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TECHNICAL MANUAL FOR
GENESYSTM 750W HALF RACK
Programmable DC Power Supplies
Document: 83-507-5002 Rev B
TDK-Lambda Americas Inc.
405 Essex Road, Neptune, NJ 07753
Tel:
(732) 922-9300
Fax: (732) 922-9334
Web: www.US.TDK-Lambda.com/HP
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TABLE OF CONTENTS
WARRANTY……………………………………………………………………………………………. Pg. 1
SAFETY INSTRUCTIONS…………………………………………………………………………….. Pg. 2
GERMAN SAFETY INSTRUCTIONS………………………………………………………………… Pg. 4
Pg. 6
CHAPTER 1 GENERAL INFORMATION…………………………………………………………...
1.1 USER MANUAL CONTENT………………………………………………………………………. Pg. 6
1.2 INTRODUCTION…………………………………………………………………………………… Pg. 6
1.2.1 General description………………………………………………………………………….. Pg. 6
1.2.2 Models covered ……………………………………………………………………………... Pg. 6
1.2.3 Features and options ……………………………………………………………………….. Pg. 6
1.2.4 Multiple output power system ……………………………………………………………… Pg. 7
1.2.5 Control via the serial communication port………………………………………………… Pg. 7
1.2.6 Analog voltage programming and monitoring……………………………………………. Pg. 7
1.2.7 Parallel operation……………………………………………………………………………. Pg. 7
1.2.8 Output connections…………………………………………………………………………. Pg. 7
1.2.9 Cooling and mechanical construction…………………………………………………….. Pg. 8
1.3 ACCESSORIES……………………………………………………………………………………. Pg. 8
1.3.1 Included Accessories……………………………………………………………………….. Pg. 8
1.3.2 Optional Communication Cables……………………...…………………………………… Pg. 8
1.3.3 AC cables ……………………………………………………………………………………. Pg. 8
Pg. 9
CHAPTER 2 SPECIFICATIONS……………………………………………………………………...
2.1 OUTPUT RATING…………………………………………………………………………………. Pg. 9
2.2 INPUT CHARACTERISTICS……………………………………………………………………... Pg. 9
2.3 CONSTANT VOLTAGE MODE…………………………………………………………………... Pg. 9
2.4 CONSTANT CURRENT MODE………………………………………………………………….. Pg. 9
2.5 ANALOG PROGRMAMING AND MONITORING………………………………………………. Pg. 9
2.6 PROGRAMMING AND READBACK…………………………………………………………….. Pg. 10
2.7 PROTECTIVE FUNCTIONS……………………………………………………………………… Pg. 10
2.8 FRONT PANEL…………………………………………………………………………………….
Pg. 10
2.9 ENVIRONMENTAL CONDITIONS………………………………………………………………. Pg. 10
2.10 MECHANICAL……………………………………………………………………………………. Pg. 10
2.11 SAFETY/EMC…………………………………………………………………………………….. Pg. 10
2.12 SUPPLEMENTAL CHARACTERISTICS………………………………………………………. Pg. 11
2.13 OUTLINE DRAWINGS…………………………………………………………………………... Pg. 12
Pg. 13
CHAPTER 3 INSTALLATION………………………………………………………………………..
3.1 GENERAL…………………………………………………………………………………………... Pg. 13
3.2 PREPARATION FOR USE………………………………………………………………………... Pg. 13
3.3 INITIAL INSPECTION……………………………………………………………………………... Pg. 13
3.4 RACK MOUNTING………………………………………………………………………………… Pg. 14
3.4.1 Single-unit installation………………………..…………………………………………….. Pg. 14
3.4.2 Dual unit installation………..………………………………………………………………. Pg. 14
3.4.3 GENH/RM Rack Mounting outline drawings.……………………………………………. Pg. 15
3.5 LOCATION MOUNTING AND COOLING………………………………………………………. Pg. 15
3.6 AC SOURCE REQUIREMENTS…………………………………………………………………. Pg. 15
3.7 AC INPUT POWER CONNECTION……………………………………………………………... Pg. 15
3.7.1 AC input connector………………….……………………………………………………… Pg. 16
3.7.2 AC input cord……………………………………………………………………………….. Pg. 16
3.8 TURN-ON CHECKOUT PROCEDURE…………………………………………………………. Pg. 16
3.8.1 General………………………………………………………………………………………. Pg. 16
3.8.2 Prior to operation……………………………………………………………………………. Pg. 16
3.8.3 Constant voltage check…………………………………………………………………….. Pg. 17
3.8.4 Constant current check…………………………………………………………………….. Pg. 17
3.8.5 OVP check…………………………………………………………………………………... Pg. 17
3.8.6 UVL check…………………………………………………………………………………… Pg. 17
3.8.7 Foldback check……………………………………………………………………………... Pg. 18
3.8.8 Address setting……………….…………………………………………………………….. Pg. 18
3.8.9 Baud rate setting……………………………………………………………………………. Pg. 18
83-507-5002 Rev. B
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TABLE OF CONTENTS
3.9 CONNECTING THE LOAD……………………………………………………………………….. Pg. 18
3.9.1 Load Wiring………………………………………………………………………………….. Pg. 18
3.9.2 Current Carrying Capacity…………………………………………………………………. Pg. 18
3.9.3 Wire termination……………………………………………………………………….……. Pg. 19
3.9.4 Noise and Impedance Effects……………………………………………………………... Pg. 20
3.9.5 Inductive loads………………………………………………………………………………. Pg. 20
3.9.6 Making the load connections………………………………………………………………. Pg. 20
3.9.7 Connecting single loads, local sensing (default)………………………………………… Pg. 23
3.9.8 Connecting single loads, remote sensing………………………………………………... Pg. 23
3.9.9 Connecting multiple loads, radial distribution method…………...……………………... Pg. 23
3.9.10 Multiple loads connection with distribution terminals………………………………….. Pg. 24
3.9.11 Grounding outputs………………………………………………………………………… Pg. 24
3.10 LOCAL AND REMOTE SENSING……………………………………………………………… Pg. 25
3.10.1 Sensing wiring……………………………………………………………………………... Pg. 25
3.10.2 Local sensing………………………………………………………………………………. Pg. 25
3.10.3 Remote sensing…………………………………………………………………………… Pg. 26
3.10.4 J2 sense connector technical information……………………………………………… Pg. 26
3.11 REPACKAGING FOR SHIPMENT……………………………………………………………… Pg. 26
Pg. 27
4.1 INTRODUCTION…………………………………………………………………………………… Pg. 27
4.2 FRONT PANEL CONTROLS AND Pg. 27
CHAPTER 4 FRONT AND REAR PANEL CONTROLS AND CONNECTORS………...………
4.3 REAR PANEL CONNECTIONS AND CONTROLS…………………………………...……….. Pg. 29
4.4 REAR PANEL SW1 SETUP SWITCH…………………………………………………………… Pg. 30
4.4.1 SW1 positions functions…………………………………………………………………… Pg. 30
4.4.2 Resetting the SW1 switch…………………………………………………………………. Pg. 31
4.5 REAR PANEL J1 PROGRAMMING AND MONITORING CONNECTOR…………………… Pg. 31
4.5.1 Making J1 connections…………………………………………………………………….. Pg. 31
Pg. 34
CHAPTER 5 LOCAL OPERATION………………………………………………………………….
5.1 INTRODUCTION………………………………………………………………….……………….. Pg. 34
5.2 STANDARD OPERATION………………………………………………………………………… Pg. 34
5.2.1 Constant Voltage Mode……………………………………………………………………. Pg. 34
5.2.2 Constant Current Operation……………………………………………………………….. Pg. 34
5.2.3 Automatic Crossover……………………………………………………………………….. Pg. 35
5.3 OVER VOLTAGE PROTECTION (OVP)………………………………………………………... Pg. 35
5.3.1 Setting the OVP level………………………………………………………………………. Pg. 35
5.3.2 Activated OVP protection indications…………………………………………………….. Pg. 35
5.3.3 Resetting the OVP circuit………………………………………………………………...... Pg. 35
5.4 UNDER VOLTAGE LIMIT (UVL)…………………………………………………………………. Pg. 36
5.4.1 Setting the UVL level……………………………………………………………………….. Pg. 36
5.5 FOLDBACK PROTECTION………………………………………………………………………. Pg. 36
5.5.1 Setting the Foldback protection……………………………………………………………. Pg. 36
5.5.2 Resetting activated Foldback protection………………………………………………….. Pg. 36
5.6 OUTPUT ON/OFF CONTROL……………………………………………………………………. Pg. 36
5.7 OUTPUT SHUT-OFF (SO) CONTROL VIA REAR PANEL J1 CONNECTOR……………… Pg. 36
5.8 ENABLE/DISABLE CONTROL VIA……………………………………………………………… Pg. 37
5.9 CV/CC SIGNAL…………………………………………………………………………………….. Pg. 37
5.10 PS OK SIGNAL…………………………………………………………………………………… Pg. 38
5.11 SAFE START AND AUTO-RESTART MODES……………………………………………….. Pg. 38
5.11.1 Automatic start mode……………………………………………………………………… Pg. 38
5.11.2 Safe start mode…………………………………………………………………………….. Pg. 38
5.12 OVER TEMPERATURE PROTECTION (OTP)……………………………………………….. Pg. 38
5.13 LAST SETTING MEMORY……………………………………………………………………… Pg. 38
5.14 SERIES OPERATION……………………………………………………………………………. Pg. 39
5.14.1 Series connection for increased output voltage………………………………………… Pg. 39
5.14.2 Series connection for positive and negative output voltage…………………………… Pg. 40
83-507-5002 Rev. B
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TABLE OF CONTENTS
5.15 PARALLEL OPERATION………………………………………………………….………….…. Pg. 41
5.15.1 Basic parallel operation……………………………………………………………………. Pg. 41
5.15.2 Advanced parallel operation………………………………………………………………. Pg. 42
5.16 DAISY-CHAIN SHUT-OFF CONNECTION……………………………………………………. Pg. 44
5.17 FRONT PANEL LOCKING………………………………………………………………………. Pg. 44
5.17.1 Unlocked front panel………………………………………………………………………. Pg. 45
5.17.2 Locked front panel…………………………………………………………………………. Pg. 45
Pg. 46
CHAPTER 6 REMOTE ANALOG PROGRAMMING………………………………………………
6.1 INTRODUCTION…………………………………………………………………………………… Pg. 46
6.2 LOCAL/REMOTE ANALOG CONTROL………………………………………………………… Pg. 46
6.3 LOCAL/REMOTE ANALOG INDICATION………………………………………………………. Pg. 46
6.4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT LIMIT
Pg. 47
6.5 RESISTIVE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT………………….. Pg. 48
6.6 REMOTE MONITORING OF OUTPUT VOLTAGE AND CURRENT………………………... Pg. 49
Pg. 50
CHAPTER 7 RS232 & RS485 REMOTE CONTROL……………………………………………...
7.1 INTRODUCTION…………………………………………………………………………………… Pg. 50
7.2 CONFIGURATION…………………………………………………………………………………. Pg. 50
7.2.1 Default setting………………………………………………………………………………... Pg. 50
7.2.2 Address setting………………………………………………………………………………. Pg. 50
7.2.3 RS232 or RS485 selection…………………………………………………………………. Pg. 50
7.2.4 Baud rate setting…………………………………………………………………………….. Pg. 50
7.2.5 Setting the unit into Remote or Local mode………………………………………………. Pg. 50
7.2.6 RS232/458 port at Local mode…………………………………………………………….. Pg. 51
7.2.7 Front panel in Remote mode………………………………………………………………. Pg. 51
7.3 REAR PANEL RS232/485 CONNECTOR………………………………………………………. Pg. 51
7.4 MD MODE OPTION (Factory Installed)…………………………………………………………. Pg. 52
7.4.1 MD Mode Description……………………………………………………………………….. Pg. 52
7.4.2 MD Mode enable - Serial communication mode…………………………………………. Pg. 52
7.4.3 MD Mode SRQ………………………………………………………………………………. Pg. 52
7.4.4 Communication Collisions………………………………………………………………….. Pg. 52
7.4.5 MD Mode SRQ Retransmission…………………………………………………………… Pg. 52
7.5 CONNECTING POWER SUPPLIES TO RS232 OR RS485 BUS……………………………. Pg. 53
7.5.1 Single power supply…………………………………………………………………………. Pg. 53
7.5.2 Multi power supply connection to RS232 or RS485 BUS……………………………….. Pg. 54
7.6 COMMUNICATION INTERFACE PROTOCOL………………………………………………… Pg. 54
7.6.1 Data format…………………………………………………………………………………... Pg. 54
7.6.2 Addressing…………………………………………………………………………………… Pg. 54
7.6.3 End of message……………………………………………………………………………..
Pg. 54
7.6.4 Command repeat……………………………………………………………………………. Pg. 54
7.6.5 Checksum……………………………………………………………………………………. Pg. 54
7.6.6 Acknowledge…………………………………………………………………………………. Pg. 54
7.6.7 Error message……………………………………………………………………………….. Pg. 55
7.6.8 Backspace……………………………………………………………………………………. Pg. 55
7.7 ERROR MESSAGES……………………………………………………………………………… Pg. 55
7.8 COMMAND SET DESCRIPTION………………………………………………………………… Pg. 55
7.8.1 General guide.…………………………………………………………………………….…. Pg. 55
7.8.2 Command set categories…………………………………………………………………… Pg. 55
7.8.3 Initialization control commands…………………………………………………………….. Pg. 56
7.8.4 ID control commands……………………………………………………………………….. Pg. 56
7.8.5 Output control commands………………………………………………………………….. Pg. 56
7.9 GLOBAL OUTPUT COMMANDS………………………………………………………………… Pg. 58
7.9.1 General……………………………………………………………………………………….. Pg. 58
7.10 SINGLE BYTE COMMANDS……………………………………………………………………. Pg. 59
7.10.1 General……………………………………………………………………………………… Pg. 59
7.10.2 Global commands without response…………………………………………………….. Pg. 59
7.10.3 Global commands with response………………………………………………………… Pg. 60
83-507-5002 Rev. B
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TABLE OF CONTENTS
7.10.4 Addressed commands with response…………………………………………………… Pg. 60
7.10.5 Addressed commands without response……………………………………………….. Pg. 61
7.10.6 Status Control Commands……………………………………………………………….. Pg. 63
7.11 STATUS, ERROR AND SRQ REGISTERS……………………………………………….….. Pg. 63
7.11.1 General Description………………………………………………………………….……. Pg. 63
7.11.2 Conditional registers………………………………………………………………….…… Pg. 64
7.11.3 Service Request Enabled and Event Registers………………………………….…….. Pg. 65
7.12 SERIAL COMMUNICATION TEST SET-UP…………………………………………….……. Pg. 68
Pg. 69
CHAPTER 8 ISOLATED ANALOG PROGAMMING OPTION……………………………..…….
8.1 INTRODUCTION…………………………………………………………………………………… Pg. 69
8.2 SPECIFICATIONS…………………………………………………………………………………. Pg. 69
8.2.1 0-5V/0-10V option (PN:IS510)………………………………………………………...…… Pg. 69
8.2.2 4-20mA option (PN: IS420)………………………………………………………….…….. Pg. 69
8.3 ISOLATED PROGRAMMING & MONITORING CONNECTOR……………………………… Pg. 70
8.4 SETUP AND OPERATING INSTRUCTIONS…………………………………………………… Pg. 71
8.4.1 Setting up the power supply for 0-5V/0-10V Isolated Programming and Monitoring… Pg. 71
8.4.2 Setting up the power supply for 4-20mA Isolated Programming and Monitoring…….. Pg. 71
Pg. 72
CHAPTER 9 MAINTENANCE………………………………………………………………………...
9.1 INTRODUCTION…………………………………………………………………………………… Pg. 72
9.2 UNITS UNDER WARRANTY……………………………………………………………………... Pg. 72
9.3 PERIODIC MAINTENANCE………………………………………………………………………. Pg. 72
9.4 ADJUSTMENT AND CALIBRATION…………………………………………………………….. Pg. 72
9.5 PARTS REPLACEMENT AND REPAIRS……………………………………………………….. Pg. 72
9.6 TROUBLESHOOTING…………………………………………………………………………….. Pg. 72
9.7 FUSE RATING……………………………………………………………………………………... Pg. 74
83-507-5002 Rev. B
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WARRANTY
This TDK-Lambda Americas Inc. product is warranted against defects in materials and workmanship for
a period of five years from date of shipment. During the warranty period, TDK-Lambda Americas Inc.
will, at it’s option, either repair or replace products which prove to be defective.
LIMITATION OF WARRANTY
The warranty shall not apply to defects resulting from improper or inadequate usage or maintenance by
the buyer, buyer supplied products or interfacing. The warranty shall not apply to defects resulting from
unauthorized modifications, or from operation exceeding the environmental specifications of the
product, or if the QA seal has been removed or altered by anyone other than TDK-Lambda Americas
Inc. authorized personnel. TDK-Lambda Americas Inc. does not warrant the buyer’s circuitry or
malfunctions of TDK-Lambda Americas Inc. products resulting from the buyer’s circuitry. Furthermore,
TDK-Lambda Americas Inc. does not warrant any damage occurring as a result of the buyer’s circuitry
or the buyer’s - supplied products. THIS LIMITED WARRANTY IS IN LIEU OF, AND TDK-LAMBDA
AMERICAS INC DISCLAIMS AND EXCLUDES, ALL OTHER WARRANTIES, STATUTORY, EXPRESS
OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE, OR OF CONFORMITY TO MODELS OR SAMPLES.
WARRANTY SERVICE
This product must be returned to an authorized TDK-Lambda Americas Inc. service facility for repairs or
other warranty service. For products returned to TDK-Lambda Americas Inc. for warranty service, the
buyer shall prepay shipping charges to TDK-Lambda Americas Inc. If the unit is covered under the
foregoing warranty then TDK-Lambda Americas Inc. shall pay the shipping charges to return the
product to the buyer. Refer to Section 3.11 for repackaging for shipment.
DISCLAIMER
The information contained in this document is subject to change without notice. TDK-Lambda Americas
Inc. shall not be liable for errors contained in this document or for incidental or consequential damages
in connection with the furnishing, performance or use of this material. No part of this document may be
photocopied, reproduced or translated into another language without the prior written consent of TDK-
Lambda Americas Inc.
TRADEMARK INFORMATION
Genesys™ power supply is a trademark of TDK-Lambda Americas Inc.
Microsoft™ and Windows™ are trademarks of Microsoft Corporation.
THE FCC WANTS YOU TO KNOW
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which case
the user will be required to correct the interference at his own expense.
FCC WARNING
Modifications not expressly approved by manufacturer could void the user authority to operate the
equipment under FCC Rules.
1
83-000-016 Rev. F
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SAFETY INSTRUCTIONS
CAUTION
The following safety precautions must be observed during all phases of operation, service and repair of
this equipment. Failure to comply with the safety precautions or warnings in this document violates
safety standards of design, manufacture and intended use of this equipment and may impair the built-
in protections within.
TDK-Lambda Americas Inc. shall not be liable for user’s failure to comply with these requirements.
INSTALLATION CATEGORY
The GenesysTM power supply series has been evaluated to INSTALLATION CATEGORY II. Installation
category (over voltage category) II: local level, appliances, portable equipment etc. With smaller tran-
sient over voltage than Installation Category (over voltage category) III.
GROUNDING
This product is a Safety Class 1 instrument. To minimize shock hazard, the instrument chassis must be
connected to an electrical ground. The instrument must be connected to the AC power supply mains
through a three conductor power cable, with the ground wire firmly connected to an electrical ground
(safety ground) at the power outlet.
For instruments designed to be hard-wired to the supply mains, the protective earth terminal must be
connected to the safety electrical ground before another connection is made. Any interruption of the
protective ground conductor or disconnection of the protective earth terminal will cause a potential
shock hazard that might cause personal injury.
WARNING
OUTPUT TERMINALS GROUNDING
There is a potential shock hazard at the RS232/RS485 and the IEEE ports when using power supplies
with rated or combined voltage greater than 400V and the Positive Output of the Power Supply is
grounded. Do Not connect the Positive Output to ground when using the RS232/RS485 or IEEE.
FUSES
Fuses must be changed by authorized TDK-Lambda Americas Inc. service personnel only. For contin-
ued protection against risk of fire, replace only with the same type and rating of fuse. Refer to Chapter
9 for fuse ratings.
INPUT RATINGS
Do not use AC supply, which exceeds the input voltage and frequency rating of this instrument. The
input voltage and frequency rating of the GenesysTM power supply series is: 100-240Vi, 50/60Hz. For
safety reasons, the mains supply voltage fluctuations should not exceed +/-10% of nominal voltage.
LIVE CIRCUITS
Operating personnel must not remove the instrument cover. No internal adjustment or component re-
placement is allowed by non-TDK-Lambda Americas Inc. qualified personnel. Never replace compo-
nents with power cable connected. To avoid injuries, always disconnect power, discharge circuits and
remove external voltage source before touching components.
PARTS SUBSTITUTIONS & MODIFICATIONS
Parts substitutions and modifications are allowed by authorized TDK-Lambda Americas Inc. service
personnel only. For repairs or modifications, the instrument must be returned to an authorized TDK-
Lambda Americas Inc. service facility.
2
83-507-5002 Rev. B
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SAFETY INSTRUCTIONS
ENVIRONMENTAL CONDITIONS
The GenesysTM power supply series safety approval applies to the following operating conditions:
*Indoor use
*Ambient temperature: 0°C to 50°C
*Altitude: up to 3000m
*Maximum relative humidity: 90% (no condensation)
*Pollution degree 2
CAUTION Risk of Electrical Shock
Instruction manual symbol. The instrument will be marked with this symbol when it is
necessary for the user to refer to the instruction manual.
Indicates hazardous voltage.
Indicates ground terminal.
Protective Ground Conductor Terminal
Off (Supply)
On (Supply)
The WARNING sign denotes a hazard. An attention to a procedure is called. Not fol-
lowing procedure correctly could result in personal injury.
A WARNING sign should not be skipped and all indicated conditions must be
fully understood and met.
The CAUTION sign denotes a hazard. An attention to a procedure is called. Not follow-
ing procedure correctly could result in damage to the equipment. Do not proceed be-
yond a CAUTION sign until all indicated conditions are fully understood and met.
FCC COMPLIANCE NOTICE:
Note: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to pro-
vide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates electro-magnetic field, and can
radiate radio frequency energy and, if not installed and used in accordance with the in-
struction manual, may cause harmful interference to radio communications. Operation
of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own expense.
3
83-507-5002 Rev. B
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SICHERHEITS-INSTALLATIONS ANWEISUNGEN
Vorsicht
Vor Anschluss an das Netz ist die Aufstellanleitung wie nachstehend beschrieben zu beachten. Die
nachstehenden Sicherheitsanweisugen mussen während aller Phasen des Betriebes, des Services
und der Reparatur dieser Ausrustung beachtet werden. Alle notwendigen Bedingungen die
sicherstellen, dass die Einrichtung zu keiner Gefahr im Sinne dieser Norm führen kann, sind in diesem
Handbuch beschrieben.
TDK-Lambda Americas Inc. ist nich verantwortlich fur Fehler, die bei der Inbetriebnahme des Gerates
auf Grundlage dieser Sicherheitsanweisungen durch den Betreiber entstehen können.
Betriebsbedingungen
Die GenesysTM Stromversorgungs-Reihe ist zur installation gemass Uberspannungs-Kategorie 2
entwickelt worden.
Installatios Kategorie (Uberspannungs-Kategories) 2 bedeutet: Kleinindustrie, Geräte, bewegliche
Ausrustung etc.. mit Uberspannungen kleiner als Installation Kategorie 3.
Erdungskonzept
Dieses Produkt ist ein Gerat mit Schutzklasse1. Damit gefahrliche Energieinhalte und Spannungen
vermieden werden, ist das Geratechassis an eine Schutzerde anzuschliessen. Das Gerat muss an die
AC-Wechselspannungsversorgung mit 3 Leitern (L, N, PE) angeschlossen werden. Der
PE-
Anschluss ist an einen festen Erder anzuschliessen. Bei Festverdrahtung des Gerates ist
sicherzustellen, dass der PE Anschluss als erstes durchgefuhrt wird.
Jede mogliche Unterbrechung des PE-Leiters oder Trennung der PE Masses kann einen moglichen
elektrischen Schlag hervorrufen, der Personenschaden zur Folge hatte.
Vorsicht
Erdung des DC-Ausgangs
Es besteht Energiegefahr am RS232/RS485 und IEEE Anschluss, falls die Ausgangsspannung des
Gerates grosser ist als 400V und der positive Ausgangsanschluss des Netzteiles geerdet wird. Dies gilt
insbesondere auch bei Reihenschaltungen von unterschiedlichen Netzteilen. Wird die RS232/485 oder
IEEE Schnittstelle verwendet, ist darauf zu achten, dass der Plus-Ausgangsanschluss nicht geerdet
wird.
Absicherung
Sicherungen durfen nur durch autorisierte TDK-Lambda Americas Inc. Service Personen ausgetauscht
werden. Um Brandgefahr vorzubeugen, sind nur Sicherungen zu verwenden mit gleicher Bauart und
Auslosecharakteristik. Siehe hierzu Wartungsanweisungen in Kapitel 6 bezuglich Sicherungen.
Anschluss an Versorgungsstromkreis
Der Betrieb des Gerates ist nur fur den dafur spezifizierten Wechselspannungsbereich und der
angegebenen Frequenz erlaubt.
Der Nominaleingangsspannungsbereich der GenesysTM Serie liegt bei 100-240VAC mit 50/60Hz. Fur
einen sicheren Betrieb des Gerates ist eine Abweichung von max. +/-10% der Nominalspannung
erlaubt.
Spannungsfuhrende Teile
Die Gerateabdeckung darf nur im stromlosen Zustand geoffnet werden. Interne Modifikationen, sowie
Bauteileaustausch ist nur durch TDK-Lambda Americas Inc. qualifiziertes Personal erlaubt. Vor
Austausch von Bauteilen ist das Netzkabel bzw. Die Versorgungsspannung zu trennen.
Energieversorgungsanschlusse sind immer zu trennen um Personenverletzungen durch gefahrliche
Energieinhalte und Spannungen auszuschliessen. Die Stromkreise sind zu entladen, extreme
Spannunsquellen sind zu entfernen bevor Bauteile bzw. Komponenten getauscht werden.
4
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Anderungen and Bauteileersatz
Ersatzteilaustausch – und Anderungen durfen nur von autorisiertem TDK-Lambda Americas Inc.
SERVICE-PERSONEN durchgefuhrt werden. Fur Reparaturen oder Anderungen ist das
Gerat zur TDK-Lambda Americas Inc. Service-Niederlassung zu retournieren.
SICHERHEITS-HINWEISE
Umweltbedingungen
Die GenesysTM Stromversorgungs-Serie ist gemassden Sicherheitsabnahmen fur folgende
Betriebsbedingungen zugelassen.
*Stationare Einrichtungen in Gebauden.
*Umgebungstemperaturebereich: 0-50°C.
*Maximale Relative Luftfeuchtigkeit: 90% (nicht kondensierend).
*Betriebshohe: bis zu 3000m.
*Verschmutzungsgrad 2.
Sicherheits-und Warnsymbole
VORSICHT Spannungsfuhrende Teile-Gefahr durch elektrischen Schlag bzw.
Energieinhalte
Handbuch-Symbol. Das Gerat bzw. Gerateteile werden mit diesem Symbol
gekennzeichnet, wenn es fur den Benutzer notwendig ist, sich auf die Anweisungen im
Handbuch zu beziehen.
Zeigt „spannungsfuhrende Teile“ mit gefahrlicher Spannung an.
Zeigt Masse-Anschluss an, keine Schutzerde. (z.B. Masseanschlussan einenVerbraucher).
Schutzleiter-Anschlussklemme.
Symbol fur Schalter oder Drucknopfe - Zeigt die "Ein" - Stellung hier an.
Symbol fur Schalter oder Drucknopfe - Zeigt die "Aus" - Stellung hier an.
Dieses Warnaufschrift weist auf eine Gefahr hin, die eine Uberprufunganweisung nach sich
ziecht. Nichteinhaltung kann zu Personenschaden fuhren. Dieser Warnhinweis darf nicht
ubersprungen werden und die beschriebene Vorgehensweise musstrikt verstanden werden
und dementsprechend umgesetzt werden.
Diese „Vorsichtswarnung“ weist auf eine Gefahr hin, die einer Vorkehrung bedarf.
Nichteinhaltung kann zur Zerstorung der Anlage oder des Gerates fuhren. Bitte
berucksichtigen Sie alle Anweisungen, die dort beschreiben sind, bevor Sie mit Benutzung
der Anlage bzw. des Gerates fortfahren.
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CHAPTER 1 GENERAL INFORMATION
1.1 USER MANUAL CONTENT
This User’s Manual contains the operating instructions, installation instructions and specifications
of the GenesysTM GENH 750W power supply series. The instructions refer to the standard power
supplies, including the built-in RS232/RS485 serial communication. For information related to
operation with the optional IEEE programming, refer to User’s Manual for Power Supply IEEE
Programming Interface. (TDK-Lambda Americas Inc. P/N 83-030-200).
1.2 INTRODUCTION
1.2.1 General Description
GenesysTM power supplies are wide output range, high performance switching power supplies.
The GenesysTM series is power factor corrected and operates from worldwide AC voltage range
continuously. Output Voltage and Current are continuously displayed and LED indicators show
the complete operating status of the power supply. The Front panel controls allow the user to set
the output parameters, the protections levels (Over-Voltage protection, Under-Voltage limit and
Foldback) and preview the settings. The rear panel includes the necessary connectors to control
and monitor the power supply operation by remote analog signals or by the built-in serial com-
munication (RS232/RS485). GPIB programming and Isolated-Analog programming/monitoring
are optional.
1.2.2 Models covered by this Manual
Model
Voltage
Current
Model
Voltage
Current
range (V) range (A)
range (V) range (A)
GENH 6 - 100
GENH 8 - 90
GENH 12.5 - 60 0 - 12.5
GENH 20 - 38
GENH 30 - 25
GENH 40 - 19
0 - 6
0 - 8
0 - 100
0 - 90
0 - 60
0 - 38
0 - 25
0 - 19
GENH 60 - 12.5 0 - 60
GENH 80 - 9.5 0 - 80
GENH 100 - 7.5 0 - 100
GENH 150 - 5 0 - 150
GENH 300 - 2.5 0 - 300
GENH 600 - 1.3 0 - 600
0 - 12.5
0 - 9.5
0 - 7.5
0 - 5
0 - 2.5
0 - 1.3
0 - 20
0 - 30
0 - 40
Table 1-1: Models covered by the Manual
1.2.3 Features and options
∗ Constant Voltage / Constant Current with automatic crossover.
∗ Active power factor correction.
∗ Universal Input Voltage (85i265Vac), continuous operation.
∗ Embedded Microprocessor Controller.
∗ Built-in RS-232/RS-485 Interface.
∗ Voltage & Current high resolution adjustment by digital encoders.
∗ High accuracy programming/readback.
∗ Software Calibration (no internal trimmers / potentiometers).
∗ Last Setting Memory.
∗ Independent Remote ON/OFF (opto-isolated) and remote Enable/Disable.
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∗ Parallel operation (Master/Slave) with Active current sharing.
∗ Remote sensing to compensate for voltage drop of power leads.
∗ External Analog Programming and Monitoring standard (0-5V or 0-10V, user selectable).
∗ Cooling fan speed control for low noise and extended fan life.
∗ Zero stacking-no ventilation holes at the top and bottom surface of the power supply.
∗ Optional GPIB interface (SCPI compatible).
∗ Optional Isolated Analog programming/monitoring (0-5V or 0-10V, user selectable and 4-
20mA).
1.2.4 Multiple output power system
The GenesysTM power supplies series can be configured into a programmable power system of
up to 31 units using the built-in RS232/RS485 communication port and the RS485 linking cable
provided with each power supply.
In a GPIB system, each power supply can be controlled using the optional GPIB controller (fac-
tory installed).
1.2.5 Control via the serial communication port
The following parameters can be programmed / monitored via the serial communication port:
1. Output Voltage setting.
2. Output Current setting.
3. Output Voltage measurement.
4. Output On/Off control.
5. Output Current measurement.
6. Foldback protection setting
7. Over-voltage protection setting and readback.
8. Under-Voltage limit setting and readback.
9. Power-supply start up mode (Auto-restart or Safe-start mode).
1.2.6 Analog voltage programming and monitoring
Analog inputs and outputs are provided at the rear panel for analog control of the power supply.
The Output Voltage and the Current can be programmed by analog voltage or by resistor, and
can be monitored by analog voltage. The power supply output can be remotely set to On or Off
and analog signals monitor the proper operation of the power supply and the mode of operation
(CV/CC).
1.2.7 Parallel operation
GenesysTM power supplies of the same Output Voltage and Current rating can be paralleled in a
master-slave configuration with automatic current sharing to increase power available.
1.2.8 Output connections
Output connections are made to rear panel bus-bars for models up to 60V and to a 4-terminal
wire clamp connector for models above 60V rated output voltage. Either the positive or negative
terminal may be grounded or the output may be floated. Models up to 60VDC Rated Output shall
not float outputs more than +/- 60VDC above/below chassis ground. Models >60VDC Rated Out-
put shall not float outputs more than +/-600VDC above/below chassis ground. Contact factory for
assistance with higher float voltage applications.
Local or remote sense may be used. In remote sense, the voltage drop on the load wires should
be minimized. Refer to the specifications for the maximum voltage drop value.
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1.2.9 Cooling and mechanical construction
The GenesysTM series is cooled by internal fans. At the installation, care must be taken to allow
free airflow into the power supply via the front panel and out of the power supply via the rear
panel. The GenesysTM power supplies have a compact and lightweight package, which allows
easy installation and space saving in the application equipment.
CAUTION
Observe all torque guidelines within this manual. Applying more torque may
damage unit or accessories. Such damage is not covered under manufacturers
warranty.
1.3 ACCESSORIES
1.3.1 Included Accessories
The following accessories are delivered with the power supply:
1.3.1.1 Serial Link Cable
Serial link cable for linking power supplies by RS-485 communication.GEN/RJ45.
Cable description: 0.5m Length, shielded, RJ-45 type plugs, eight (8) contacts (P/N 15-507-201)
1.3.1.2 Hardware (delivered with power supply)
•
•
•
•
•
Strain Relief for AC Cord
Output terminal Shield
DB25 Programming Plug kit (AMP 749809-9)
Plastic legs for bench mounting.
Power Cord - See Para 1.3.3.
1.3.2 Optional Communication Cables (See Para. 7.5)
•
RS-232 Cables to connect GEN to Serial Port on PC
GEN to PC (DB9)
GEN to PC (DB25)
GEN 232/9
GEN 232/25
P/N 15-507-203
P/N 15-507-204
•
RS-485 Cable to connect GEN to Serial Port on PC
GEN to PC (DB9) GEN/485-9
P/N 15-507-202)
1.3.3 AC cables
AC Cables are provided with 750W Model only, according to suffix in Model Number.
Part No. Market
Description
NC301
(GEN/U)
USA
13A 125V, unshielded, 2m typical length, with IEC320 connector on one end
and NEMA-5-15P connector on the other end.
NC302
(GEN/E)
Europe
General
10A 250V, unshielded, 2m typical length, with IEC320 connector on one end
and INT’L 7 standard VII, dual earthing.
NC303
(GEN/O)
10A 250V, unshielded, 2m typical length, with IEC320 connector on one end
and unterminated stripped wires on the other end. Use the cable only with
plug approved by the national safety standards of the country of usage.
NC305
(GEN/J)
Japan
UK
13A 125V,unshielded, 2m typical length, with IEC320 connector on one end
and Japan type plug on the other end.
NC306
(GEN/GB)
10A 250V unshielded, 2m typical length, with IEC320 connector on one end
and UK type plug on the other end.
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CHAPTER 2 SPECIFICATIONS
2.1 OUTPUT RATING
MODEL
GEN
V
A
6-100
6
100
8-90
8
90
12.5-60
12.5
60
20-38
20
38
30-25
30
25
40-19
40
19
–
–
–
60-12.5
60
12.5
80-9.5
80
8.5
100-7.5
100
7.5
150-5
150
5
300-2.5
300
2.5
600-1.3
600
1.3
1.Rated output voltage (*1)
2.Rated output current 750W (*2)
0.01% of rated output voltage +2mV
0.05% of rated Vout over 8hrs interval following 30 minutes warm-up. Constant line, load & temp.
7. Rem. Sense compensation/wire
8. Up-prog. Response time 0~Vomax (*9)
9. Down-prog. Response time: Full load
V
mS
mS
1
1
1
1
1.5
2
2
3
4
5
5
5
5
80
150
150
250
250
4000
10
500
50
700
80
No load
600
800
900
1000
1100
1100
1200
1500
2000
2500
10. Transient response time
mS
Time for the output voltage to recover within 0.5% of its rated output for a load change 10~90% of rated
output current.
Output set-point: 10~100%.
Less than 1mS for models up to and including 100V; 2mS for models above 100V.
11. Hold-up time
mS
More than 20mS, 100Vac, rated output power.
2.4 CONSTANT CURRENT MODE
1. Max.line regulation (*5)
V
–
6
8
12.5
20
30
40
50
60
80
100
150
300
600
2. Max.load regulation (*7)
–
3. Ripple r.m.s. 5Hz~1MHz.750W (*8)
mA
200
180
120
76
63
48
–
38
29
23
18
13
8
–
–
Possible, up to 4 units in master/slave mode with single wire current balance connection.
Possible (with external diodes), up to 2 units.
13. Local/Remote analog control
CV: TTL high (4~5V), source current: 10mA, CC: TTL low (0-0.6V). Sink current: 10mA .
Dry contact. Open: off, Short: on. Max. voltage at Enable/Disable in: 6V.
By electrical signal or Open/Short: 0~0.6V or short: Remote, 4~5V or open: Local.
Open collector. Local: Open, Remote: On. Maximum voltage: 30V, maximum sink current: 5mA.
14. Local/remote analog indicator
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2.6 PROGRAMMING AND READBACK (RS232/485, Optional IEEE Interface)
1. Vout programming accuracy
–
0.05% + 0.05% of rated output voltage.
3. Vout programming resolution.
6. Iout readback accuracy (*13)
–
–
0.012% of full scale.
0.1% + 0.3% of rated output current
2. Over-voltage protection
Inverter shut-down; manual reset by AC input recycle, OUT button.
output voltage is below limit.
User selectable, latched or non latched.
2.8 FRONT PANEL
1. Control functions
–
–
–
–
–
Vout/Iout manual adjust by separate encoders. (Coarse and fine adjustment)
Go to local control
Front panel lock
Baud rate selection: 1200, 2400, 4800, 9600 and 19200
Iout:
4 digits, accuracy: 0.5% of rated current + 1 count
2.9 ENVIRONMENTAL CONDITIONS
3. Operating humidity
4. Storage humidity
0~50 C, 100% load.
%
%
30~90% RH (no condensation).
10~95% RH (no condensation).
2. Weight
5. Shock
Less than 4.5Kg
Less than 20G, half sine, 11mS. Units unpacked
Kg
–
1. Applicable standards
Safety
EMC
–
UL60950-1 listed, EN60950-1 Vout ≤ 40V: Output is SELV, IEEE/Isolated Analog are SELV.
EN55024
Vout < 60V models: Input-Outputs (SELV): 3.0KVrms 1 min, Input-Ground: 2.0KVrms 1 min.
Hazardous Output - SELV: 1.9KVrms 1 min, Hazardous Output-Ground: 1.9KVrms 1 min.
Input-Ground: 2KVrms 1min
–
5. Radiated emission
–
EN55022A, FCC part 15-A, VCCI-A
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NOTES:
*1: Minimum voltage is guaranteed to maximum 0.2% of the rated output voltage.
*2: Minimum current is guaranteed to maximum 0.4% of the rated output current.
*3: For cases where conformance to various safety standards (UL, IEC etc.) is required, to be
described as 100-240Vac (50/60Hz).
*4: At 100/200V input voltage and maximum output power.
*5: From 85i132Vac or 170i265Vac, constant load.
*6: From No-load to Full-load, constant input voltage. Measured at the sensing point in Remote
Sense.
*7: For load voltage change, equal to the unit voltage rating, constant input voltage.
*8: For 6V models the ripple is measured at 2i6V output voltage and full output current. For other
models, the ripple is measured at 10i100% output voltage and full output current.
*9: With rated, resistive load.
*10. For 6i300V models: Measured with JEITA RC-9131A (1:1) probe
For 600V model: Measured with (10:1) probe.
2.12 SUPPLEMENTAL CHARACTERISTICS
The supplemental characteristics give typical but non-warranted performance characteristics.
The supplemental characteristics are useful in assessing applications for the power supply. Sev-
eral kinds of supplemental characteristics are listed below.
1. Evaluation Data: Typical performance of the power supply.
2. Reliability Data: Reliability Performance of the power supply.
3. IEC1000 Data: Performance of the power supply under IEC1000 test conditions.
4. EMI Data: Typical EMI (conducted and radiated) performance of the power supply.
The supplemental characteristics data is held in each TDK-Lambda Americas Inc. sales and ser-
vice facility. For further details please contact the TDK-Lambda Americas Inc. office nearest you.
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2.13 GENESYSTM GENH 750W POWER SUPPLIES OUTLINE DRAWINGS
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CHAPTER 3 INSTALLATION
3.1 GENERAL
This Chapter contains instructions for initial inspection, preparation for use and repackaging for
shipment. Connection to PC, setting the communication port and linking GenesysTM power sup-
plies are described in Chapter 7.
NOTE
GenesysTM power supplies generate magnetic fields, which
might affect the operation of other instruments. If your
equipment is susceptible to magnetic fields, do not position it
adjacent to the power supply.
3.2 PREPARATION FOR USE
In order to be operational, the power supply must be connected to an appropriate AC source.
The AC source voltage should be within the power supply specification. Do not apply power be-
fore reading Section 3.6 and 3.7.
Table 3-1 below, describes the basic setup procedure. Follow the instructions in Table 3-1 in the
sequence given to prepare the power supply for use.
Step no.
Item
Inspection
Installation
Description
Reference
Section 3.3
1
2
Initial physical inspection of the power supply
Installing the power supply,
Ensuring adequate ventilation.
Section 3.4
Section 3.5
AC source requirements
Connecting the power supply to the AC source
3
AC source
Test
Section 3.6
Section 3.7
4
5
Turn-on checkout procedure.
Section 3.8
Section 3.9
Load connection Wire size selection. Local/Remote sensing.
Single or multiple loads.
6
Default setting
The power supply setting at shipment.
Section 7.2.1
Table 3-1: Basic setup procedure
3.3 INITIAL INSPECTIONS
Prior to shipment this power supply was inspected and found free of mechanical or electrical de-
fects. Upon unpacking of the power supply, inspect for any damage, which may have occurred in
transit.
The inspection should confirm that there is no exterior damage to the power supply such as bro-
ken knobs or connectors and that the front panel and meters face are not scratched or cracked.
Keep all packing material until the inspection has been completed. If damage is detected, file a
claim with carrier immediately and notify the TDK-Lambda Americas Inc. sales or authorized ser-
vice facility nearest you.
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3.4 RACK MOUNTING
To install a GENH750W one unit or two units side-by-side in a standard 19” Rack in 1U (1.75”)
height, use option kit P/N: GENH/RM
The Rack Mount kit allows the units to be zero stacked for maximum system flexibility and power
density without increasing the 1U height of the units.
3.4.1 Single unit installation
To install a GENH750W power supply in a standard 19” Rack in 1U (1.75”) height, using a GENH
Rack Mount kit P/N: GENH/RM.
Fig. 3-1 Single unit installation
3.4.2 Dual unit installation
To install two GENH750W power supplies side-by-side in a standard 19” Rack in 1U (1.75”)
height, using a GENH Rack Mount kit P/N: GENH/RM.
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3.4.3 GENH/RM Rack Mounting outline drawings:
3.5 LOCATION, MOUNTING AND COOLING
This power supply is fan cooled. The air intake is at the front panel and the exhaust is at the rear
panel. Upon installation allow cooling air to each the front panel ventilation inlets. Allow minimum
10cm (4-inch) of unrestricted air space at the front and the rear of the unit.
The power supply should be used in an area that the ambient temperature does not exceed
+50°C.
3.6 AC SOURCE REQUIREMENTS
The GenesysTM series can be operated from a nominal 100V to 240V, single phase, 47i63 Hz.
The input voltage range and current required for each model is specified in Chapter 2. Ensure
that under heavy load, the AC voltage supplied to the power supply does not fall below the speci-
fications described in Chapter 2.
3.7 AC INPUT POWER CONNECTION
CAUTION
Connection of this power supply to an AC power source
should be made by an electrician or other qualified personnel
WARNING
There is a potential shock hazard if the power supply chassis
(with cover in place) is not connected to an electrical safety
ground via the safety ground in the AC input connector.
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WARNING
Some components inside the power supply area are at AC voltage
even when the On/Off switch is in the “Off” position. To avoid electric
shock hazard, disconnect the line cord and load and wait two minutes
before removing cover.
3.7.1 AC Input Connector
An IEC connector is provided on the rear panel for connecting the unit to the AC power source
with an AC cord. The IEC connector also provides the safety ground connection while the AC
cord is plugged into an appropriate AC receptacle.
3.7.2 AC Input Cord
Refer to Section 1.3.4 for details of the AC input cords recommended for the GENH750W mod-
els.
WARNING
The AC input cord is the disconnect device of the power
supply. The plug must be readily identifiable and accessible
3.8 TURN-ON CHECKOUT PROCEDURE
3.8.1 General
The following procedure ensures that the power supply is operational and may be used as a ba-
sic incoming inspection check. Refer to Fig.4-1 and Fig.4-2 for the location of the controls indi-
cated in the procedure.
3.8.2 Prior to Operation
1. Ensure that the power supply is configured to the default setting:
–
–
–
AC On/Off switch at Off position.
Dip switch: All positions at Down (“Off”) position.
Sense connector: Configured to Local Sense as shown in Fig.3-4:
1 Remote (+) sense
2 Local (+) sense
3 Not connected
4 Local (-) sense
5 Remote (-) sense
Fig.3-4: Sense connector default connection
–
For units equipped with IEEE option, ensure that the IEEE_En switch is in Up (default)
position (Refer to Fig.4-2, Item 9 for location), if checkout is to be done in IEEE mode.
2. Connect the unit to an AC source as described in Section 3.7.
3. Connect a DVM with appropriate cables for the rated voltage to the output terminals.
4. Turn the front panel AC power switch to On.
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3.8.3 Constant Voltage Check
1. Turn on the output by pressing the OUT pushbutton so the OUT LED illuminates.
2. Observe the power supply VOLT display and rotate the Voltage encoder. Ensure that the
Output Voltage varies while the VOLT encoder is rotated. The minimum control range is from
zero to the maximum rated output for the power supply model.
Compare the DVM reading with the front panel VOLT display to verify the accuracy of the
VOLT display. Ensure that the front panel VOLT LED is On.
3. Turn Off the front panel AC power switch.
3.8.4 Constant Current Check
1. Ensure that the front panel AC power switch is at the Off position and the DVM connected to
the output terminals shows zero voltage.
2. Connect a DC shunt across the output terminals. Ensure that the shunt and the wire current
ratings are higher than the power supply rating. Connect a DVM to the shunt.
3. Turn the front panel AC power switch to the On position,
4. Turn On the output by pressing OUT pushbutton so the OUT LED illuminates.
5. Observe the power supply CURRENT display and rotate the CURRENT encoder. Ensure that
the Output Current varies while the CURRENT encoder is rotated. The minimum control
range is from zero to the maximum rated output for the power supply model.
Compare the DVM reading with the front panel CURRENT display to verify the accuracy of
the CURRENT display. Ensure that the front panel CURRENT LED is On.
6. Turn Off the front panel AC power switch.
7. Remove the shunt from the power supply output terminals.
3.8.5 OVP Check
Refer to Section 5.3 for explanation of the OVP function prior to performing the procedure below.
1. Turn the front panel AC power switch to the On position and turn on the output by pressing
OUT pushbutton.
2. Using the VOLT encoder, adjust the Output Voltage to approx. 10% of the unit voltage rating.
3. Momentarily press the OVP/UVL button so that the CURRENT display shows “OUP”. The
VOLTAGE display will show the last setting of the OVP level.
4. Rotate the VOLT encoder CCW to adjust the OVP setting to 50% of the unit voltage rating.
5. Wait a few seconds until the VOLT display returns to show the Output Voltage.
6. Adjust the Output Voltage toward its maximum and check that the Output Voltage cannot be
increased more than the OVP setting.
7. Adjust OVP limit to the maximum by repeating Step 3 and rotating the VOLT encoder CW.
3.8.6 UVL Check
Refer to Section 5.4 for explanation of the UVL function prior to performing the procedure below.
1. Press the OVP/UVL button TWICE so that the CURRENT display shows “UUL”. The
VOLTAGE display will show the last setting of the UVL level.
2. Rotate the VOLT encoder to adjust the UVL level to approx. 10% of the unit voltage rating.
3. Wait a few seconds until the VOLT display returns to show the output voltage.
4. Adjust the output voltage toward its minimum and check that the output voltage cannot be
decreased below the UVL setting.
5. Adjust the UVL limit to the minimum by repeating step 1 and rotating the VOLT encoder CCW.
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3.8.7 Foldback Check
WARNING
Shorting the output may expose the user to hazardous
voltages. Observe proper safety procedures.
Refer to Section 5.5 for explanation of the FOLD function prior to performing the procedure below.
1. Ensure that the Output Voltage is set to approx. 10% of the unit rating.
2. Adjust the CURRENT encoder to set the Output Current setting to approx. 10% of the unit
rating.
3. Momentarily press the FOLD button. Ensure that the FOLD LED illuminates. The Output
Voltage remains unchanged.
4. Short the output terminals momentarily (approx. 0.5 sec.). Ensure that the Output Voltage
falls to zero, the VOLT display shows “Fb” and the ALARM LED blinks.
5. Press the FOLD button again to cancel the protection. The Output Voltage remains zero.
6. Press the OUT button. Ensure that the Output Voltage returns to its last setting.
7. Turn the output off by pressing the OUT button. Ensure that the VOLT display shows “OFF”.
3.8.8 Address Setting
1. Press and hold the REM/LOC button for approx. 3 sec. The VOLT display will show the
communication port address.
2. Using the VOLT adjust encoder, check that the address can be set within the range of 0 to 30.
3.8.9 Baud Rate Setting (RS-232 and RS-485 only)
1. Press and hold the REM/LOC button for approx. 3 sec. The CURRENT display will show the
communication port Baud Rate.
2. Using The CURRENT adjust encoder, check that the Baud Rate can be set to 1200, 2400,
4800, 9600 and 19200.
3.9 CONNECTING THE LOAD
WARNING
Turn Off the AC input power before making or changing any rear
panel connection. Ensure that all connections are securely tight-
ened before applying power. There is a potential shock hazard
when using a power supply with a rated output greater than 40V.
3.9.1 Load Wiring
The following considerations should be made to select wiring for connecting the load to the
power supply:
∗ Current carrying capacity of the wire (refer to Section 3.9.2)
∗ Insulation rating of the wire should be at least equivalent to the maximum output voltage of
the power supply.
∗ Maximum wire length and voltage drop (refer to Section 3.9.2)
∗ Noise and impedance effects of the load wiring (refer to Section 3.9.4).
3.9.2 Current Carrying Capacity
Two factors must be considered when selecting the wire size:
1. Wires should be at least heavy enough not to overheat while carrying the power supply
load current at the rated load, or the current that would flow in the event the load wires
were shorted, whichever is greater.
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2. Wire size should be selected to enable voltage drop per lead to be less than 1.0V at the
rated current. Although units will compensate for up to 5V in each load wire, it is recom-
mended to minimize the voltage drop (1V typical maximum) to prevent excessive output
power consumption from the power supply and poor dynamic response to load changes.
Please refer to Tables 3-2 and 3-3 for minimum wire length (to limit voltage drop) in
American and European dimensions respectively.
Maximum length in Feet to limit
Wire size
AWG
Resistivity
OHM/1000ft
voltage drop to 1V or less
5A
80
10A
40
20A
20
50A
8
150A
2
3.4
6
10
16
26
40
68
14
12
10
8
6
4
2.526
1.589
120
200
320
500
800
1200
2000
60
30
12
0.9994
0.6285
0.3953
0.2486
0.1564
0.0983
100
160
250
400
600
1000
50
80
125
200
300
500
20
32
50
80
125
200
2
0
Table 3-2: Maximum wire length for 1V drop on lead (in feet)
Cross sect.
Maximum length in meters to limit
voltage drop to 1V or less
Resistivity
OHM/Km
area
(mm²)
2.5
4
6
10
16
25
35
5A
24.0
39.2
59.0
102.6
160.0
250.0
354.0
10A
12.0
18.6
29.4
51.2
80.0
125.0
177.0
20A
6.0
9.8
14.8
25.6
40.0
62.0
88.0
50A
2.4
4.0
150A
0.8
1.4
2.0
3.4
5.4
8.4
11.8
8.21
5.09
3.39
1.95
1.24
5.8
10.2
16.0
25.2
35.4
0.795
0.565
Table 3-3: Maximum wire length for 1 V drop on lead (in meters)
For currents not shown in Table 3-2 and 3-3, use the formula:
Maximum length=1000/(current x resistivity)
Where current is expressed in Amperes and resistivity in ohms/km or ohms/1000ft.
3.9.3 Wire termination
The wires should be properly terminated with terminals securely attached. DO NOT use untermi-
nated wires for load connection at the power supply.
CAUTION
When local sensing, a short from +LS or +S to -V or -S or -LS,
will cause damage to the power supply. Reversing the sense
wires might cause damage to the power supply in local and
remote sensing. (Do not connect -S to +V or +S to -V).
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3.9.4 Noise and Impedance Effects
To minimize the noise pickup or radiation, the load wires and remote sense wires should be
twisted pairs to the shortest possible length. Shielding of sense leads may be necessary in high
noise environments. Where shielding is used, connect the shield to the chassis via a rear panel
Ground screw. Even if noise is not a concern, the load and remote sense wires should be
twisted-pairs to reduce coupling, which might impact the stability of power supply. The sense
leads should be separated from the power leads.
Twisting the load wires reduces the parasitic inductance of the cable, which could produce high
frequency voltage spikes at the load and the output of the power supply, because of current
variation in the load itself.
The impedance introduced between the power supply output and the load could make the ripple
and noise at the load worse than the noise at the power supply rear panel output. Additional filter-
ing with bypass capacitors at the load terminals may be required to bypass the high frequency
load current.
3.9.5 Inductive loads
Inductive loads can produce voltage spikes that may be harmful to the power supply. A diode
should be connected across the output. The diode voltage and current rating should be greater
than the power supply maximum output voltage and current rating. Connect the cathode to the
positive output and the anode to the negative output of the power supply.
Where positive load transients such as back EMF from a motor may occur, connect a surge sup-
pressor across the output to protect the power supply. The breakdown voltage rating of the sup-
pressor must be approximately 10% higher than the maximum output voltage of the power sup-
ply.
3.9.6 Making the load connections
WARNING
Hazardous voltages may exist at the outputs and the load connec-
tions when using a power supply with a rated output greater than 40V.
To protect personnel against accidental contact with hazardous volt-
ages, ensure that the load and its connections have no accessible live
parts. Ensure that the load wiring insulation rating is greater than or
equal to the maximum output voltage of the power supply.
CAUTION
Ensure that the load wiring mounting hardware does not short the output
terminals. Heavy connecting cables must have some form of strain relief
to prevent loosening the connections or bending the bus-bars.
6V to 60V Models
Refer to Fig.3-5 for connection of the load wires to the power supply bus-bars and to Fig.3-6 for
mounting the bus-bars shield to the chassis.
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Fig. 3-6: bus-bars shield mounting
WARNING
80V to 600V Models
Hazardous voltages exist at the outputs and the load connections. To
protect personnel against accidental contact with hazardous voltages,
ensure that the load and its connections have no accessible live parts.
Ensure that the load wiring insulation rating is greater than or equal to
the maximum output voltage of the power supply.
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The 80V to 600V models have a four terminal wire clamp output connector. The two left terminals
are the positive outputs and the two right terminals are the negative outputs. The connector re-
quirements are as follows:
1. Wires: AWG18 to AWG10.
2. Tightening torque: 6.5-7.0 Lb-inch.
Follow the instructions below for connection of the load wires to the power supply:
1. Strip approx. 10mm (0.39 inches) at the end of each of the wires.
2. Loosen the connector terminal screws.
3. Insert the stripped wires into the terminal and tighten the terminal screw securely (see
Fig.3-7)
4. Loosen the two chassis screws marked “A” halfway as shown in Fig.3-8.
5. Assemble the protective shield to the chassis and tighten the two screws to fix the shield
to the chassis (see Fig.3-8). Screws tightening torque: 4.8-5.3 Lb-inch.
6. Tighten the wires to one of the shield sides using ty-wrap or equivalent. Refer to Fig.3-9.
Ensure that the wire length inside the shield is long enough to provide proper strain relief.
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3.9.7 Connecting single loads, local sensing (default).
Fig.3-10 shows recommended load and sensing connections for a single load. The local sense
lines shown are default connections at the rear panel J2 sense connector. Local sensing is suit-
able for applications where load regulation is less critical.
+V
-V
+
Load
Power
Supply
-Rem.sense
-Local sense
Load lines, twisted
pair, shortest length
possible.
+
Local sense
Rem.sense
+
Fig.3-10: Single load connection, local sensing
3.9.8 Connecting single loads, remote sensing
Fig.3-11 shows recommended remote sensing connection for single loads. Remote sensing is
used when, in Constant Voltage mode, the load regulation is important at the load terminals. Use
twisted or shielded wires to minimize noise pick-up. If shielded wires are used, the shield should
be connected to the ground at one point, either at the power supply chassis or the load ground.
The optimal point for the shield ground should be determined by experimentation.
Load lines. Twisted pair
shortest length possible.
+V
-V
+
Load
Power
Supply
-Rem.sense
-Local sense
+
+
Local sense
Rem.sense
Sense lines. Twisted
pair or shielded.
Fig.3-11: Remote sensing, single load
3.9.9 Connecting multiple loads, radial distribution method
Fig.3-12 shows multiple loads connected to one supply. Each load should be connected to the
power supply’s output terminals using separate airs of wires. It is recommended that each pair of
wires will be as short as possible and twisted or shielded to minimize noise pick-up and radiation.
The sense wires should be connected to the power supply output terminals or to the load with the
most critical load regulation requirement.
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Load lines, twisted pair,
shortest length possible.
+V
-V
+
+
Load#1
Load#2
Power
Supply
-Rem.sense
-Local sense
+
Load#3
+
Local sense
Rem.sense
+
Fig.3-12: Multiple loads connection, radial distribution, local sense
3.9.10 Multiple load connection with distribution terminals
If remotely located output distribution terminals are used, the power supply output terminals
should be connected to the distribution terminals by pair of twisted and/or shielded wires. Each
load should be separately connected to the remote distribution terminals (see Fig.3-13).
If remote sensing is required, the sensing wires should be connected to the distribution terminals
or at the most critical load.
Distributionterminal
+V
+
Load#1
Load#2
+V
Power
Supply
-V
+
+
-Rem.sense
-Local sense
-V
Load#3
+
+
Local sense
Rem.sense
Fig.3-13: Multiple loads connection with distribution terminal
3.9.11 Grounding outputs
Either the positive or negative output terminals can be grounded. To avoid noise probems
caused by common-mode current flowing from the load to ground, it is recommended to ground
the output terminal as close as possible to the power supply chassis ground.
Always use two wires to connect the load to the power supply regardless of how the system is
grounded.
WARNING
Models up to 60VDC Rated Output shall not float outputs more
than +/-60VDC above/below chassis ground. Models > 60VDC
Rated Output shall not float outputs more than +/-600VDC
above/below chassis ground.
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WARNING
OUTPUT TERMINAL GROUNDING
There is a potential shock hazard at the RS232/RS485 and the IEEE ports when
using power supplies with rated or combined voltage greater than 400V with the
Positive Output of the power supplies grounded. Do not connect the Positive out-
put to ground when using the RS232/RS485 or IEEE under the above conditions.
3.10 LOCAL AND REMOTE SENSING
The rear panel J2 sense connector is used to configure the power supply for local or remote
sensing of the Output Voltage. Refer to Fig.3-14 for sense connector location.
3.10.1 Sense wiring
WARNING
There is a potential shock hazard at the sense connector when using a power
supply with a rated Output Voltage greater than 40V. Local sense and remote
sense wires should have a minimum insulation rating equivalent or greater than
the maximum Output Voltage of the power supply. Ensure that the connections at
the load end are shielded to prevent accidental contact with hazardous voltages.
3.10.2 Local sensing
The power supply is shipped with the rear panel J2 sense connector wired for local sensing of
the Output Voltage. See Table 3-4 for J2 terminals assignment. With local sensing, the Output
Voltage regulation is made at the output terminals. This method does not compensate for voltage
drop on the load wires, therefore it is recommended only for low load current applications or
where the load regulation is less critical.
Fig.3-14: Sense connector location
Table 3-4: J2 terminals
Terminal Function
J2-1
J2-2
J2-3
J2-4
J2-5
Remote positive sense (+S)
Local positive sense. Connected internally to the positive output terminal (+LS).
Not connected (NC)
Local negative sense. Connected internally to the negative output terminal (-LS).
Remote negative sense (-S).
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3.10.3 Remote sensing
WARNING
There is a potential shock hazard at the sense point when using a power supply
with a rated Output Voltage greater than 40V. Ensure that the connections at the
load end are shielded to prevent accidental contact with hazardous voltages.
CAUTION
When using shielded sense wires, ground the shield
in one place only. The location can be the power
supply chassis or one of the output terminals.
Use remote sense where the load regulation at the load end is critical. In remote sense, the
power supply will compensate for voltage drop on the load wires. Refer to the power supply
specifications for the maximum voltage drop on load wires. The voltage drop is subtracted from
the total voltage available at the output. Follow the instructions below to configure the power
supply for remote sensing:
1. Ensure that the AC On/Off is in the Off position.
2. Remove the local sense jumpers from J2.
3. Connect the negative sense lead to terminal J2-5 (S) and the positive sense lead to terminal
J2-1(+S) of the J2 mating connector. Ensure that the J2 mating connector is plugged se-
curely into the rear panel sense connector, J2.
4. Turn On the power supply.
Notes:
1. If the power supply is operating in remote sense and either the positive or negative load wire
is not connected, an internal protection circuit will activate and shut down the power supply.
To resume operation, turn the AC On/Off to the Off position, connect the open load wire, and
turn On the power supply.
2. If the power supply is operated without the remote sense lines or local sense jumpers, it will
continue to work, but the output voltage regulation will be degraded. Also, the OVP circuit
may activate and shut down the power supply.
3.10.4 J2 sense connector technical information
-
-
-
-
-
J2 connector type: MC 1.5/5-G-3.81, Phoenix.
Plug type: MC 1.5/5-ST-3.81, Phoenix.
Wire AWG; 28 up to 16.
Stripping length: 7mm (0.28 inches).
Tightening torque: 0.22-0.25Nm (1.95-2.21Lb-Inch.)
3.11 REPACKAGING FOR SHIPMENT
To ensure safe transportation of the instrument, contact the TDK-Lambda Americas Inc. sales or
service facility near you for Return Authorization and shipping information. Please attach a tag to
the power supply describing the problem and specifying the owner, model number and serial
number of the power supply. Refer to Warranty Information for further instructions.
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CHAPTER 4 FRONT AND REAR PANEL CONTROLS AND CONNECTORS
4.1 INTRODUCTION
The GenesysTM Power Supply series has a full set of controls, indicators and connectors that al-
low the user to easily setup and operate the unit. Before starting to operate the unit, please read
the following Sections for explanation of the functions of the controls and connectors terminals.
-Section 4.2: Front Panel Controls and Indicators.
-Section 4.3: Rear Panel Connections and Controls.
4.2 FRONT PANEL CONTROLS AND INDICATORS
See Fig.4-1 to review the controls, indicators and meters located on the power supply front panel.
6
3
2
4
5
1
VOLTAGE
CURRENT
DC AMPS
DC VOLTS
OVP
UVL
PREV/
REM/LOC
OUT
ALARM FINE
FOLD
POWER
19
16
14
11
7
13
9
18
15
8
17
10
12
Fig.4-1: Front panel controls and indicators
Table 4-1: Front Panel controls and indicators
Number
1
Control/Indicator
Description
Section
5.2.1
5.3.1
5.4.1
7.2.2
VOLTAGE
control
High resolution rotary encoder for adjusting the Out-
put Voltage. Also adjusts the OVP/UVL levels and
selects the Address
2
3
VOLTAGE
indicator
Green LED, lights for constant-Voltage mode opera-
tion.
VOLTAGE
display
4 digit, 7-segment LED display. Normally displays
the Output Voltage. When the PREV button is
pressed, the display indicates the programmed set-
ting of the Output Voltage. When the OVP/UVL but-
ton is pressed, the Voltage display indicates the
OVP/UVL setting.
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Table 4-1: Front Panel Controls and Indicators
Section
Number Control/Indicator
Description
4 digit, 7 segment LED display. Normally displays the Output
Current. When the PREV button is pressed, the display indi-
cates the programmed setting of Output Current.
4
CURRENT display
5
6
CURRENT indicator
CURRENT control
Green LED, lights for Constant-Current mode operation
High resolution rotary encoder for adjusting the Output Current. 5.2.2
Auxiliary Function:
1) Selects the Baud-Rate of communication port
7.2.4
5.15.2
2) Set desired mode of the Master Power Supply in
Advanced parallel operation.
7
OUT button
5.6
Main function: Output ON/OFF control. Press OUT to set the
output On or Off. Press to reset and turn On the output after
OVP or FOLD alarm events have occurred. Auxiliary function:
Selects between “Safe-Start” and “Auto-Restart” modes. Press
and hold OUT button to toggle between “Safe-Start” and “Auto-
Restart”. The VOLT display will cycle between “SAF” and
“AUT”. Releasing the OUT button while one of the modes is
displayed, selects that mode.
5.11
8
9
OUT indicator
Green LED, lights when the DC output is enabled.
Main function: Go to local. Press REM/LOC to put the unit into
Local mode (REM/LOC button is disabled at Local Lockout
mode).
Auxiliary function: Address and Baud Rate setting. Press and
hold REM/LOC for 3 sec. to set the Address with the VOLTAGE
encoder and the Baud Rate with the CURRENT encoder.
7.2.5
7.2.2
7.2.4
REM/LOC button
10
11
REM/LOC indicator
FOLD button
Green LED, lights when the unit is in Remote mode.
Foldback protection control.
5.5
-Press FOLD to set Foldback protection to On.
-To release Foldback alarm even, press OUT to enable the out-
put and re-arm the protection.
-Press FOLD again to cancel the Foldback protection.
12
13
FOLD indicator
Green LED, lights when Foldback protection is On.
Over Voltage Protection and Under Voltage limit setting.
-Press once to set OVP using VOLTAGE encoder (the current
display shows “OUP”)
OVP/UVL button
5.3
5.4
-Press again to set the UVL using VOLTAGE encoder (the cur-
rent display shows “UUL”).
Main function: Press PREV to display the Output Voltage and
Current setting. For 5 sec. the display will show the setting and
then it will return to show the actual Output Voltage and Cur-
rent.
14
PREV button
5.17
Auxiliary function: Front Panel Lock. Press and hold PREV
button to toggle between “Locked front panel” and “Unlocked
front panel”. The display will cycle between “LFP” and “UFP”.
Releasing the PREV button while one of the modes is displayed
selects that mode.
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Table 4-1: Front Panel Controls and Indicators (continued)
Section
5.15.2
Number Control/Indicator
Description
Green LED, lights when PREV button is pressed
15
16
PREV indicator
FINE button
Voltage and Current Fine/Coarse adjustment control. Op-
erates as a toggle switch. In Fine mode, the VOLTAGE
and CURRENT encoders operate with high resolution and
in Coarse mode with lower resolution (approx. 6 turns).
Auxiliary function: Set units as Master or Slave in Ad-
vanced parallel operation.
Green LED, lights when the unit is in Fine mode.
17
18
FINE indicator
Red LED, blinks in case of fault detection. OVP, OTP
Foldback, Enable and AC fail detection will cause the
ALARM LED to blink.
ALARM indicator
19
AC Power switch AC On/Off control.
4.3 REAR PANEL CONNECTIONS AND CONTROLS
See Fig.4-2 to review the connections and controls located on the power supply rear panel. Refer
to Table 4-2 for explanations about the rear panel connections and controls.
Fig.4-2: Rear panel connections and controls
Table 4-2: Rear panel connections and controls
Section
Number Item
Description
Wire clamp connector for 1500W units.
IEC connector for 750W units.
3.7.1
3.7.2
AC input
connector
1
2
Bus-bars for 6V to 60V models.
Wire clamp connector for 80V to 600V models.
DC output
3.9.6
3
Remote-In RJ-45 type connector, used for connecting power supplies to
connector RS232 or RS485 port of computer for remote control purposes.
When using several power supplies in a power system, the first
unit Remote-In is connected to the computer and the remaining
units are daisy-chained, Remote-In to Remote-Out.
7.3
7.5
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Table 4-2: Rear panel Connections and Controls (continued)
Section
Number
Item
Description
RJ-45 type connector, used for daisy-chaining power supplies to
form a serial communication bus.
7.3
7.5
Remote Out
connector
4
5
Connector for remote analog interface. Includes Output Voltage
and Current programming and monitoring signals, Shut-off control
(electrical signal), Enable/Disable control (dry-contact), Power Sup-
ply OK (PS_OK) signal and operation mode (CV/CC) signal.
Nine position DIP-switch for selecting remote programming and
monitoring modes for Output Voltage, Output Current and other
control functions.
J1 Analog
Remote
connector
4.5
6
7
8
SW1 Setup
switch
4.4
J2 Remote
sense
connector
Connector for making remote sensing connections to the load for 3.10
regulation of the load voltage and compensation of load wire drop.
3.8.2
Blank sub-plate for standard units. Isolated Remote Analog pro-
gramming connector for units equipped with Isolated Analog control
option. IEEE connector for units equipped with IEEE programming
option (shown).
Blank
Sub-plate
Fig. 4.2
Two position DIP-switch for selecting IEEE mode or RS232/RS485
mode when IEEE option is installed.
M4x0.7, 8mm long DBL-SEMS screw for chassis ground
connection.
9
IEEE switch
Fig. 4.2
Fig. 4.2
Ground
screw
10
4.4 REAR PANEL SW1 SETUP SWITCH
The SW1 Setup switch (see Fig.4-3) is a 9-position DIP-switch that allows the user to choose the
following:
− Internal or remote programming for Output Voltage and Output Current.
− Remote voltage or resistive programming of Output Voltage and Output Current limit.
− Select range of remote voltage and resistive programming.
− Select range of output Voltage and Output Current monitoring.
− Select the Remote Shut-Off control logic.
− Select between RS232 and RS485 communication interface.
− Enable or disable the rear panel Enable/Disable control (dry contact).
9
8
7
6
5
4
3
2
1
Fig.4-3: SW1 setup DIP-switch
4.4.1 SW1 position function
Refer to Table 4-3 for description of SW1 position functions. The factory default setting is
Down for all positions.
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Table 4-3: SW1 Positions Functions
Position
Function
UP
DOWN (Factory default)
Output Voltage
programmed by remote
analog voltage
Output Voltage
programmed by
Front Panel
Output Voltage
remote analog programming
SW1-1
SW1-2
Output Current
programmed by Front
Panel
Output Current
programmed by remote
analog voltage
Output Current
remote analog programming
Programming Range Select
(Remote voltage/resistive)
SW1-3
SW1-4
0-5V/(0-5Kohm)
0-5V
0-10V/(0-10Kohm)
0-10V
Output Voltage and
Current Monitoring Range
Off: Low (2-15V) or Open
On: High (0-0.6V) or Short
Off: Low (0-0.6V) or Short
On: High (2-15V) or Open
SW1-5
SW1-6
Shut-Off Logic select
RS232/485 select
RS232 interface
RS485 interface
Output Voltage
programmed by Front
Panel
Output Voltage
programmed by
external resistor
Output Voltage
Resistive Programming
SW1-7
SW1-8
SW1-9
Output Current
programmed by Front
Panel
Output Current
programmed by external
resistor
Output Current
Resistive Programming
Rear panel
Enable/Disable control is
not Active
Rear panel
Enable/Disable control
is Active
Enable/Disable control
4.4.2 Resetting the SW1 switch
Before making any changes to the SW1 switch setting, disable the power supply output by press-
ing the front panel OUT button. Ensure that the Output Voltage falls to zero and the OUT LED is
Off. Then use any small flat-bladed screwdriver to change the SW1 switch setting.
4.5 REAR PANEL J1 PROGRAMMING AND MONITORING CONNECTOR
The J1 Programming and Monitoring connector is a DB25 subminiature connector located on the
power supply rear panel. Refer to Table 4-4 for description of the connector functions. The power
supply default configuration is Local operation, which does not require connections to J1. For
remote operation using J1 signals, use the plug provided with power supply (or equivalent type).
It is essential to use a plastic body plug to conform to Safety Agency requirements. If a shield is
required for the J1 wires, connect the shield to a power supply chassis ground screw.
4.5.1 Making J1 connections
-J1 Connector type: AMP, P/N:747461-3
-J1 plug description: AMP, P/N:745211-2
-Wire dimension range: AWG26-22
-Manual Pistol grip tool:
Handle:AMP, P/N:58074-1
Head:AMP, P/N:58063-2
-Insertion/Extraction tool: AMP, 91232-1
Before making any connection, turn the AC On/Off switch to the Off position and wait until the
front panel display has turned Off.
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CAUTION
Terminals 12, 22 and 23 of J1 are connected internally to
the negative sense (-S) potential of the power supply. Do
not attempt to bias any of these terminals relative to the
negative sense. Use the Isolated Programming interface
option to allow control from a programming source at a dif-
ferent potential relative to the power supply negative.
CAUTION
To prevent ground loops and to maintain power supply isola-
tion when programming from J1, use an ungrounded pro-
gramming source.
WARNING
There is a potential shock hazard at the output when using a
power supply with rated output greater than 40V. Use wires
with minimum insulation rating equivalent to the maximum
output voltage of the power supply.
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Same ground
as P/S negative
sense (-S)
IF_COM
IF_COM
ENA_IN
VMON
COM
CV/CC
IPGM
VPGM
LOC/
REM
12
24
9
8
4
2
13
25
11
23
10
22
7
6
5
3
1
21
20
18
17
19
16
15
14
Isolated from
PS outputs,
same ground
P
IMON
IPGM_RTN
VPGM_RTN
ENA_OUT
SO
PS_OK
as RS232/RS485
LOC/REM SIGNAL
Fig. 4-4: J1 Connector terminals and functions
Table 4-4: J1 connector terminals and functions
J1
contact
Signal
name
Function
Reference
J1-1
ENA_IN
Enable/Disable the power supply output by dry-contact Sec. 5.8
(short/open) with ENA_OUT.
J1-2
J1-3
IF_COM
Isolated Interface Common. Return for the SO control, Sec.5.7,
PS_OK signal and for the optional IEEE interface.
5.10
J1-4i7
J1-8
N/C
No Connection
LOCAL/
REMOTE
VPGM
Input for selecting between Local or Remote analog pro- Sec. 6.2
gramming of Output Voltage and Output Current.
Input for remote analog voltage/resistance programming Sec.
J1-9
of the Output Voltage.
6.1i6.4
J1-10
IPGM
Input for remote analog voltage/resistance programming Sec.
of the Output Current.
6.1i6.4
J1-11
J1-12
VMON
COM
Output for monitoring the power supply Output Voltage.
Control Common. Return for VMON, IMON, CV/CC, LOC/REM.
Connected internally to the negative sense potential (-S).
Sec. 6.6
J1-13
J1-14
CV/CC
Output for Constant-Voltage/Constant-Current mode
indication.
Enable/Disable the power supply output by dry-contact Sec. 5.8
(short/open) with ENA_IN.
Sec. 5.9
ENA_OUT
J1-15
J1-16
J1-17i20 N/C
SO
PS_OK
Input for Shut-Off control of the power supply output.
Output for indication of the power supply status.
No Connection.
Sec. 5.7
Sec. 5.10
J1-21
J1-22
J1-23
LOC/REM
SIGNAL
Output for indicating if the unit is in Local or Remote ana- Sec. 6.3
log programming mode.
VPGM_RTN Return for VPGM input. Connected internally to the “-S”.
Sec. 6.1,
6.4, 6.5
Sec. 6.1,
6.4, 6.5
IPGM_RTN Return for IPGM input. Connected internally to the “-S”.
J1-24
J1-25
IMON
P
Output for monitoring the power supply Output Current.
Output for current balance in parallel operation.
Sec. 6.6
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CHAPTER 5 LOCAL OPERATION
5.1 INTRODUCTION
This Chapter describes the operating modes that are not involved in programming and monitor-
ing the power supply via its serial communication port (RS232/RS485) or by remote analog sig-
nals. Ensure that the REM/LOC LED on the front panel is Off, indicating Local mode. If the
REM/LOC LED is On, press the front panel REM/LOC button to change the operating mode to
Local.
-For information regarding Remote Analog Programming, refer to Chapter 6.
-For information regarding usage of the Serial Communication Port, refer to Chapter 7.
5.2 STANDARD OPERATION
The power supply has two basic operating modes: Constant Voltage Mode and Constant Current
Mode. The mode in which the power supply operates at any given time depends on the Output
Voltage setting, Output Current setting and the load resistance.
5.2.1 Constant Voltage Mode
1. In constant voltage mode, the power supply regulates the Output Voltage at the selected
value, while the load current varies as required by the load.
2. While the power supply operates in constant voltage mode, the VOLTAGE LED on the front
panel illuminates.
3. Adjustment of the Output Voltage can be made when the power supply output is enabled
(Output On) or disabled (Output Off). When the output is enabled, simply rotate the
VOLTAGE encoder knob to program the output voltage. When the output is disabled, press
the PREV button and then rotate the VOLTAGE encoder knob. The VOLTAGE meter will
show the programmed Output Voltage for 5 seconds after the adjustment has been com-
pleted. Then the VOLTAGE meter will display “OFF”.
4. Adjustment resolution can be set to coarse or fine resolution. Press FINE button to select be-
tween the lower and higher resolution. The FINE LED turns On when the resolution is set to
FINE.
NOTE
If after completing the adjustment, the display shows a different value
than the setting, the power supply may be at current limit. Check the
load condition and the power supply Output Current setting.
NOTE
The maximum and minimum setting values of the output voltage are
limited by the Over Voltage protection and Under Voltage limit setting.
Refer to Sections 5.3 and 5.4 for more details.
5.2.2 Constant Current Mode
1. In constant current mode, the power supply regulates the Output Current at the selected
value, while the voltage varies with the load requirement.
2. While the power supply is operating in constant current mode, the CURRENT LED on the
front panel illuminates.
3. Adjustment of the Output Current setting can be made when the power supply output is en-
abled (Output On) or disabled (Output Off).
-Disabled output (Off): Press PREV button and then rotate the Current encoder knob. The
CURRENT meter will show the programmed Output Current limit for 5 seconds after the ad-
justment has been completed. Then the VOLTAGE meter will display “OFF”.
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-Enabled output, power supply in Constant Voltage mode: Press the PREV button and
then rotate the CURRENT encoder knob. The CURRENT meter will show the pro-
grammed Output Current for 5 seconds after the adjustment has been completed, and
then will return to show the actual load current.
-Enabled output, power supply in Constant Current mode: Rotate the CURRENT encoder
knob to adjust the Output Current.
4. Adjustment resolution can be set to Coarse or Fine adjustment. Press the FINE button to se-
lect between the Coarse and Fine resolution. The FINE LED turns On when the resolution is
set to FINE.
5.2.3 Automatic Crossover
If the power supply operates in Constant Voltage mode, while the load current is increased to
greater than the current limit setting, the power supply will automatically switch to Constant Cur-
rent mode. If the load is decreased to less than the current limit setting, the power supply will
automatically switch back to Constant Voltage mode.
5.3 OVER VOLTAGE PROTECTION (OVP)
The OVP circuit protects the load in the event of a remote or local programming error or a power
supply failure. The protection circuit monitors the voltage at the power supply sense points and
thus provides the protection level at the load. Upon detection of an Over Voltage condition, the
power supply output will shut down.
5.3.1 Setting the OVP level
The OVP can be set when the power supply output is Enabled (On) or Disabled (Off). To set the
OVP level, press the OVP/UVL button, so that the CURRENT meter shows “OUP”. The
VOLTAGE meter shows the OVP setting level. Rotate the VOLTAGE encoder knob to adjust the
OVP level. The display will show “OUP” and the setting value for 5 seconds after the adjustment
has been completed, and then will return to its previous state.
Model
Max.
OVP
Model
Max.
OVP
The minimum setting level is approximately 105% of
the set Output Voltage, or the value in Table 7-6,
whichever is higher. The maximum setting level is
shown in Table 5-1.
6V
8V
12.5V
20V
30V
40V
7.5V
10.0V
15.0V
24.0V
36.0V
44.0V
60V
80V
100V
150V
300V
600V
66.0V
88.0V
110.0V
165.0V
330.0V
660.0V
To preview the OVP setting, press the OVP/UVL
pushbutton so that the CURRENT display will show
“OUP”. At this time, the VOLTAGE display will show
the OVP setting. After 5 seconds, the display will re-
turn to its previous state.
Table 5-1: Maximum OVP setting levels
5.3.2 Activated OVP protection indications
When the OVP is activated the power supply output shuts down. The VOLTAGE display shows
“OUP” and the ALARM LED blinks.
5.3.3 Resetting the OVP circuit
To reset the OVP circuit after it activates:
1. Reduce the power supply Output Voltage setting below the OVP set level.
2. Ensure that the load and the sense wiring are connected properly.
3. There are four methods to reset the OVP circuit.
a) Press the OUT button.
b) Turn the power supply Off using the AC On/Off switch, wait until the front panel display
turns Off, then turn the power supply On using the AC On/Off switch.
c) Turn the power supply output Off and then On using the SO control (refer to Section 5.7).
In this method the power supply should be set to Auto-Restart mode.
d) Send an OUT 1command via the RS232/RS485 communication port.
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5.4 UNDER VOLTAGE LIMIT (UVL)
The UVL prevents adjustment of the Output Voltage below a certain limit. The combination of
UVL and OVP functions, allow the user to create a protection window for sensitive load circuitry.
5.4.1 Setting the UVL level
Setting the UVL can be made when the power supply output is Enabled (On) or Disabled (Off).
To set the UVL level, press the OVP/UVL button TWICE, so that the CURRENT meter shows
“UUL”. The VOLTAGE meter shows the UVL setting level. Rotate the VOLTAGE encoder knob to
adjust the UVL level. The display will show ‘UUL” and the setting value for 5 seconds after the
adjustment has been completed and then will return to its previous state.
UVL setting values are limited at the maximum level to approximately 95% of the Output Voltage
setting. Attempting to adjust the UVL above this limit will result in no response to the adjustment
attempt. The minimum UVL setting is zero.
5.5 FOLDBACK PROTECTION
Foldback protection will shut down the power supply output if the load current exceeds the cur-
rent limit setting level. This protection is useful when the load circuitry is sensitive to an overcur-
rent condition.
5.5.1 Setting the Foldback protection
To arm the Foldback protection, the FOLD button should be pressed so that the FOLD LED illu-
minates. In this condition, transition from Constant Voltage to Constant Current mode will acti-
vate the Foldback protection. Activation of the Foldback protection disables the power supply
output, causes the ALARM LED to blink and displays “Fb” on the VOLTAGE meter.
5.5.2 Resetting activated Foldback protection
There are four methods to reset an activated Foldback protection.
1. Press the OUT button. The power supply output is enabled and the Output Voltage and Cur-
rent will return to their last setting. In this method, the Foldback protection remains armed,
therefore if the load current is higher than the current limit setting, the Foldback protection will
be activated again.
2. Press the FOLD button to cancel the Foldback protection. The power supply output will be
disabled and the VOLTAGE display will show “OFF”. Press the OUT button to enable the
power supply output.
3. Turn the power supply output Off and then On using the SO control (refer to Section 5.7). In
this method the Foldback protection remains armed, therefore if the load current is higher
than the output current setting, the Foldback protection will be activated.
4. Turn the power supply Off using the AC On/Off switch, wait until the front panel display turns
Off, then turn the unit back ON again. The power supply output is enabled and the Output
Voltage and Current will return to their last setting. In this method, the Foldback protection
remains armed, therefore if the load current is higher than the output current setting, the
Foldback protection will be activated again.
5.6 OUTPUT ON/OFF CONTROL
The Output On/Off Enables or Disables the power supply output. Use this function to make ad-
justments to either the power supply or the load without shutting off the AC power. The Output
On/Off can be activated from the front panel using the OUT button or from the rear panel J1
connector. The OUT button can be pressed at any time to Enable or Disable the power supply
output. When the output is disabled, the Output Voltage and Current fall to zero and the
VOLTAGE display shows “OFF”.
5.7 OUTPUT SHUT-OFF (SO) CONTROL VIA REAR PANEL J1 CONNECTOR
Contacts 2, 3 and 15 of J1 (Fig.4-2, Item 5) serve as Output Shut-Off (SO) terminals. The SO
terminals accept a 2.5V to 15V signal or Open-Short contact to disable or enable the power sup-
ply output. The SO function will be activated only when a transition from On to Off is detected
after applying AC power to the unit. (Thus, in Auto-Restart mode, the output will be Enabled after
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applying AC power; even if SO is at an Off level). After an On to Off transition it is detected, the
SO will Enable or Disable the power supply output according to the signal level or the short/open
applied to J1. This function is useful for connecting power supplies in a “Daisy-chain” (refer to
Section 5.16). The SO control can also be used to reset the OVP and Fold Protection (refer to
Section 5.3 and 5.5 for details).
When the unit is shut-off by a J1 signal, the VOLTAGE display will show “SO” to indicate the unit
state. J1 contact 15 is the SO signal input and contacts 2 and 3, IF_COM, are the signal return
(connected internally). Contacts 2, 3 and 15 are optically isolated from the power supply output.
The SO control logic can be selected by the rear panel SW1 Setup switch. Refer to Table 5-2 for
SW1 setting and SO Control Logic.
SW1-5 setting
Down (default)
Up
SO signal level
J1-2(3), 15
Power supply
output
Display
2-15V or Open
0-0.6V or Short
On
Off
Voltage/Current
“SO”
2-15V or Open
0-0.6V or Short
Off
On
“SO”
Voltage/Current
Table 5-2: SO logic selection
5.8 ENABLE/DISABLE CONTROL VIA REAR PANEL J1 CONNECTOR
Contacts 1 and 14 of J1 (Fig.4-2, item 5) serve as Output Enable/Disable terminals by switch or
relay. This function is Enabled or Disabled by the SW1 Setup switch position 9. Refer to Table 5-
3 for Enable/Disable function and SW1 setting.
SW1-9 setting
Down (Default)
Enable/Disable Inputs
Open or Short
Open
Power supply output
Display
Voltage/Current
“ENA”
ALARM LED
Off
On
Off
On
Blinking
Off
Up
Short
Voltage/Current
Table 5-3: Enable/Disable function and SW1 setting
CAUTION
To prevent possible damage to the unit, do not connect any of the
Enable/Disable inputs to the positive or negative output potential.
NOTE
Safe Start mode-If the Enable/Disable fault condition clears when units in safe start mode recov-
ery is by pressing OUT button or by sending an ‘OUT 1’ serial command. Auto Restart mode-The
output will return back ON automatically when the Enable/Disable fault conditions clears.
5.9 CV/CC SIGNAL
CV/CC signal indicates the operating mode of the power supply, Constant Voltage or Constant
Current. The CV/CC signal is an open collector output with a 30V parallel zener, at J1-13, refer-
enced to the COM potential at J1-12 (connected internally to the negative sense potential). When
the power supply operates in Constant Voltage mode, CV/CC output is open. When the power
supply operates in Constant Current mode, the CV/CC signal output is low (0-0.6), with maximum
10mA sink current.
CAUTION
Do not connect the CV/CC signal to a voltage source higher than 30VDC. Always
connect the CV/CC signal to voltage source with a series resistor to limit the sink
current to less than 10mA.
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5.10 PS_OK SIGNAL
The PS_OK signal indicates the fault condition of the power supply. PS_OK is a TTL signal out-
put at J1-16, referenced to IF_COM at J1-2, 3 (Isolated Interface Common). When a fault condi-
tion occurs, the PS_OK level is low, with a maximum sink current of 1mA; when no fault condition
occurs, the PS_OK level is high with a maximum source current of 2mA. The following faults will
set the PS_OK to a Fault state:
*OTP
*OVP
*Foldback
*AC fail
*Enable/Disable open (Power supply is disabled)
*SO (Rear panel Shut-Off, Power Supply is shut off)
*IEEE failure (With optional IEEE interface)
*Output Off
5.11 SAFE-START AND AUTO-RESTART MODES
When turning On the power supply AC On/Off, it can start to its last setting of Output Voltage
and Current with the output Enabled (Auto-restart mode) or start with the output Disabled (Safe-
start mode). Press and hold the OUT button to select between Safe-start and Auto-restart
modes. The VOLTAGE display will continuously cycle between “SAF” and “AU7” (“7” represents
“T”) every 3 seconds. Releasing the OUT pushbutton while one of the modes is displayed, se-
lects that mode. The default setting at shipment is Safe-start mode.
5.11.1 Auto-restart mode
In this mode, the power supply restores its last operation setting. Upon start-up, the output is en-
abled or disabled according to its last setting.
5.11.2 Safe-start mode
In this mode, the power supply restores its last operation setting and sets the Output to an Off
state. At start-up, the output is Disabled and the Output Voltage and Current are zero. To Enable
the output and restore the last Output Voltage and Current values, momentarily press the OUT
button.
5.12 OVER TEMPERATURE PROTECTON (OTP)
The OTP circuit shuts down the power supply before the internal components can exceed their
safe internal operating temperature. When an OTP shutdown occurs, the display shows “O7P”
and the ALARM LED blinks.
Resetting the OTP circuit can be automatic (non-latched) or manual (latched) depending on the
Safe-start or Auto-restart mode.
1. Safe-start mode: In Safe-start mode, the power supply stays Off after the over temperature
condition has been removed. The display continues to show “O7P” and the ALARM LED con-
tinues to blink. To reset the OTP circuit, press the OUT button (or send an OUT ON com-
mand via the serial port).
2. Auto-restart mode: In Auto-restart mode, the power supply recovers to its last setting auto-
matically when the over temperature condition is removed.
5.13 LAST SETTING MEMORY
The power supply is equipped with Last Setting Memory, which stores several power supply pa-
rameters at each AC turn-off sequence.
STORED PARAMETERS:
1. OUT On or Off
2. Output Voltage setting (PV setting)
3. Output Current setting (PC setting)
4. OVP level
5. UVL level
6. FOLD setting
7. Start-up mode (Safe-start or Auto-restart)
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8. Remote/Local: If the last setting was Local Lockout, (latched mode), the supply will return to
Remote mode (non-latched).
9. Address setting
10. Baud rate
11. Locked/Unlocked Front Panel (LFP/UFP)
(Items 8, 9, 10 are related to Remote Digital Control operation and are explained in Chapter 7)
12. Master/Slave setting.
5.14 SERIES OPERATION
Power supplies of the SAME MODEL can be connected in series to obtain increased output volt-
age. Split connection of the power supplies gives positive and negative output voltage.
CAUTION
Do not connected power supplies from different
manufacturers in series or in parallel.
5.14.1 Series connection for increased output voltage
In this mode, two units are connected so that their outputs are summed. Set the Current of each
power supply to the maximum that the load can handle without damage. It is recommended that
diodes be connected in parallel with each unit output to prevent reverse voltage during start up
sequence or in case one unit shuts down. Each diode should be rated to at least the power sup-
ply rated Output Voltage and Output Current. Refer to Fig.5-1 and 5-2 for series operation with
local and remote sensing.
WARNING
When power supplies are connected in series, and
the load or one of the output terminals is grounded,
no point may be at a greater potential of +/-60VDC
from ground for models up to 60VDC Rated Output
and +/-600VDC from ground for models >60VDC
Rated Output. When using RS232/RS485 or IEEE,
refer to the OUTPUT TERMINALS GROUNDING
warning in Section 3.9.11.
+S
+LS
+S
+LS
POWER
SUPPLY
+
POWER
SUPPLY
+
(*)
(*)
-
-
-S
-S
-LS
-LS
+
+
LOAD
-
LOAD
-
+S
+LS
+S
+LS
(*) Diodes are
user supplied.
+
POWER
SUPPLY
+
POWER
SUPPLY
(*)
(*)
-
-
-S
-LS
-S
-LS
Fig.5-1: Series connection, local sensing
Fig.5-2: Series connection, remote sensing
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Remote programming in series operation for increased output voltage:
1. Programming by external voltage: The analog programming circuits of this power su-
ply are referenced to the negative output potential.
Therefore, the circuits used to control each series
connected unit must be separated and floated from
each other.
2.Using the SO function and PS_OK signal:
The Shut-Off and PS_OK circuits are referenced to
the isolated interface common, IF_COM (J1-2,3).
The IF_COM terminals of different units can be
connected to obtain a single control circuit for the
power supplies connected in series.
3. Programming by external resistor:
4. Programming via the Serial
Programming by external resistor is possible. Refer
to Section 6-5 for details.
The communication port is referenced to the
IF_COM which is isolated from the power supply
output potential. Therefore power supplies con-
nected in series can be daisy-chained using the
Remote-In and Remote-Out connectors. Refer to
Chapter 7 for details.
5.14.2 Series connection for positive and negative output voltage
In this mode, two units are configured as a positive and negative output. Set the Output Current
limit of each power supply to the maximum that the load can handle without damage. It is rec-
ommended that diodes be connected in parallel with each unit output to prevent reverse voltage
during start-up or in case one of the units shuts down. Each diode should be rated to at least the
power supply rated output voltage and output current. Refer to Fig.5-3 for this operating mode.
+S
+LS
+
POWER
SUPPLY
(*)
-
-LS -S
+
-
+S
+LS
+
POWER
SUPPLY
(*)
(*) Diodes are user supplied.
-
-S
-LS
Fig.5-3: Series connection for positive/negative output voltages
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Remote programming in series operation for positive and negative output voltage
1. Programming by external voltage:
2. Using the SO function and PS_OK signal:
3. Programming by external resistor:
The analog programming circuits of this power
supply are referenced to the negative output po-
tential. Therefore, the circuits used to control
each series connected unit must be separated
and floated from each other.
The Shut-Off and PS_OK circuits are referenced
to the isolated interface common, IF_COM (J1-
2,3). The IF_COM terminals of the units can be
connected to obtain a single control circuit for the
power supplies connected in series.
Programming by external resistor is possible. Re-
fer to section 6.5 for details.
4. Programming via the Serial
The communication port is referenced to the
IF_COM which is isolated from the power supply
output potential. Therefore power supplies con-
nected in series can be chained using the Re-
mote-In and Remote-Out connectors. Refer to
chapter 7 for details.
Communication port (RS232/RS485):
5.15 PARALLEL OPERATION
Up to four units of the same VOLTAGE and CURRENT rating can be connected in parallel to
provide up to four times the Output Current capability. One of the units operates as a Master and
the remaining units are Slaves. The Slave units are analog programmed by the Master unit. In
remote digital operation, only the Master unit can be programmed by the computer, while the
Slave units may be connected to the computer for voltage, current and status readback only. Fol-
low the following procedure to configure multiple supplies for parallel operation. Refer to Sec.
5.15.1 and to Sec. 5.15.2 for detailed explanation.
5.15.1 Basic parallel operation
In this method, setting the units as Master and Slaves is made by the rear panel J1 connections
and the setup switch SW1. Each unit displays its own output current and voltage. To program the
load current, the Master unit should be programmed to the total load current divided by the num-
ber of units in the system. Refer to the following procedure to configure multiple supplies for basic
parallel operation.
1. Setting up the Master unit
Set the Master unit Output Voltage to the desired voltage. Program the Output Current to the
desired load current divided by the number of parallel units. During operation, the Master unit
operates in CV mode, regulating the load voltage at the programmed Output Voltage. Connect
the sensing circuit to local or remote sensing as shown in Fig.5-4 or fig.5-5.
2. Setting up the Slave units
-1. The Output Voltage of the Slave units should be programmed 2-5% higher than the Out-
put Voltage of the Master unit to prevent interference with the Master unit’s control. The Out-
put Current setting of each unit should be programmed to the desired load current divided by
the number of parallel units.
-
-
-
2. Set the rear panel setup switch SW1 position 2 to the up position.
3. Connect a wire jumper between J1-8 and J1-12 (refer to Table 4-4).
4. Connect J1 terminal 10(IPGM) of the slave unit to J1 terminal 25(P) of the master unit.
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During operation, the Slave units operate as a controlled current source following the Master
Output Current. It is recommended that the power system be designed so that each unit supplies
up to 95% of its current rating because of the imbalance which may be caused by cabling and
connection voltage drop.
3. Setting Over Voltage protection
The Master unit OVP setting should be programmed to the desired OVP level. The OVP set-
ting of the slave units should be programmed to a higher value than the Master OVP. When
the Master unit shuts down, it programs the Slave unit to zero Output Voltage. If a Slave unit
shuts down (when its OVP is set lower than the Master Output Voltage), only that Slave unit
would shut down, and the remaining Slave units would supply all the load current.
4. Setting Foldback protection
Foldback protection, is desired, may only be used with the Master unit. When the Master unit
shuts down, it programs the Slave units to zero Output Voltage.
5. Connection to the load
In parallel operation, power supplies can be connected in local or remote sensing. Refer to
Fig. 5-4 and 5-5 for typical connections of parallel power supplies. The figures show connec-
tion of two units, however the same connection method applies for up to 4 units.
5.15.2 Advanced parallel operation
In this method, multiple supplies can be configured to parallel operation as a single power supply.
The total load current and output voltage are displayed by the Master unit and can be readback
from the Master unit. The Slave units display only their operating status (On, Off or Fault condi-
tion).
Refer to the following procedure to configure multiple supplies for Advanced parallel operation.
1. Advanced parallel configuration
•
•
•
•
•
SW1 position 2 - Down in the Master Supply and up in all Slave Supplies.
Connect a short between J1-8 and J1-12 in all Slave Supplies.
Connect J1-25 of the Master Supply to J1-10 of all Slave Supplies.
Connect J1-16 of the Master Supply to J1-15 of the ‘First’ Slave Supply.
Connect J1-16 of the ‘First’ Slave Supply to J1-15 of the ‘Second’ Slave Supply (if
any)
•
Connect J1-16 of the ‘Second’ Slave Supply to J1-15 of the ‘Third’ Slave Supply (if
any)
•
•
•
Connect J1-16 of the ‘Last’ Slave Supply to J1-15 of the Master Supply
Connect J1-2 (or J1-3) common to all supplies
Select Local or Remote sense - Ref. Figures 5-4 and 5-5
2. Setting the units as Master or Slave
a) Depress and hold the FINE button for 3 seconds. The Master/Slave configuration will be dis-
played on the Current Display. Rotate the CURRENT encoder to obtain the desired mode. Refer
to Table 5-4 for the CURRENT display and modes of operation.
CURRENT Display
Operating Mode
Single supply (default)
Master supply with 1 Slave supply
Master supply with 2 Slave supplies
Master supply with 3 Slave supplies
Slave supply
H1
H2
H3
H4
S
Table 5-4: Setting mode of operation
b) When the desired configuration is obtained, depress and release the FINE button or wait
approx. 5 seconds.
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3. Master and Slave units default operation
a) When a unit is programmed to Slave mode it enters the Remote mode with Local Lockout. In
this mode, the front panel controls are disabled to prevent accidental setting change (refer to
Sec. 7.2.7 for details).
b) The Slave units parameters will automatically set the following:
*Output voltage to approximately 102% of rated output voltage.
*Programmed Current to zero.
*UVL to zero volts
*OVP to its maximum value
*AST On
*OUT On
*Foldback protection Off
c) The Master and Slave modes are stored in the power supply EEPROM when the AC power is
turned off. The system will return to the Master/Slave mode upon re-application of AC power.
4. CURRENT display accuracy
In the advanced parallel mode, the Master unit calculates the total current by multiplying the Master
output current by the number of Slave units. In this method, the CURRENT display accuracy is 2%
+/- 1 count. In cases that higher accuracy is required, it is recommended to use the basic parallel
operation mode.
5. To release units from Slave mode
Slave units can be released using the following procedure:
a) Depress FINE button for 3 seconds. The Master/Slave configuration will be displayed on the
CURRENT display.
b) Select H1 mode using the CURRENT encoder.
c) Depress FINE button again or wait 5 seconds.
d) Turn the AC power Off to store the new setting.
e) After exiting from Slave operation the unit’s parameters will be set to:
*Programmed Voltage to zero
*Programmed Current to zero
*UVL to zero volts
*OVP to its maximum value
*AST OFF
*OUT OFF
*Foldback protection OFF
*Locked Front Panel
+LS
-LS
+S
+
-S
To J1-10
SLAVE#2
POWER SUPPLY
As short as possible
V
MASTER
Twisted
pair
POWER SUPPLY
-
V
J1-25
P
LOAD
IPGM
J1-8 J1-12 J1-10
+V
SLAVE#1
POWER SUPPLY
-
V
-LS
-S
+LS +S
Fig.5-4: Parallel connection with local sensing
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+S
-S
Twisted
pair
-S
+S
To J1-10
SLAVE#2
POWER SUPPLY
As short as possible
Twisted
+
V
+S
MASTER
POWER SUPPLY
pair
-
V
J1-25
P
LOAD
IPGM
J1-8 J1-12 J1-10
+V
SLAVE#1
POWER SUPPLY
-S
-
V
+LS
-S
-LS
+S
Fig.5-5: Parallel operation with Remote sensing
CAUTION Make sure that the connection between –V terminals is reliable to avoid disconnection
during operation. Disconnection may cause damage to the power supply.
NOTE
With local sensing it is important to minimize the wire length and resistance. Also the positive and
negative wire resistance should be close as possible to each other to achieve current balance be-
tween power supplies
5.16 DAISY-CHAIN CONNECTION
It is possible to configure a multiple power supply system to shut down all the units when a fault
condition occurs in one of the units. When the fault is removed, the system recovers according to
its setting to Safe-start or Auto-restart mode.
Setup switch SW1, position 5 should be set to its DOWN position to enable the Daisy-chain op-
eration. Other SW1 positions can be set according to the application requirements.
If a fault occurs in one of the units, its PS_OK signal will be set to a low level and the display will
indicate the fault. The other units will shut off and their display will indicate “SO”. When the fault
condition is removed, the units will recover to their last setting according to their Safe-start or
Auto-restart setting.
Fig.5-6 shows connection of three units, however the same connection method applies to sys-
tems with a larger number of units.
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
#3
#1
#2
J1-2,3 J1-16
J1-2,3 J1-16
J1-15
SO
J1-15
J1-15
J1-2,3 J1-16
SO
PS_OK SO
IF_COM PS_OK
PS_OK
IF_COM
IF_COM
Fig.5-6: Daisy-chain connection
5.17 FRONT PANEL LOCKING
The front panel controls can be locked to protect from accidental power supply parameter
change. Press and hold the PREV button to toggle between “Locked front panel’ and “Unlocked
front panel”. The display will cycle between “LFP” and “UFP”. Releasing the PREV button while
one of the modes is displayed, selects that mode.
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5.17.1 Unlocked front panel
In this mode, the front panel controls are Enabled to program and monitor the power supply pa-
rameters.
5.17.2 Locked front panel
In this mode the following front panel controls are Disabled:
-VOLTAGE and CURRENT encoders.
-FOLD button.
-OUT button
The power supply will not respond to attempts to use these controls. The VOLT display will show
“LFP” to indicate that the front panel is locked.
OVP/ UVL button is active to preview the OVP and UVL setting.
Use the PREV button to preview the Output Voltage and Current setting or to unlock the front
panel.
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CHAPTER 6 REMOTE ANALOG PROGRAMMING
6.1 INTRODUCTION
The rear panel connector J1 allows the user to program the power supply Output Voltage and
Current with an analog device. J1 also provides monitoring signals for Output Voltage and Out-
put Current. The programming range and monitoring signals range can be selected between 0-
5V or 0-10V using the setup switch SW1. When the power supply is in Remote Analog pro-
gramming mode, the serial communication port is active and can be used to query the power
supply settings.
CAUTION
COM (J1-12), VPGM_RTN (J1-22) AND IPGM_RTN (J1-23) terminals of J1
connect internally to the -Sense potential (-S). Do not connect these terminals
to any potential other than -Sense (-S), as it may damage the power supply.
6.2 LOCAL/REMOTE ANALOG INDICATION
Contact 8 of J1 (Fig.4-2, Item 5) accepts TTL signal or Open-Short contact (referenced to J1-12)
to select between Local or Remote Analog programming of the Output Voltage and Current.
In Local mode, the Output Voltage and Output Current can be programmed via the front panel
VOLTAGE and CURRENT encoders or via the RS232/RS485 port. In Remote Analog mode, the
Output Voltage and current can be programmed by analog voltage or by programming resistors
via J1 contacts 9 and 10 (refer to Sections 6.4 and 6.5). Refer to Table 6-1 for Local/Remote
Analog control (J1-8) function and Setup switch SW1-1, 2 setting.
Output Voltage/
Current setting
Local
Remote
Local
SW1-1, 2 setting
Down (default)
Up
J1-8 function
No effect
“0” or Short
“1” or Open
Table 6-1: Local/Remote Analog control function
6.3 LOCAL/REMOTE ANALOG INDICATION
Contact 21 of J1 (Fig. 4-2, Item 5) is an open collector output that indicates if the power supply is
in Local mode or in Remote Analog mode. To use this output, connect a pull-up resistor to a volt-
age source of 30Vdc maximum. Choose the pull-up resistor so that the sink current will be less
than 5mA when the output is in a low state. Refer to table 6-2 for J1-21 function.
J1-8
SW1-1
SW1-2
J1-21 signal
Mode
TTL “0” or short
Down
Down
Down
Up
Open
0i0.6V
Local (FP)
Remote Ana-
log
Up
Up
Down
Up
0i0.6V
0i0.6V
Open
Remote Ana-
log
Remote Ana-
log
TTL “1” or open
Down or Up
Down or Up
Local (FP)
Table 6-2: Local/Remote Analog indication
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6.4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE AND OUTPUT
CURRENT LIMIT
CAUTION
To maintain the power supply isolation and to prevent ground loops, use an
isolated programming source when operating the power supply via remote
analog programming at the J1 connector.
Perform the following procedure to set the power supply to Remote Voltage programming:
1. Turn the power supply AC On/Off switch to Off.
2. Set setup switch SW1, positions 1 and 2 to their UP position.
3. Set SW1, position 3 to select the programming voltage range according to Table 6-3.
4. Ensure that SW1, positions 7 and 8 are at their DOWN (default) position.
5. Connect a wire jumper between J1-8 and J1-12 (refer to Table 4-4).
6. Connect the programming source to the mating plug of J1 as shown in Fig.6-1. Ob-
serve correct polarity for the voltage source.
7. Set the programming sources to the desired levels and turn the power supply ON. Ad-
just the programming sources to change the power supply output.
NOTES:
1. SW1, positions, 4, 5, 6 and 9 are not required for remote programming. Their settings
can be determined according to the application.
2. The control circuits allow the user to set the Output Voltage and Output Current up to
5% over the model-rated maximum value. The power supply will operate within the ex-
tended range, however it is not recommended to operate the power supply over its
voltage and current rating, and performance is not guaranteed.
SW1-3 setting Output Voltage programming Output Current programming
VPGM (J1-9)
IPGM (J1-10)
UP
0-10V
0-10V
DOWN
0-5V
0-5V
Table 6-3: SW1-3 setting and programming range
J1 connector, rear panel view
OUTPUT VOLTAGE
PROGRAMMING
OUTPUT CURRENT
PROGRAMMING
+
+
8
12
10
9
13
25
1
14
23
22
Fig.6-1: Remote voltage programming connection
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6.5 RESISITIVE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT LIMIT
For resistive programming, internal current sources, for Output Voltage and/or Output Current
control, supply 1mA current through external programming resistors connected between J1-9 &
22 and J1-10 & 23. The voltage across the programming resistors is used as a programming
voltage for the power supply. Resistance of 0i5Kohm or 0i10Kohm can be selected to program
the Output Voltage and Output Current from zero to full scale.
A variable resistor can control the output over its entire range, or a combination of variable resis-
tor and series/parallel resistors can control the output over restricted portion of its range.
Perform the following procedure to set the power supply to Resistive programming:
1. Turn the AC On/Off switch to Off.
2. Set setup switch SW1, positions 1 and 2 to their UP position.
3. Set SW1, position 3 to select the programming resistor range according to Table 6-4.
4. Set SW1, positions 7 and 8 to their UP position, to enable resistive programming mode.
5. Connect a wire jumper between J1-8 and J1-12 (refer to Table 4-4).
6. Connect the programming resistors to the mating plug of J1 as shown in Fig.6-2.
7. Set the programming resistors to the desired resistance and turn the power supply ON. Ad-
just the resistors to change the power supply output.
NOTES:
1. SW1, positions 4, 5, 6 and 9 are not required for remote programming. Their settings can be
determined according to the application requirements.
2. The control circuits allow the user to set the Output Voltage and Output Current up to 5%
over the model-rated maximum value. The power supply will operate within the extended
range, however it is not recommended to operate the power supply over its voltage and cur-
rent rating and performance is not guaranteed.
3. To maintain the temperature stability specification of the power supply, the resistors used for
programming should be stable and low noise resistors, with temperature coefficient of less
than 50ppm.
4. When resistive programming is used, front panel and computer control (via serial communi-
cation port) of Output Voltage and Current are disabled.
SW1-3 setting
Output Voltage programming Output Current programming
VPGM (J1-9)
0-10Kohm
0-5Kohm
IPGM (J1-10)
0-10Kohm
0-5Kohm
UP
DOWN
Table 6-4: SW1-3 setting and programming range
J1 connector, rear panel view
OUTPUT VOLTAGE
PROGRAMMING
OUTPUT CURRENT
PROGRAMMING
PROGRAMMING
RESISTOR
PROGRAMMING
RESISTOR
12
10
9
8
13
25
1
14
OPTIONAL SETS
LOWER LIMIT
OPTIONAL SETS
LOWER LIMIT
23
22
OPTIONAL SETS
UPPER LIMIT
OPTIONAL SETS
UPPER LIMIT
Fig.6-2: Remote resistive programming
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6.6 REMOTE MONITORING OF OUTPUT VOLTAGE AND CURRENT
The J1 connector, located on the rear panel provides analog signals for monitoring the Output
Voltage and Output Current. Selection of the voltage range between 0-5V or 0-10V is made by
setup switch SW1-4. The monitoring signals represent 0 to 100% of the power supply Output
Voltage and Output Current. The monitor outputs have 500 ohm series output resistance. Ensure
that the sensing circuit has an input resistance of greater than 500 Kohm or accuracy will be re-
duced.
Refer to Table 6-5 for the required J1 connection, SW1-4 setting and monitoring voltage range.
Signal
name
Signal function
J1 connection
Signal (+) Return (-)
Range SW1-4
VMON
IMON
VMON
IMON
Vout monitor
Iout monitor
Vout monitor
Iout monitor
J1-11
J1-12
J1-24
J1-11
J1-12
J1-24
0-5V
Down
Up
0-10V
Table 6-5 Monitoring signals setting
Notes:
1. Radiated emissions, RCC requirements: FCC requirements for radiated emissions; use a
shielded cable for the analog control signals. If using
unshielded cable, attach an EMI ferrite suppressor to
the cable, as close as possible to the power supply.
2. Front panel encoders operation:
3. Front panel PREV button:
4. Communication:
In Remote analog mode, the output voltage and cur-
rent can’t be set by the VOLTAGE and CURRENT
encoders.
Use the PREV button to display the Output Voltage
and Current setting, as defined by the encoders or
digital communication.
In Remote analog mode, all power supply parame-
ters can be programmed and readback via the
communication port, except the Output Voltage and
Current setting.
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CHAPTER 7 RS232 & RS485 REMOTE CONTROL
7.1 INTRODUCTION
This Chapter describes the operation of the GenesysTM 3300W power supplies via the serial
communication port. Details of the initial set-up, operation via RS232 or RS485, the command
set and the communication protocol are described in this Chapter.
7.2 CONFIGURATION
7.2.1 Default setting
The power supply is shipped with the following settings:
-Address
6
-Output
Off
-Baud-rate
-RS232/485
-Vout setting
-Iout setting
-Master/Slave
9600
RS232
0
Maximum
H1 (Master)
-Start up mode
-OVP
-UVL
-Foldback
-Front panel:
Safe-start
Maximum
0
Off
Unlocked (UFP)
7.2.2 Address setting
The power supply address can be set to any address between 0 and 30. Follow the instructions
described below to set the unit address.
1. If the unit is in Remote mode (front panel REM/LOC LED illuminated), press the REM/LOC
button to put the unit into Local mode.
2. Press and hold for the REM/LOC button for approximately 3 sec. The VOLTAGE display will
indicate the unit address.
3. Using the VOLTAGE adjust encoder, select the unit address.
To preview the power supply address at any time, press and hold the REM/LOC button for
approx. 3 sec. The VOLTAGE display will indicate the power supply address.
7.2.3 RS232 or RS485 selection
To select between RS232 or RS485 set the rear panel setup switch SW1-6 position to:
-DOWN for RS232
-UP for RS485
7.2.4 Baud Rate setting
Five optional Baud rates are possible: 1200, 2400, 4800, 9600 and 19200. To select the desired
rate, the following steps should be taken:
1. If the unit is in Remote mode (front panel REM/LOC LED illuminates), press REM/LOC button
to put the unit into Local mode.
2. Press and hold the REM/LOC button for approximately 3 sec. The CURRENT display will
show the unit Baud Rate.
3. Using the CURRENT adjust encoder, select the desired Baud Rate.
7.2.5 Setting the unit into Remote or Local mode
1. The unit will be put into Remote mode only via serial communication command. Commands
that will put the unit into Remote mode are:
RST
OUT n
RMT n
PV n
PC n
(for n values see Tables 7-5 and 7-7)
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2. There are two Remote modes:
1. Remote: In this mode, return to local can be made by the front panel REM/LOC or
via serial port command RMT 0. Set the unit into Remote mode via serial
port RMT 1 command.
2. Local Lockout: In this mode the unit can be returned to Remote mode via the serial port
RMT 1 command or by turning off the AC power until the display turns off,
and then turn it to on again. In local Lockout mode, the front panel
REM/LOC button is not active. Set the unit into Local Lockout mode via se-
rial port RMT 2 command.
7.2.6 RS232/RS485 port in Local mode
When the power supply is in Local mode, it can receive queries or commands. If a query is re-
ceived, the power supply will reply and remain in Local mode. If a command that affects the out-
put is received, the power supply will perform the command and change to Remote mode.
Serial commands may be sent to set the status registers and read them while the unit is in Local
mode. If the Enable registers are set (refer to Section 7.11) the power supply will transmit SRQ’s
while in Local.
7.2.7 Front panel in Remote mode
Front panel control in Remote mode is Disabled except for:
1. PREV: use to preview the Voltage and Current setting.
2. OVP/UVL: use to preview the OVP/UVL setting.
3. LOC/REM: use to set the unit into Local mode.
In Local Lockout mode, only the PREV and OVP/UVL pushbuttons are active.
7.3 REAR PANEL RS232/RS485 CONNECTOR
The RS232/RS485 interface is accessible through the rear panel RS232/RS485 IN and RS485
OUT connectors. The connectors are 8 contact RJ-45. The IN and OUT connectors are used to
connect power supplies in a RS232 or RS485 chain to a controller. Refer to Fig. 7-1 for IN/OUT
connectors.
SG
RX
TX
NC
+
-
RXD
TXD
NC
TXD
+
-
RXD
TXD
RXD
+
-
RXD
NC
+
-
TXD
NC
SG
Shield
(connector enclosure)
8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1
IN
OUT
Fig.7-1: Rear panel J3 IN/OUT connectors pinout
NOTE
Tx and Rx are used for RS232 communication. Txd +/- and Rxd +/- are used for RS485
communication. Refer to RS-232 and RS-485 cabling and connection details.
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7.4 MD MODE OPTION (Factory Installed)
7.4.1 MD Mode Description
The GEN supply is capable of operating in a multi drop environment - more than 1 supply con-
ducting serial communications on a single serial bus. A maximum of 31 GEN supplies can oper-
ate in this single bus. Upon power up the Gen will enter the point-to-point mode in which it is as-
sumed that only 1 supply will operate on a serial bus. MD Mode must be enabled - Ref. Section
7.10.2.2. The user must set all Slave supplies to a unique address. No two supplies may have
the same address.
7.4.2 MD Mode enable – Serial communication mode
Refer to section 7.10.2.2. MD Mode is entered into via a Single byte command. In MD Mode the
Master supply shall operate in one of the two serial modes, RS232 or RS485, depending upon
the rear panel DIP switch setting and the Slave supplies shall operate in the RS485 serial mode.
7.4.3 MD Mode SRQ
In MD Mode the SRQ generated by the supply is replaced by a single byte SRQ sent two times in
sequence. The SRQ byte, in binary, will contain the address of the supply in the least significant
5 bits with bits 5 and 6 set to logic zero and bit 7 set to logic 1. Ref. Table 7-4.
7.4.4 Communication Collisions
In MD Mode it is possible to have one supply issue an SRQ while another supply is transmitting
data/response to a command. When this happens, the HOST PC will receive garbled data and
assume that the data/response was corrupted and thus re-send the command - the SRQ will
probably be lost. The method of recovery will be SRQ retransmission, Ref. Section 7.4.5, or poll-
ing all attached supplies to see who issued the SRQ - available by reading the SEVE? Register.
7.4.5 MD Mode SRQ Retransmission
The supply can be commanded to retransmit the SRQ at regular intervals until it is answered to
by the HOST PC (Ref. Section 7.10.2.4). The retransmission interval is 10 ms plus the supply
address multiplied by 20 ms.
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7.5 CONNECTING POWER SUPPLIES TO RS232 OR RS485 BUS
7.5.1 Single power supply
1. Select the desired interface RS232 or RS485 using rear panel setup switch SW1-6 (Section 4-4).
-RS232: DOWN position
-RS485: UP position
2. Connect rear panel IN connector to the controller RS232 or RS485 port using a suitable
shielded cable. Refer to Figures 7-2, 7-3 and 7-4 for available RS232 and RS485 cables.
L=2m typ.
13
8
1
1
Sockets
DB-25 CONNECTOR
8 PIN CONNECTOR
REMARKS
NAME
SHIELD
TX
PIN NO.
PIN NO.
NAME
1
2
3
7
SHIELD
RX
TWISTED
PAIR
8
7
1
RX
TX
SG
SG
Fig.7-2: RS232 cable with DB25 connector (P/N: GEN/232-25)
L=2m typ.
5
1
8
1
Sockets
DB-9 CONNECTOR
REMARKS
8 PIN CONNECTOR
NAME
SHIELD
RX
PIN NO.
PIN NO.
HOUSING
NAME
HOUSING
SHIELD
TX
TWISTED
PAIR
2
3
5
7
8
1
TX
RX
SG
SG
Fig.7-3: RS232 cable with DB9 connector (P/N: GEN/232-9)
L=2m typ.
5
1
8
1
Sockets
8 PIN CONNECTOR
DB-9 CONNECTOR
REMARKS
PIN NO.
NAME
PIN NO.
NAME
HOUSING
HOUSING
SHIELD
SHIELD
-
RXD
RXD
SG
TXD
TXD
TWISTED
PAIR
-
9
8
1
5
4
6
3
1
5
4
+
+
SG
RXD
RXD
-
-
TXD
TXD
TWISTED
PAIR
+
+
Fig.7-4: RS485 cable with DB9 connector (P/N: GEN/485-9)
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7.5.2 Multi power supply connection to RS232 or RS485 bus
Up to 31 units can be connected (daisy chained) to the RS232 or RS485 bus. The first unit con-
nects to the controller via RS232 or RS485 and the other units are connected via the RS485 bus.
1. First unit connection: Refer to Section 7.5.1 for connecting the first unit to the controller.
2. Other units connection: The other units on the bus are connected via their RS485 interface.
Refer to Figure 7-5 for typical connection.
- Set rear panel setup switch SW1-6 to its UP position.
- Using the Linking cable supplied with each unit (refer to Fig. 7-6), connect each unit OUT
connector to the next unit IN connector.
RS485
RS485
RS232/RS485
RS485
IN
IN
OUT
OUT
IN
OUT
IN
OUT
POWER SUPPLY
#1
POWER SUPPLY
#2
POWER SUPPLY
#3
POWER SUPPLY
#31
Fig7-5: Multiple power supply RS232/485 connection
L=0.5m typ.
8
1
8
1
PIN NO.
HOUSING
NAME
SHIELD
SG
PIN NO.
HOUSING
1
6
3
5
4
NAME
SHIELD
SG
1
6
3
5
4
-
-
RXD
TXD
+
-
+
TXD
RXD
RXD
RXD
TXD
TXD
+
-
+
Serial link cable with RJ-45 shielded connectors (P/N: GEN/RJ-45)
Fig.7-6:
7.6 COMMUNICATION INTERFACE PROTOCOL
NOTE
The address (ADR n) command must return an “OK” response before
any other commands are accepted.
7.6.1 Data format
Serial data format is 8 bit, one start bit and one stop bit. No parity bit.
7.6.2 Addressing
The Address is sent separately from the command. It is recommended to add 100msec delay
between query or sent command to next unit addressing. Refer to Section 7.8.3 for details.
7.6.3 End of Message
The end of message is the Carriage Return character (ASCII 13). The power supply ignores the
Line Feed (ASCII 10) character.
7.6.4 Command Repeat
The backslash character “\” will cause the last command to be repeated.
7.6.5 Checksum
The user may add a checksum (optional) to the end of the command. The checksum is “$” fol-
lowed by two hex characters. If a command or a query has a checksum, the response will also
have one. There is no CR between the command string and the “$” sign.
Example: STT?3A
STAT?$7B
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7.6.6 Acknowledge
The power supply acknowledges received commands by returning an “OK” message. If an error
is detected the power supply will return an error message. The rules of checksum also apply to
the acknowledge.
7.6.7 Error message
If an error is detected in command or query, the power supply will respond with an error mes-
sage. Refer to Section 7.7 for details.
7.6.8 Backspace
The backspace character (ASCII 8) clears the last character sent to the power supply.
7.7 ERROR MESSAGES
The power supply will return error messages for illegal commands and illegal programming pa-
rameters. Refer to Table 7-1 for programming error messages and Table 7-2 for command error
messages.
Table 7-1: Programming error messages
Error
Description
Code
E01
Returned when program voltage (PV) is programmed above acceptable range.
Example: PV above ‘105% of supply rating’ or PV above 95% of OVP setting’.
Returned when programming output voltage below UVL setting.
E02
E04
Returned when OVP is programmed below acceptable range.
Example: OVP less than “5% of supply voltage rating’ plus ‘voltage setting’.
Returned when UVL is programmed above the programmed output voltage.
E06
E07
Returned when programming the Output to ON during a fault shut down.
Table 7-2: Commands error messages
Error
Description
Code
Illegal command or query
C01
C02
C03
C04
C05
Missing parameter
Illegal parameter
Checksum error
Setting out of range
7.8 COMMAND SET DESCRIPTION
7.8.1 General guide
1. Any command or argument may be in capital letters or small letters.
2. In commands with an argument, a space must be between the command and the argument.
3. For any command that sets a numeric value, the value may be up to 12 characters long.
4. Carriage Return: If the CR character (ASCII 13) is received by itself, the power supply will
respond with “OK” and CR.
7.8.2 Command set categories
1. Initialization control
2. ID control
3. Output control
4. Status control
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7.8.3 Initialization Control Commands
#
Command
Description
ADR is followed by address, which can be 0 to 30 and is used to access the
power supply.
1
ADR n
Clear status. Sets FEVE and SEVE registers to zero (refer to Section 7-11).
2
3
CLS
RST
Reset command. Brings the power supply to a safe and known state:
Output voltage: zero, Remote: non-lockout remote,
Output current: zero,
Output: Off,
FOLD: Off,
Auto-start: Off,
OVP: maximum,
UVL: zero
The conditional registers (FLT and STAT) are updated, the other registers
are not changed.
Sets the power supply to local or remote mode:
4
5
RMT
1. RMT 0 or RMT LOC, sets the power supply into Local mode.
2. RMT 1 or RMT REM, sets the unit into remote mode.
3. RMT 2 or RMT LLO, sets the unit into Local Lockout mode (latched remote
mode).
Returns to the Remote mode setting:
1. “LOC” - The unit is in Local mode.
RMT?
2. “REM” - The unit is in Remote mode.
3. “LLO” - The unit is in Local Lockout (latched remote) mode.
Returns MD MODE OPTION Status. 1 indicates installed and 0 indicates not
installed.
Repeat last command. If \<CR> is received, the power supply will repeat the
last command.
6
7
MDAV?
\
7.8.4 ID Control Commands
#
Command
Description
Returns the power supply model identification as an ASCII string:LAMBDA,
GENX-Y
1
IDN?
2
3
4
REV?
SN?
Returns the software version as an ASCII string.
Returns the unit serial number. Up to 12 characters.
Returns date of last test. Date format: yyyy/mm/dd
DATE?
7.8.5 Output Control Commands
#
Command
Description
Sets the output voltage value in Volts. The range of voltage value is de-
scribed in Table 7-5. The maximum number of characters is 12. See the fol-
lowing examples for PV n format: PV 12, PV 012, PV 12.0, PV 012.00, etc…
Reads the output voltage setting. Returns the string “n” where “n” is the ex-
act string sent in the PV n command. When in Local mode, returns the
PREVIEW (front panel) settings in a 5 digit string.
1
PV n
2
3
PV?
MV?
Reads the actual output voltage. Returns a 5 digits string.
Example: 60V supply sends 01.150, 15.012, 50.000, etc…
Set the Output Current value in Amperes. The range of current values is de-
scribed in Table 7.6. The maximum number of characters is 12. See the fol-
lowing examples for PC n format: PC n format: PC 10, PC 10.0, PC 010.00,
etc…
Reads the Output Current setting. Returns the string “n” where “n” is the ex-
act string sent in the PC n command. When in Local mode, returns the
PREVIEW (front panel) settings in a 5 digit string.
PC n
(See
Note 1)
4
5
PC?
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MC? (See Reads the actual Output Current. Returns a 5 digit string.
6
7
Note 2)
Example: 200A supply sends 000.50, 110.12, 200.00, etc…
Display Voltage and Current data. Data will be returned as a string of ASCII
characters. A comma will separate the different fields. The fields, in order,
are: Measured Voltage, Programmed Voltage, Measured Current, Pro-
grammed Current, Over Voltage Set Point and Under Voltage Set Point.
Example: 5.9999,6.0000,010.02,010.00,7.500,0.000
DVC?
FILTER
nn
FILTER?
Set the low pass filter frequency of the A to D Converter for Voltage and Cur-
rent Measurement where nn = 18, 23 or 46.
Returns the A to D Converter filter frequency: 18,23 or 46 Hz.
Turns the output to ON or OFF. Recover from Safe-Start, OVP or FLD fault.
OUT 1 (or OUT ON)-Turn On.
8
9
10 OUT n
OUT 0 (or OUT OFF)-Turn Off
Returns the output On/Off status string.
11 OUT?
12 FLD n
ON - output On.
OFF - output Off.
Sets the Foldback protection to ON or OFF.
FLD 1 (or FOLD ON) - Arms the Foldback protection
FLD 0 (or FOLD OFF) - Cancels the Foldback protection.
When the Foldback protection has been activated, OUT 1 command will re-
lease the protection and re-arm it, while FLD 0 will cancel the protection.
Returns the Foldback protection status string:
13 FLD?
“ON” - Foldback is armed. “OFF” - Foldback is cancelled.
Add (nn x 0.1) seconds to the Fold Back Delay. This delay is in addition to
the standard delay. The range of nn is 0 to 255. The value is stored in eprom
at AC power down and recovered at AC power up.
14 FBD nn
15 FBD ?
Supply returns the value of the added Fold Back Delay.
Reset the added Fold Back Delay to zero.
16 FBDRST
Sets the OVP level. The OVP setting range is given in Table 7-7. The num-
ber of characters after OVP is up to 12. The minimum setting level is ap-
proximately 105% of the Output Voltage setting, or the value in Table 7-7,
whichever is higher. The maximum OVP setting level is shown in Table 5-1.
Attempting to program the OVP below this level will result in an execution
error response (“E04”). The OVP setting stays unchanged.
17 OVP n
18 OVP?
Returns the setting “n” where “n” is the exact string in the user’s “OVP n”.
When in Local mode, returns the last setting from the front panel in a 4 digit
string.
19 OVM
Sets OVP level to the maximum level. Refer to Table 7-7.
Sets Under Voltage Limit. Value of “n” may be equal to PV setting, but re-
turns “E06” if higher. Refer to Table 7-8 for UVL programming range.
20 UVL n
Returns the setting “n” where “n” is the exact string in the user’s “UVL n”.
When in Local mode, returns the last setting from the front panel in a 4 digit
string.
21 UVL?
Sets the Auto-restart mode to ON or OFF.
AST 1 (or AST ON): Auto restart On.
AST 0 (or AST OFF): Auto restart Off.
22 AST n
23 AST?
24 SAV
Returns the string auto-restart mode status.
Saves present settings. The settings are the same as power-down last set-
ting. These settings are erased when the supply power is switched Off and
the new “last settings” are saved.
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Recalls last settings. Settings are from the last power-down or from the last
“SAV” command.
25 RCL
Returns the power supply operation mode. When the power supply is On
(OUT 1) it will return “CV” or “CC”. When the power supply is OFF (OUT 0 or
fault shutdown) it will return “OFF”.
26 MODE?
27 MS?
Returns the Master/Slave setting. Master: n= 1, 2, 3, or 4 Slave: n=0
NOTES:
1. In Advanced parallel mode (refer to Sec. 5.15.2), “n” is the total system current.
2. In Advanced parallel mode, “MC?” returns the Master unit current multiplied by the number of
slave units +1.
7.9 GLOBAL OUTPUT COMMANDS
7.9.1 GENERAL
All supplies, even if not the currently addressed supply, receiving a global command will execute
the command. No response to the PC issuing the command will be returned to the PC. The PC
issuing the command will be responsible to delay and any other communications until the com-
mand is execute. 200 Ms minimum is the suggested delay.
If the command contains an error, out of range values for example, no error report will be sent to
the issuing PC.
Table 7-3
GRST
Reset. Brings the power supply to a safe and known state:
Output voltage: 0V, output current: 0A, OUT: Off, Remote: RMT 1,
AST: Off
OVP: Max,
UVL: 0.
The conditional register (FLT and STAT) are updated. Other registers are not
changed.
Non-Latching faults (FB, OVP, SO) are cleared, OUT fault stays
GPV n
GPC n
GOUT
Sets the output voltage value in volts. The range of voltage values is shown in
Table 7-5. ‘n’ may be up to 12 char plus dec. pt
Program the output current value in amperes. The range of current values is
shown in Table 7-6. ‘n’ may be up to 12 char plus dec. pt
Turns the output to ON or OFF:
“OUT 1/ON” = turn on
“OUT 0/OFF” = turnoff, clears CV and CC bits in the Status Condition (STAT).
OUT ON will respond with “E07’ if the output cannot be turned on because of a
latching fault (OTP< AC, ENA, SO) shutdown.
Save present settings. Same settings as power-down last settings listed in Er-
ror!
Reference source not found. Except the address and Baud rate are not saved
Saves to the RAM. These settings are erased when the supply power is
switched off and the new ‘last settings’ are saved.
GSAV
GRCL
Recall last settings. Settings are from last power-down or from last ‘SAV’ or
‘GSAV’ command. Address and Baud rate are not recalled so communication is
not interrupted.
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7.10 SINGLE BYTE COMMANDS
7.10.1 General
Single byte commands are commands in which all the necessary data for the supply to act upon
is contained in a single byte. Single byte commands will be executed immediately by the supply.
If the command requires data to be sent to the HOST PC or IEEE Board (see sections 7.10.4
and 7.10.3.1) that response will be transmitted immediately with no delay due to any software
overhead. With the exception of the Disconnect from communications command, section
7.10.3.1, commands must be sent by the HOST PC or IEEE Board 2 times in sequence for verifi-
cation. Alll have the most significant bit, D7, set to a logic 1. A CR, carriage return, character is
not included in a single byte command. The RST command will not change any setting made by
a single byte command.
All Single Byte commands will be executed in 1 ms or less. This does not include any response
sent to the HOST/IEEE Board, which is dependent upon the response length and the serial
transmission speed (Baud rate).
7.10.2 Global commands without response
7.10.2.1 Disable MD Mode (MD MODE OPTION REQUIRED)
Disable is the default condition upon power up. The Hex value of the command is 0xA0. Send it
two times in sequence. All supplies, both the currently addressed supply and all non-addressed
supplies, will disable MD Mode as a result of this command.
7.10.2.2 Enable MD Mode (MD MODE OPTION REQUIRED)
Send to enable Multi Drop Mode. The Hex value of the command is 0xA1. Sent it two times in
sequence. When this command is sent, the supply will set SRQ retransmission to the disable
state; if you wish it to be enabled you must send the enable command. All supplies, both the cur-
rently addressed supply and all non-addressed supplies, will enable MD Mode as a result of this
command.
7.10.2.3 Disable SRQ retransmission (MD MODE OPTION REQUIRED)
Disable is the default condition upon power up. The Hex value of the command is 0xA2. Sent it
two times in sequence. If the supply sends an SRQ it will only sent it 1 time. All supplies, both the
currently addressed supply and all non-addressed supplies, will disable SRQ retransmission as a
result of this command. All status registers will retain their data when this command is sent.
7.10.2.4 Enable SRQ retransmission (MD MODE OPTION REQUIRED)
Enable retransmission of SRQs. This is only available when the Multi Drop Mode is enabled in
the supply. The Hex value of the command is 0xA3. Send it two times in sequence. If the supply
sends an SRQ it will be repeated on a timely basis, 10 ms plus 20 ms times the supply address,
until answered. All supplies, both the currently addressed supply and all non-addressed supplies,
will enable SRQ retransmission as a result of this command.
7.10.2.5 Enable FLT Bit in the SENA Register
The Hex value of the command is 0xA4. Send it two times in sequence.
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7.10.3 Global commands with response
7.10.3.1 Disconnect from communications
Command the supply to end all data transmissions to the HOST PC/IEEE Board and cease its
role as the active addressed supply. The HOST PC/IEEE Board will be required to re-send the
‘ADR nn’ command to reestablish communications with the supply. After receiving the first com-
mand the supply will respond with an OK<CR>. The Hex value of the command is 0xBF. All sup-
plies, both the currently addressed supply and all non-addressed supplies, will respond to this
command; but only the currently addressed supply (if any) will respond with the ‘OK’.
7.10.4 Addressed commands with response
7.10.4.1 Read registers
Send (0x80 + Address) (1 byte binary - send 2 times sequentially). The supply will return the con-
tents of the Status Condition Register, the Status Enable Register, the Status Event Register
(SEVE?), the Fault Condition Register, the Fault Enable Register and the Fault Event Register
IFEVE/). All registers will be represented in two Hex bytes. Following the register data, a single
dollar sign, $, will be added to signal the end of data and the start of a checksum. The checksum
will be the sum of all register data and will be represented in two Hex bytes. The transmission will
end with the CR character. If repetitive sending of SRQs was active and the supply was sending
them, the supply will stop sending repetitive SRQs but leave the function active. The contents of
the registers will not be destroyed. Note that the supply does snot have to be the active ad-
dressed supply.
Note that this command will not execute if another command is being processed.
7.10.4.2 Print Power On Time
Print the total time the supply has operated under AC power. Send 2 bytes in sequence, A6 Hex
and the address of the supply in binary. A 32 bit integer will be returned in 8 Hex bytes. The data
will be the number of minutes that power has been ‘ON’ in the supply in binary. A ‘$’ sign and 2
byte Hex checksum will be appended to the data. There is no method provided to reset this num-
ber.
Retransmit last message.
Send (0xC0 + Address) (1 byte binary - send 2 times sequentially). The supply will return the last
message sent. Note that the supply does not have to be the active addressed supply.
This command will not execute if another command is being processed.
Note that Single byte commands do not load data into the supply’s data output buffer.
Thus this command will not cause the supply to retransmit data obtained from any previous
Single Byte Command.
7.10.4.3 Retransmit Last Message
Send (0xC0 + Address) (1 byte binary - send 2 times sequentially). The supply will return the last
message sent. Note that the supply does not have to be the active addressed supply.
This command will not execute if another command is being processed.
Note that Single byte commands do not load data into the supply’s data output buffer. Thus this
command will not cause the supply to retransmit data obtained from any previous Single Byte
Command.
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7.10.4.4 Test if MD Mode is Installed
Send AA Hex followed by the address of the supply in binary. If not installed, the supply will re-
turn a ‘1’. If installed, the supply will return a ‘0’.
7.10.5 Addressed commands without response
7.10.5.1 Acknowledge SRQ
Send (0xE0 + Address) (1 byte binary - send 2 times sequentially). The supply will stop re-
sending SRQ. If Enable SRQ retransmission is active, it will remain active.
7.10.5.2 Re-enable SRQ with out reading/clearing the SEVE Register
Send A5 Hex followed by the address of the supply in binary and new SRQ’s generated by new
events in the Fault Event will be enabled without reading and clearing the Status Event Register.
All events previously recorded in the Fault Event Register must have been serviced by the user’s
software prior to this command to take effect.
Name
Bit Positions
Response
Description
Global
Commands
Disable MD Mode
1010 0000
None
Set supplies out of MD Mode (de-
fault)
Enable MD Mode
1010 0001
1010 0010
None
None
Set supplies into MD Mode
Disable SRQ
retransmission
Enable SRQ
Disable retransmission of SRQs
by supplies (default)
Enable retransmission of SRQs by
supplies
1010 0011
1010 0100
None
None
retransmission
Enable FLT Bit
Enable the FLT bit in the SENA
Register
Disconnect serial
communications
All supplies will halt transmission
and enter the non-addressed
state.
1011 1111
OK
Addressed
Commands
Read Registers
100x xxxx
Register data Non destructive read of all regis-
ter. x xxxx is the address of the
supply in binary.
Byte 1
1010 0101
Byte 2
Re-enable SRQ without reading or
clearing the SEVE Register. xxxx
xxxx is the address of the supply
in binary. Works only in MD Mode.
Re-enable SRQ
None
xxxx xxxx
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Byte 1
1010 0110
Byte 2
Read the time the supply is active
under AC Power. xxxx xxxx is the
address of the supply in binary.
Returns a 32 Bit integer as 8 Hex
bytes. A ‘$’ sign is appended to
the data followed by a 2 byte
check-sum. A total of 11 bytes are
returned.
Print Power On
Time
Power On
time in min-
utes
xxxx xxxx
110x xxxx
111x xxxx
Retransmit last response from a
command. x xxxx is the address of
the supply in binary.
Acknowledge SRQ. If retransmis-
sion of SRQ is enabled, it will re-
main enabled for the next SRQ. X
xxxx is the address of the supply
in binary.
Retransmit last
message
Last message
None
Acknowledge
SRQ
Byte 1
1010 1010
Byte 2
Returns a 0 if not installed or a 1 if
installed. A ‘$’ sign followed by a 2
bytes checksum and Carriage Re-
turn is appended to the data. xxxx
xxxx is the address of the supply
in binary.
Test if MD Mode
is Installed
0 or 1
xxxx xxxx
Supply Initiated
Communications
SRQ
100x xxxx
SRQ from supply when in MD
Mode. X xxxx is the address of the
supply in binary.
N/A
Table 7-4. SINGLE BYTE COMMUNICATIONS
GEN750W models
Table 7-5: Current programming range
Model
Minimum
(A)
Maximum
(A)
GEN6-100
GEN8-90
000.00
00.00
100.00
90.00
GEN12.5-60
GEN20-38
GEN30-25
GEN40-19
GEN60-12.5
GEN80-9.5
GEN100-7.5
GEN150-5
GEN300-2.5
GEN600-1.3
00.000
00.000
00.000
00.000
00.000
0.000
60.000
38.000
25.000
19.000
12.500
9.500
0.000
7.500
0.000
5.000
0.000
2.500
0.000
1.300
NOTE:
The power supply can accept values 5% higher than the table values, however it is not
recommended to program the power supply over the rated values.
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Table 7-6: OVP programming range
Table 7-7: UVL programming range
Model
Minimum
(V)
Maximum
(V)
Model
Minimum
(V)
Maximum
(V)
Rated Output Voltage
(V)
Rated Output Voltage
(V)
6
8
12.5
20
30
40
60
80
100
150
300
600
0.5
0.5
1.0
1.0
2.0
2.0
5.0
5.0
5.0
5.0
5.0
5.0
7.50
10.0
15.0
24.0
36.0
44.0
66.0
88.0
110.0
165.0
330.0
660.0
6
8
12.5
20
30
40
60
80
100
150
300
600
0
0
0
0
0
0
0
0
0
0
0
0
5.70
7.60
11.9
19.0
28.5
38.0
57.0
76.0
95.0
142
285
570
7.10.6 Status Control Commands
Refer to Section 7-8 for definition of the registers.
#
1
Command
STT?
Description
Reads the complete power supply status.
Returns ASCII characters representing the following data, separated by commas:
MV<actual (measured) voltage>
PV<programmed (set) voltage>
MC<actual (measured) current>
PC<programmed (set) current>
SR<status register, 2-digit hex>
FR<fault register, 2-digit hex>
Example response: MV(45.201),PV(45), MC(4.3257), PC(10), SR(30), FR(00)
Reads Fault Conditional Register. Returns 2-digit hex.
Set Fault Enable Register using 2-digit hex.
2
3
4
5
6
7
8
9
FLT?
FENA
FENA?
FEVE?
STAT?
SENA
SENA?
SEVE?
Reads Fault Enable Register. Returns 2-digit hex.
Reads Fault Event Register. Returns 2-digit hex. Clears bits of Fault Event Register.
Reads Status Conditional Register. Returns 2-digit hex.
Sets Status Enable Register using 2-digit hex.
Reads Status Enable Register. Returns 2-digit hex.
Reads Status Event register. Returns 2-digit hex. Clears bits of Status Event register.
7.11 STATUS, ERROR AND SRQ REGISTERS
7.11.1 General Description
This Section describes the various status error and SRQ registers structure. The registers can be
read or set via the RS232/RS485 commands. When using the IEEE option, refer to the User’s
Manual for GenesysTM Power Supply IEEE Programming Interface.
Refer to Fig. 7-7 for the Status and Error Registers Diagram.
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Command Error (”Cnn”)
Execution Error (”Enn”)
One response for every command
or query received.
Response
messages
Query Response (”message”)
Command Response (”OK”)
Status Registers
Serial
TXD
Condition
Event
Enable
LSB
0
1
Constant Voltage
Constant Current
No Fault
CV
CV
CC
NFLT
FLT
0
“Inn” and CR
CC
2
NFLT
3
Fault
FLT
4
SRQ
Auto Start
0
0
0
Messages
AST
FDE
5
6
Fold Enabled
Spare
Local Mode
0
0
One SRQ when SEVE goes
from all zeroes to any bit set.
Setting more SEVE bits does
notcausemoreSRQs.
0
MSB
7
LCL
LCL
“SENA xx”
“SENA?”
“STAT?”
“SEVE?”
Positive Logic:
0 = No Event
1 = Event Occured
Fault Registers
Condition
Event
Enable
LSB
0
1
2
3
4
Spare
AC Fail
0
AC
0
AC
Over Temperature
Foldback (tripped)
Over Volt Prot
Shut Off (rear panel)
Output Off (front panel)
Enable Open
OTP
FLD
OVP
SO
OFF
ENA
OTP
FLD
OVP
SO
OFF
ENA
5
6
MSB
7
“FENA xx”
“FENA?”
“FLT?”
“FEVE?”
Fig.7-7: Status and Error Registers Diagram
7.11.2 Conditional Registers
The fault Condition Register and the Status Condition Register are read only registers that the
user may read to see the condition of the Power supply. Refer to Table 7-8 for description of the
Fault Condition Register bits and Table 7-9 for the Status Condition register bits.
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7.11.2 Conditional Registers (continued)
Table 7-8: Fault Condition Register
BIT
Fault name Fault symbol
Bit Set condition
Fixed to zero
Bit Reset condition
0 (LSB) Spare bit
SPARE
AC
Fixed to zero
1
2
AC Fail
AC fail has occurred.
The AC input returns to normal.
The power supply cools down.
Over
OTP
OTP shutdown has
occurred.
temperature
3
4
Foldback
FOLD
SO
Foldback shutdown
has occurred
The supply output is turned On by front
panel button or OUT 1 command.
Over
age
volt- OVP
OVP shutdown has
occurred.
The supply output is turned ON by
front panel button or OUT 1 command.
5
6
Shut Off
Rear panel J1 “Shut
Off” condition has oc-
curred.
Rear panel J1 “Shut Off” condition has
been removed.
Output Off
OFF
ENA
Front panel OUT but-
ton pressed to Off.
The supply output is turned On by front
panel button or OUT 1 command.
7(MSB) Enable
Rear panel J1 Enable Rear panel J1 Enable terminals
terminal (J1-1&J1-14) closed.
opened.
Table 7-9: Status Condition Register
BIT Fault name Fault symbol
Bit Set condition
Bit Reset condition
0 (LSB) Constant
Voltage
CV
Output is On and the Output is ON and the supply is not in
supply in CV.
CV.
1
Constant
Current
CC
Output is ON and the
supply in CC.
Output is ON and the supply is not in
CC.
The power supply is
operating normally or
fault reporting is not
enabled.
2
No Fault
NFLT
One or more faults are active and fault
reporting is enabled (using “FENAxx”).
See “OUT n” com-
mand in Section 7.7.5.
3
4
Fault active
FLT
One or more faults
are enabled and oc-
cur.
Fault Event Register cleared (FEVE?).
Auto-Restart AST
Enabled
Supply is in Auto-
Restart mode (from
Front Panel or serial
command).
Supply is in Safe-Start mode (from
Front Panel or serial command).
5
6
Fold
Enabled
FDE
Fold protection is
enabled (from Front
Panel or serial
command).
Fold protection disabled (from Front
Panel or serial command).
Spare bit
SPARE
LCL
Fixed to zero.
Fixed to zero.
7(MSB) Local Mode
Supply in Local mode. Supply in Remote mode or Local-
Lockout mode.
7.11.3 Service Request: Enable and Event Registers
The conditional Registers are continuously monitored. When a change is detected in a register
bit which is enabled, the power supply will generate an SRQ message.
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The SRQ message is: “Inn” terminated by CR, where the nn is the power supply address. The
SRQ will be generated either in Local or Remote mode.
Refer to Tables 7-10 to 7-13 for details of the Enable and Event registers.
1. Fault Enable Register
The Fault Enable Register is set to the enable faults SRQs.
Table 7-10: Fault Enable Register
Enable
BIT
Fault symbol
SPARE
AC
Bit Set condition
Bit reset condition
bit name
0 (LSB) Spare bit
1
2
3
4
5
6
AC Fail
User command: “FENA nn”
where nn is hexadecimal (if
nn=”00”, no fault SRQs will
be generated).
User command:
“FENA nn” where
nn is hexadecimal
Over Temperature OTP
Foldback
FOLD
OVP
SO
Over Voltage
Shut Off
Output Off
OFF
ENA
7(MSB) Enable
2. Fault Event Register
The Fault Event will set a bit if a condition occurs and it is Enabled. The register is cleared when
FEVE?, CLS or RST commands are received.
Table 7-11: Fault Event Register
Enable
BIT
Fault symbol
SPARE
AC
Bit Set condition
Bit reset condition
bit name
0 (LSB) Spare bit
1
2
3
4
5
6
AC Fail
Entire Event Register is
cleared when user sends
“FEVE?” command to read
the register.
“CLS” and power-up also
clear the Fault Event Reg-
ister. (The Fault Event
Register is not cleared by
RST)
Fault condition
occurs and it is
enabled.
The fault can set a
bit, but when the
fault clears the bit
remains set.
Over Temperature OTP
Foldback
FOLD
OVP
SO
Over Voltage
Shut Off
Output Off
OFF
ENA
7(MSB) Enable
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3. Status Enable Register
The Status Enable Register is set by the user to Enable SRQs for changes in power supply
status.
Table 7-12: Status Enable Register
Status
BIT
Status name
Bit Set condition
Bit reset condition
symbol
User command: “SENA
nn” is received, where nn
is hexadecimal bits.
If “nn”=00, no SRQ is sent
when there is a change in
Status Condition Register.
0 (LSB)
CV
Constant Voltage
Constant Current
No Fault
User command:
“SENA nn” is
received, where
nn is hexadeci-
mal bits.
1
2
3
CC
NFLT
FLT
Fault active
4
AST
Always zero
Always zero
Auto-Restart enabled
5
6
FDE
Always zero
Always zero
Always zero
Always zero
Fold enabled
Spare
Spare
“SENA nn”
command
“SENA nn”
command
7 (MSB)
LCL
Local Mode
4. Status Event Register
The Status Event Register will set a bit if a change in the power supply status occurs and it is en-
abled. The register is cleared when the “SEVE?” or “CLS” commands are received. A change in
this register will generate SRQ.
Table 7-13: Status Event Register
Status sym-
BIT
Status name
Bit Set condition
Bit reset condition
bol
Changes in status
occur and it is
Enabled.
The change can
set a bit, but
when the change
clears the bit re-
mains set.
0 (LSB)
CV
CC
Constant Voltage
1
2
3
Constant Current
No Fault
NFLT
FLT
Entire Event Register is
cleared when user sends
“SEVE?” command to
read the register.
“CLS” and power-up also
clear the Status Event
Register.
Fault active
Auto-Restart en-
abled
4
0
Always zero
5
6
0
0
Always zero
Always zero
Fold enabled
Spare
Unit is set to Lo-
cal by pressing
front panel
7 (MSB)
LCL
Local Mode
REM/LOC button.
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7.12 SERIAL COMMUNICATION TEST SET-UP
Use the following instructions as basic set-up to test the serial communication operation.
1.Equipment: PC with Windows Hyper Terminal, software installed, GenesysTM
Power supply, RS232 cable.
2. PC set-up: 2.1 Open Hyper Terminal…………………….New Connection.
2.2 Enter a name
2.3 Connect to…………………………………Direct to Com 1 or Com 2
2.4 Configure port properties:
Bits per second……9600
Data bits……………8
Parity……………….None
Stop bits……………1
Flow control……….None
2.5 Open Properties in the program
2.6 Setting: ASCII Set Up
File………………….Properties
Select Echo characters locally, select send line ends with line feed.
On some PC systems, pressing the number keypad “Enter” will dis-
tort displayed messages. Use the alphabetic “Enter” instead.
3. Power supply set-up:
3.1 Connect the power supply to the PC using the RS232 cable.
3.2 Set via the front panel: Baud Rate: 9600, Address: 06 (default).
3.3 Set via the rear panel: RS232/RS485 to RS232 (refer to Section 4-4).
4. Communication Test:
4.1 Model identification:
PC:write: ADR 06
Power supply response: “OK”
4.2 Command test:
PC write: OUT1
Power supply response: “OK”
PC write: PVn
Power supply response: “OK”
PC write: PCn (for values of n see Tables 7-4, 7-5 and 7-6)
Power supply response: “OK”
The power supply should turn on and the display will indicate the actual Output
Voltage and the actual Output Current.
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CHAPTER 8 ISOLATED ANALOG PROGRAMMING OPTION
8.1 INTRODUCTION
Isolated Analog Programming is an internal Option Card for analog programming of the Gene-
sysTM power supply series. The option is factory installed and cannot be obtained with a GPIB
(IEEE-488) Interface. Output Voltage and Output Current can be programmed and readback
through optically isolated signals which are isolated from all other ground references in the power
supply.
There are two types of Isolated Analog programming cards:
1. 0-5V/0-10V option (PN: IS510): Using 0-5V or 0-10V signals for programming and read-
back.
2. 4-20mA option (PN: IS420): Using current signals for programming and readback.
8.2 SPECIFICATIONS
8.2.1 0-5V/0-10V OPTION (PN: IS510)
Programming Output Voltage programming accuracy
%
%
+/-1
+/-1
Inputs
Output Current programming accuracy
Output Voltage programming temperature coefficient
PPM/°C
PPM/°C
Ohm
Vdc
+/-100
+/-100
1M
Output Current programming temperature coefficient
Input impedance
Absolute maximum voltage
0-15
600
Max. voltage between program inputs and supply outputs
Output Voltage monitoring accuracy
Output Current monitoring accuracy
Output Impedance (see Note)
Vdc
Monitoring
Outputs
%
+/-1.5
+/-1.5
100
%
Ohm
Vdc
Max. voltage between monitoring outputs and supply
600
NOTE:
Use 100Kohm minimum input impedance for the monitoring circuits to minimize the readback
error.
8.2.2 4-20mA option (PN: IS420)
Programming Output Voltage programming accuracy
%
%
+/-1
+/-1
Inputs
Output Current programming accuracy
Output Voltage programming temperature coefficient
PPM/°C
PPM/°C
Ohm
Vdc
+/-200
+/-200
50
Output Current programming temperature coefficient
Input impedance
Absolute maximum input current
0-30
600
Max. voltage between program inputs and supply outputs
Output Voltage monitoring accuracy
Output Current monitoring accuracy
Maximum load impedance
Vdc
Monitoring
Outputs
%
+/-1.5
+/-1.5
500
%
Ohm
Vdc
Max. voltage between monitoring outputs and supply
600
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8.3 ISOLATED PROGRAMMING & MONITORING CONNECTOR
Refer to Table 8-1 for detailed description of the rear panel Isolated Programming & Monitoring
connector. To provide the lowest noise performance, it is recommended to use shielded-twisted
pair wiring.
Refer to Fig.8-1 for description of the Isolated Analog Programming & Monitoring connector.
Isolated programming plug P/N: MC1.5/8-ST-3.81, Phoenix.
1
3
6
8
2
5
7
4
Shield
Shield
+VPROG_ISO
+IMON_ISO
+VMON_ISO
GND_ISO
+IPROG_ISO
GND_ISO
Fig.8-1: Isolated Programming & Monitoring connector
Table 8-1: Detailed description of Isolated programming & Monitoring connector
Range 0-5/0-
Range 4-
20mA IS420
option
Terminal
Signal name
Function
10V
IS510 option
Shield, connected internally to
chassis of the power supply.
1
2
3
SHLD
Chassis ground
Output Voltage programming
input
+VPROG_ISO
+IPROG_ISO
0-5V/0-10V
0-5V/0-10V
4-20mA
4-20mA
Output Current programming
input
Ground for programming sig-
nals.
4
5
GND
GND
Ground
Ground
Ground
Ground
Ground for programming sig-
nals.
Output voltage monitoring out-
put
6
7
8
+VMON_ISO
+IMON_ISO
SHLD
0-5V/0-10V
0-5V/0-10V
4-20mA
4-20mA
Output current monitoring out-
put
Shield, connected internally to
chassis of the supply.
Chassis ground
CAUTION
When the Isolated Analog Option is installed, do not apply any signals to the
non-isolated VPGM and IPGM (J1-9 and J1-10) pins. All other J1 features may
be used normally. Refer to Section 4.5 for a description of J1 features.
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8.4 SETUP AND OPERATING INSTRUCTIONS
CAUTION
To prevent damage to the unit, do not program the output voltage and
current to higher than the power supply rating.
8.4.1 Setting up the power supply for 0-5V/0-10V Isolated Programming and Monitoring
Perform the following procedure to configure the power supply:
1. Turn the power supply AC power switch to Off.
2. Connect a wire jumper between J1-8 and J1-12 (refer to Table 4-4).
3. Set the Setup switch SW1, positions 1 and 2 to the UP position.
4. Set SW1, position 3 to select the Programming Voltage Range: Down=0-5V, Up=0-10V.
5. Set SW1, position 4 to select the Monitoring Range: Down=0-5V, Up=0-10V.
6. Ensure that SW1, positions 7 and 8 are in the Down position.
7. Connect the programming sources to the mating plug of the Isolated Programming connec-
tor. Observe for correct polarity of the voltage source.
NOTE
J1-8 and J1-12 must be shorted together with a wire jumper.
8. Set the programming sources to the desired levels and turn the power supply ON.
8.4.2 Setting up the power supply for 4-20mA Isolated Programming and Monitoring
Perform the following procedure to configure the power supply:
1. Turn the power supply AC power switch to Off.
2. Connect a wire jumper between J1-8 and J1-12 (refer to Table 4-4).
3. Set the Setup switch SW1, positions 1 and 2 to the Up position.
4. Set SW1, position 3 to the Up position.
5. Set SW1, position 4 to the Up position.
6. Ensure that SW1 positions 1 and 2 to their Up position.
7. Connect the programming source to the mating plug of the Isolated Programming connector.
Observe for correct polarity of the voltage source.
NOTE
J1-8 and J1-12 must be shorted together with a wire jumper.
8. Set the programming sources to the desired levels and turn the power supply ON.
NOTE
SW1 position 3 and 4 must be in the Up position for operation
with 4-20mA Isolated Programming and Monitoring.
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CHAPTER 9 MAINTENANCE
9.1 INTRODUCTION
This Chapter provides information about maintenance, calibration and troubleshooting.
9.2 UNITS UNDER WARRANTY
Units requiring repair during the warranty period should be returned to a TDK-Lambda Americas
Inc. authorized service facility. Refer to the addresses listing on the back cover of this User’s
Manual. Unauthorized repairs performed by other than the authorized service facilities may void
the warranty.
9.3 PERIODIC MAINTENANCE
No routine maintenance of the power supply is required except for periodic cleaning. To clean,
disconnect the unit from the AC supply and allow 30sec. For discharging internal voltages. The
front panel and the metal surfaces should be cleaned using a mild solution of detergent and
water. The solution should be applied onto a soft cloth, and not directly to the surface of the unit.
Do not use aromatic hydocarbons or chlorinated solvents for cleaning. Use low pressure
compressed air to blow dust from the unit.
9.4 ADJUSTMENTS AND CALIBRATION
No internal adjustment or calibration is required. There is NO REASON to open the power supply
cover.
9.5 PARTS REPLACEMENT AND REPAIRS
As repairs are made only by the manufacturer or by authorized service facilities, no parts re-
placement information is provided in the manual. In case of failure, unusual or erratic operation of
the unit, contact a TDK-Lambda Americas Inc. sales or service facility nearest you. Please refer
to the TDK-Lambda Americas Inc. sales offices addresses listing on the back cover of this User’s
Manual.
9.6 TROUBLESHOOTING
If the power supply appears to be operating improperly, use the Troubleshooting Guide (Table 9-
1) to determine whether the power supply, load or external control circuit are the cause.
Configure the power supply for basic front panel operation and perform the tests of Section 3.8 to
determine if the problem is with the supply.
Table 9-1 provides the basic checks that can be performed to diagnose problems, with refer-
ences to Sections of this User’s Manual for further information.
Table 9-1: Troubleshooting guide
SYMPTOM
CHECK
Is the AC power cord
defective?
Is the AC input voltage
within range?
ACTION
Check continuity, replace if
necessary.
Check AC input voltage.
Connect to appropriate
voltage source.
REF
3.7
No output. All displays and
indicators are blank.
3.6
3.7
Output is present
Does the AC source
voltage sag when load is
applied?
Check AC input voltage.
Connect to appropriate
voltage source.
3.6
momentarily but shuts Off
quickly. The display
indicates “AC”.
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SYMPTOM
Output is present
momentarily but shuts off
CHECK
Is the power supply
configured to Remote
ACTION
Check if the positive or
negative load wire is loose.
REF
3.9.6
3.9.8
quickly.The display indicates sense?
“OUP”.
Output Voltage will not
adjust. Front panel CC LED
is On.
Is the unit in constant
current mode?
Check Output Current
setting and load current.
5.2.1
5.2.2
Output Voltage will not
adjust Front panel CV Led is adjusted above OVP
Check if output voltage is
Set OVP or UVL so they will
not limit the output.
5.3
5.4
On.
setting or below UVL
setting.
Output Current will not
adjust. Front panel CV LED
is on.
Is the unit in constant
voltage mode?
Check Output Current and
voltage setting
5.2
Large ripple present in
output.
Is the power supply in
remote sense?
Is the voltage drop on the
load wire high?
Check load and sense wires 3.9.4
connection for noise and
impedance effects. Minimize
the drop on the load wires.
Turn off the AC power
switch. Check load
3.9.8
No output. Display indicates Overvoltage Protection
“OUP”
5.3
circuit is tripped.
connections. If Analog
Programming is used, check
if the OVP is set lower than
the output.
No output. Front panel
ALARM LED is blinking.
Display indicates “ENA”
Check rear panel J1
5.8
ENABLE connection.
Setup switch SW1 setting.
Check rear panel J1 Output
Shut-Off connection.
Check if air intake or
exhaust are blocked. Check
if the unit is installed
adjacent to heat generating
equipment.
4.4
5.7
Display indicates “SO”
Display indicates “OTP”
Display indicates “Fb”
Check Foldback setting and
load current.
5.5
Poor Load regulation.
Front panel CV LED is on.
Are sensing wires
connected properly?
Connect the sense wires
according to User’s Manual
instructions.
3.9.8
The front panel controls are
non-functional.
Is the power supply in
Local-Lockout mode?
Turn Off the AC power and 7.2.5
wait until the display turns
off. Turn on the AC power
and press front panel
REM/LOC button.
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9.7 FUSE RATING
There are no user replaceable fuses in the power supply. Internal fuses are sized for fault protec-
tion and if a fuse was opened, it would indicate that service is required. Fuse replacement should
be made by qualified technical personnel. Refer to Table 9-2 for a listing of the fuses.
Table 9-2: Internal fuses
Fuse designation
750W model
F301
F302, F304
F31, F32
20A 250VAC, FAST
2A 400VDC, NORMAL
NOT USED
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