Able Planet Fan 620DuN User Manual

WATSON-MARLOW BREDEL MANUALS

m-620dun-du-gb-02

Watson-Marlow

620DuN / 620Du pumps

Contents

Declaration of conformity

Declaration of incorporation

Five-year warranty

When you unpack your pump

Information for returning pumps 5

Peristaltic pumps - an overview

Safety notes

Pump specifications

18.4 Pump I/D

18.5 Baud

18.6 Stop bits

18.7 Xon/Xoff

18.8 Flow units

18.9 Run time

18.10 Outputs

18.11 Remote stop

18.12 Auto-restart

18.13 Set maximum allowed

speed

8.1

8.2

Pressure capability

Dimensions

Good pump installation practice 14

9.1

9.2

General recommendations 14

18.14 Set minimum allowed

speed

18.15 Scrolling

18.16 Date and time

18.17 Backlight

18.18 ROM

18.19 Language

18.20 Defaults

18.21 Beep

18.22 Security code

18.23 Exit

Do’s and do not’s

10 Connecting this product to a

power supply

11 Start-up check list

12 Switching the pump on for the

first time

13 Switching the pump on in

subsequent power cycles

(if not in auto-restart mode)

14 Manual operation

14.1 Keypad functions

14.2 Speed

19 Pin out details

20 MemoDose

14.3 Direction

20.1 Changing dosing speed

20.2 Footswitch operation and

other remote inputs and

14.4 Keypad lock

14.5 Keypad beep

14.6 Manual operation and

remote digital inputs

and outputs

outputs with MemoDose 54

21 Exit

22 Automatic control wiring using the

14.7 Backlight

620N module

22.1 620N module removal and

replacement

22.2 Wiring up

22.3 Speed: analogue input

22.4 Scaling: analogue input

14.8 Auto-restart

15 Main menu

15.1 Keypad functions in

menu screens

15.2 Main menu entry

16 Pin-secure process protection

17 Head and tubing calibration

18 Setup

22.5 Speed: analogue output 61

22.6 Tachometer frequency

output

18.1 Trim

18.2 Analogue

18.2.1 Input 1: speed

18.2.2 Scaling - stroke

18.2.3 Trim

22.7 Run/stop input

22.8 Direction input

22.9 Auto / manual toggle

input

22.10 MemoDose input

22.11 Leak detection input

22.12 Outputs 1, 2, 3, 4

18.2.4 Exit

18.3 Display

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1 Declaration of conformity

This declaration was issued for Watson-Marlow 620DuN and 620Du pumps

on September 19, 2005. When this pump unit is used as a stand-alone

pump it complies with: Machinery Directive 98/37/EC, Low Voltage

Directive 73/23/EC, EMC Directive 89/336/EC.

This pump is ETL listed: ETL control number 3050250. Cert to CAN/CSA

std C22.2 No 61010-1. Conforms to UL std 61010A-1.

See 8 Pump specifications.

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2 Declaration of incorporation

When this pump unit is to be installed into a machine or is to be assembled with

other machines for installations, it must not be put into service until the relevant

machinery has been declared in conformity with the Machinery Directive 98/37/EC

BS EN 60204-1.

Responsible person: Christopher Gadsden, Managing Director, Watson-Marlow

Limited, Falmouth, Cornwall TR11 4RU, England. Telephone +44 (0) 1326 370370

Fax +44 (0) 1326 376009.

The information in this user guide is believed to be correct at the time of publica-

tion. However, Watson-Marlow Limited accepts no liability for errors or omissions.

Watson-Marlow Bredel has a policy of continuous product improvement, and

reserves the right to alter specifications without notice. This manual is intended for

use only with the pump it was issued with. Earlier or later models may differ. The

most

up-to-date

manuals

appear

the

Watson-Marlow

website:

http://www.watson-marlow.com

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3 Five-year warranty

520 cased pumps, 620 cased pumps and 720 cased pumps

For any 520, 620 or 720 cased pump purchased after 1 January 2007, Watson-

Marlow Limited (“Watson-Marlow”) warrants, subject to the conditions and excep-

tions below, through either Watson-Marlow, its subsidiaries, or its authorised distrib-

utors, to repair or replace free of charge, any part of the product which fails within

five years of the day of manufacture of the product. Such failure must have occurred

because of defect in material or workmanship and not as a result of operation of the

product other than in normal operation as defined in this pump manual.

Watson-Marlow shall not be liable for any loss, damage, or expense directly or indi-

rectly related to or arising out of the use of its products, including damage or injury

caused to other products, machinery, buildings, or property, and Watson-Marlow

shall not be liable for consequential damages, including, without limitation, lost prof-

its, loss of time, inconvenience, loss of product being pumped, and loss of produc-

tion. This warranty does not obligate Watson-Marlow to bear any costs of removal,

installation, transportation, or other charges which may arise in connection with a

warranty claim.

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Conditions of and specific exceptions to the above warranty are:

Conditions

ꢀ Products must be returned by pre-arrangement, carriage-paid, to Watson-

Marlow, or a Watson-Marlow approved service centre.

ꢀ All repairs or modifications must have been made by Watson-Marlow Limited,

or a Watson-Marlow approved service centre or with the express permission of

Watson-Marlow.

ꢀ Warranties purporting to be on behalf of Watson-Marlow made by any person,

including representatives of Watson-Marlow, its subsidiaries, or its distributors,

which do not accord with the terms of this warranty shall not be binding upon

Watson-Marlow unless expressly approved in writing by a Director or Manager

of Watson-Marlow.

Exceptions

ꢀ The warranty shall not apply to repairs or service necessitated by normal wear

and tear or for lack of reasonable and proper maintenance.

ꢀ All tubing and pumping elements as consumable items are excluded.

ꢀ Products which, in the judgment of Watson-Marlow, have been abused, mis-

used, or subjected to malicious or accidental damage or neglect are excluded.

ꢀ Electrical surge as a cause of failure is excluded.

ꢀ Chemical attack is excluded

ꢀ All pumphead rollers are excluded.

ꢀ The 620R family of pumpheads are excluded from all warranty when pumping

above 2 bar while above 165rpm.

ꢀ Pumpheads from the 313/314 and the Microcassette ranges and any 701

extension pumpheads are excluded and retain their one-year standard pump-

head warranty. The drive they are attached to is subject to the five-year war-

ranty as set out here.

ꢀ Ancillaries such as leak detectors are excluded.

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4 When you unpack your pump

Unpack all parts carefully, retaining the packaging until you are sure all components

are present and in good order. Check against the components supplied list, below.

Packaging disposal

Dispose of packaging materials safely, and in accordance with regulations in your

area. The outer carton is made of corrugated cardboard and can be recycled.

Inspection

Check that all components are present. Inspect components for damage in transit.

If anything is missing or damaged, contact your distributor immediately.

Components supplied

620Du and 620DuN pumps are available in two forms, dedicated to either 620R

series pumpheads or 620L series pumpheads. Pumps are supplied as:

ꢀ Dedicated 620R pump drive unit fitted with 620R, 620RE or 620RE4 pumphead

(see 8. Pump specifications); OR: Dedicated 620L pump drive unit fitted with

620L or 620LG pumphead (see 8. Pump specifications)

ꢀ A 620N module providing pump ingress protection to IP66, NEMA 4X, if a

620DuN.

Note: the module is attached for transit, but must be removed to allow wiring

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up, voltage selection and fuse inspection and then re-affixed before the pump

is operated.

ꢀ The designated mains power lead for your pump

ꢀ PC-readable CDROM containing these operating instructions

ꢀ Quick Start manual

Note: Some versions of this product will include components different from those

listed above. Check against your purchase order.

Storage

This product has an extended shelf life. However, care should be taken after storage

to ensure that all parts function correctly. Users should be aware that the pump con-

tains a battery with an unused life of seven years. Long-term storage is not recom-

mended for peristaltic pump tubing. Please observe the storage recommendations

and use-by dates which apply to tubing you may wish to bring into service after stor-

age.

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5 Information for returning pumps

Equipment which has been contaminated with, or exposed to, body fluids, toxic

chemicals or any other substance hazardous to health must be decontaminated

before it is returned to Watson-Marlow or its distributor.

A certificate included at the rear of these operating instructions, or signed state-

ment, must be attached to the outside of the shipping carton. This certificate is

required even if the pump is unused.

If the pump has been used, the fluids that have been in contact with the pump and

the cleaning procedure must be specified along with a statement that the equipment

has been decontaminated.

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6 Peristaltic pumps - an overview

Peristaltic pumps are the simplest pump, with no valves, seals or glands to clog or

corrode. The fluid contacts only the bore of a tube, eliminating the risk of the pump

contaminating the fluid, or the fluid contaminating the pump. Peristaltic pumps can

run dry.

How they work

A compressible tube is squeezed between a roller and a track on an arc of a circle,

creating a seal at the point of contact. As the roller advances along the tube, the

seal also advances. After the roller has passed, the tube returns to its original shape,

creating a partial vacuum which is filled by fluid drawn from the inlet port.

Before the roller reaches the end of the track, a second roller compresses the tube

at the start of the track, isolating a packet of fluid between the compression points.

As the first roller leaves the track, the second continues to advance, expelling the

packet of fluid through the pump’s discharge port. At the same time, a new partial

vacuum is created behind the second roller into which more fluid is drawn from the

inlet port.

Backflow and siphoning do not occur, and the pump effectively seals the tube when

it is inactive. No valves are needed.

The principle may be demonstrated by squeezing a soft tube between thumb and

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finger and sliding it along: fluid is expelled from one end of the tube while more is

drawn in at the other.

Animal digestive tracts function in a similar way.

Suitable applications

Peristaltic pumping is ideal for most fluids, including viscous, shear-sensitive, corro-

sive and abrasive fluids, and those containing suspended solids. They are especial-

ly useful for pumping operations where hygiene is important.

Peristaltic pumps operate on the positive displacement principle. They are particu-

larly suitable for metering, dosing and dispensing applications. Pumps are easy to

install, simple to operate and inexpensive to maintain.

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7 Safety notes

In the interests of safety, this pump and the tubing selected should only be used by

competent, suitably trained personnel after they have read and understood this

manual, and considered any hazard involved. If the pump is used in a manner not

specified by Watson-Marlow Limited, the protection provided by the pump may be

impaired.

Any person who is involved in the installation or periodic maintenance of this equip-

ment should be suitably skilled or instructed and supervised using a safe system of

This symbol, used on the pump and in this manual,

means: Caution, risk of electric shock.

This symbol, used on the pump and in this manual,

means: Caution, refer to accompanying documents.

This symbol, used on the pump and in this manual,

means: Do not allow fingers to contact moving parts.

This symbol, used on the pump and in this manual,

means: Recycle this product under the terms of the EU

Waste Electrical and Electronic Equipment (WEEE)

Directive.

There is a user-replaceable type T5A H

250V fuse in the fuseholder in the centre of

the switchplate at the back of the pump.

The 620N module must be removed, if a 620DuN, to allow

access to the switchplate. See 22.1 620N module removal and

replacement. There are thermal fuses within the pump which

self-reset within 60 seconds; if they trip an error code is dis-

played. This pump contains no user-serviceable fuses or parts.

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Fundamental work with regard to lifting,

transportation, installation, starting-up,

maintenance and repair should be per-

formed by qualified personnel only. The unit must be isolated

from mains power while work is being carried out.

work. In the UK this person should also be familiar with the Health and Safety at

Work Act 1974.

There are moving parts inside the pumphead. Before opening the tool-

unlockable fixed guard (620R) or tool-unlockable track (620L), ensure that

the following safety directions are followed.

ꢀ Ensure that the pump is isolated from the mains power.

ꢀ Ensure that there is no pressure in the pipeline.

ꢀ If a tube failure has occurred, ensure that any fluid in the pumphead has been

allowed to drain to a suitable vessel, container or drain.

ꢀ Ensure that protective clothing and eye protection are worn if hazardous fluids

are pumped.

ꢀ Primary operator protection from rotating parts of the pump is provided by the

pumphead fixed guard. Note that guards differ, depending on the type of

pumphead. See the pumphead sections of this manual: 29 and 33.

ꢀ Secondary operator protection from rotating parts of the pump is provided by

indicator-only switching of the pumphead guard. This function will stop the

pump if the guard is inadvertently opened while the pump is running. For

details of permissible pumphead orientations, see the pumphead sections of

this manual: 29 and 33.

This pump must be used only for its intended purpose. The pump must be accessi-

ble at all times to facilitate operation and maintenance. Access points must not be

obstructed or blocked. The pump’s mains plug is the disconnecting device (for iso-

This product does not comply with the ATEX directive

and must not be used in explosive atmospheres.

lating the motor drive from the mains supply in an emergency). Do not position the

pump so that it is difficult to disconnect the mains plug. Do not fit any devices to the

drive unit other than those tested and approved by Watson-Marlow. Doing so could

lead to injury to persons or damage to property for which no liability can be accept-

ed.

If hazardous fluids are to be pumped, safety procedures specific to the particular

fluid and application must be put in place to protect against injury to persons.

The exterior surfaces of the pump may get hot during operation. Do not take hold

of the pump while it is running. Let it cool after use before handling it.

No attempt should be made to run the drive without a pumphead fitted.

The pump weighs more than 18kg (the exact weight depends on model and pump-

head—see 8 Pump specifications). Lifting should be performed according to standard

Health and Safety guidelines. Finger recesses are built into the sides of the lower

shell for convenience in lifting; in addition, the pump can conveniently be lifted by

grasping the pumphead and (where fitted) the 620N module at the rear of the pump.

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8 Pump specifications

Labels fixed to the rear of the pump contain manufacturer and contact details, prod-

uct reference number, serial number and model details.

DuN

DuN, Du

The same information is carried on the drive’s backplate, accessible when the 620N

module is removed. The picture below is how a 620Du looks from the box. The num-

ber of connectors varies according to the model.

620DuN, IP66 NEMA 4X model and 620Du, IP31 model

This pump can be controlled from the keypad or remotely. It features:

Manual control

Speed adjustment; run and stop; direction control; keypad scaling; “max” key

for rapid priming.

Remote control

The pump can be digitally controlled with a contact closure or logic input signal.

Analogue control

The pump speed can be controlled through an analogue signal input in the

ranges 0-10V, 1-5V or 4-20mA. Scaling can be controlled similarly using

Analogue signal input 2.

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Outputs

A 0-10V, 4-20mA or 0-1478Hz output signal provides feedback of the pump

speed. There are four relay status outputs which can be configured in software

for a variety of pump parameters.

MemoDose

Allows repeat dosing. Stores in memory a pulse count from the motor. This

count is repeated each time START is pressed to provide a single-shot dose.

Calibration

Full calibration with default figures for a range of pumpheads and tubes.

Calibration dose facility.

Serial communications

Full pump control from a PC or other controller with the ability to network up to

16 pumps (620Du) or 32 pumps (620DuN).

Guard switch

Primary operator protection from rotating parts of the pump is provided by the

fixed guard. Secondary operator protection from rotating parts of the pump is

provided by indicator-only switching of the pumphead guard.

PIN-secure process protection

Two levels of control protection: main PIN code and user PIN code.

IP (Ingress Protection) and NEMA definitions

NEMA

1st Digit

2nd Digit

Protected against

ingress of solid objects

with a diameter of

more than 2.5mm.

Tools, wires etc with a

thickness of more than

2.5mm are prevented

from approach

Protection against

dripping water falling

vertically. No harmful

effect must be

Indoor use to provide a

degree of protection

against limited

amounts of falling

water and dirt

produced

Protected against

harmful dust deposits.

Ingress of dust is not

totally prevented but

the dust must not

enter in sufficient

quantity to interfere

with satisfactory

Indoor use to provide a

degree of protection

12 against dust, falling

dirt and dripping, non-

corrosive liquids

Protection against

water projected from a

nozzle against the

equipment (enclosure)

from any direction.

There must be no

harmful effect (water

jet)

Indoor use to provide a

degree of protection

against dust and

spraying of water, oil

and non-corrosive

coolants

operation of the

equipment. Complete

protection against

contact

Indoor or outdoor use*

to provide a degree of

protection against

Protection against

heavy seas or powerful

water jets. Water must

not enter the

equipment (enclosure)

in harmful quantities

(splashing over)

Protection against

ingress of dust (dust-

tight). Complete

protection against

contact

splashing water, wind-

blown dust and rain,

4X hose-directed water;

undamaged by the

formation of ice on the

enclosure. (Resist

corrosion: 200-hour

salt spray)

* 620 cased pumps are rated to NEMA 4X (indoor use) only.

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Pump specifications

Control range (turndown ratio)

Supply voltage/frequency

0.1-265rpm (2650:1)

Filtered 100-120V/200-240V 50/60Hz 1ph

10% of nominal voltage. A well

regulated electrical mains supply is

required along with cable connections

conforming to the best practice of noise

immunity

Maximum voltage fluctuation

Installation category

(overvoltage category)

Power consumption

Full load current

Eprom version

250VA

<1.1A at 230V; <2.2A at 115V

Accessible through pump software

IP66 to BS EN 60529; Equivalent to

NEMA 4X to NEMA 250* (indoor use).

Suitable for heavy industrial, process

and filthy environments. The drive uses

a Gore membrane vent to equalise the

pressure inside the enclosure and to

prevent ingress of water and corrosive

vapours.

Enclosure rating - 620DuN

IP31 to BS EN 60529. Equivalent to

NEMA 2, suitable for indoor use.

Enclosure rating - 620Du

Protected against dripping water and

falling dirt. May be wiped with a damp

cloth, but should not be immersed.

Pumphead options (620R models)

Pumphead options (620L models)

Operating temperature range

Storage temperature range

Maximum altitude

620R, 620RE, 620RE4

620L, 620LG

5C to 40C, 41F to 104F

-25C to 65C, -13F to 149F

2,000m, 6,560ft

Humidity (non-condensing)

(620Du)

80% up to 31C, 88F, decreasing

linearly to 50% at 40C, 104F

Humidity (condensing) (620DuN)

10% - 100% RH

Weight

Noise

See table on previous page

<70dB(A) at 1m

* Protect from prolonged UV exposure.

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Standards

Safety of machinery—electrical equipment of machines:

BS EN 60204-1

Safety requirements for electrical equipment for

measurement, control and laboratory use:

BS EN 61010-1 incorporating A2 Category 2, Pollution degree 2

Degrees of protection provided by enclosures (IP code):

BS EN 60529 amendments 1 and 2

Conducted emissions:

BS EN 55011 A1 and A2, Class A, called by BS EN 61000-6-4

Radiated emissions:

BS EN 55011 A1 and A2, Class A, called by BS EN 61000-6-4

Electrostatic discharge: BS EN 61000-4-2 A1 and A2

Radiated RF immunity:

BS EN 61000-4-3 A1 and A2, called by BS EN 61000-6-2

harmonised

standards

Fast transient burst:

BS EN 61000-4-4 A1 and A2, Level 3 (2kV),

called by BS EN 61000-6-2

Surge testing:

BS EN 61000-4-5 A1 and A2, called by BS EN 61000-6-2

Conducted RF immunity:

BS EN 61000-4-6, called by BS EN 61000-6-2

Voltage dips and interruptions:

BS EN 61000-4-11, called by BS EN 61000-6-2

Mains harmonics: BS EN 61000-3-2 Ed 2

Safety of machinery—basic concepts, general principles of

design: BS EN 292-1 and BS EN 292-2

Pumps and pump units for liquids—common safety

requirements: BS EN 809

UL 61010A-1

CAN/CSA-C22.2 No 61010-1

Other

standards

Conducted emissions FCC 47CFR, Part 15.107

Radiated emissions FCC 47CFR, Part 15

NEMA 4X to NEMA 250 (indoor use) for IP66 products only

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8.1 Pressure capability

0-4 bar higher pressure pumping

This pump’s default running speed is 165rpm. It can be run at any speed up to

265rpm. Please note, however:

ꢀ The 620RE and 620RE4 rotor warranty is limited to 2 bar from 165rpm

to 265rpm.

ꢀ A warning is displayed when the user sets the speed above 165rpm.

Note: Applies to 620RE MarkII and 620RE4 MarkII pumpheads only. (The

620LG is not limited).

ꢀ The pump’s software records the duration of operation above 165rpm.

0-2 bar pressure pumping

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8.2 Dimensions

Unit weights

Drive only

+ 620R, 620RE

+ 620RE4

+ 620L, 620LG

IP31

16.5kg, 36lb 6oz 19.6kg, 43lb 3oz 20.1kg, 44lb 5oz 24.3kg, 53lb 9oz

IP66 NEMA 4X 17.4kg, 38lb 6oz 20.5kg, 45lb 3oz 21.0kg, 46lb 5oz 25.2kg, 55lb 9oz

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9 Good pump installation practice

9.1 General recommendations

Position

A correctly engineered installation will promote long tube life. Site the pump on a

flat, horizontal, rigid surface, free from excessive vibration, to ensure correct lubri-

cation of the gearbox. Allow a flow of air around the pump to ensure that heat can

be dissipated. Ensure that the temperature around the pump does not exceed 40C.

Do not stack other 620 pumps on top of this pump. It is, however, acceptable to

stack other equipment on the upper surface of the 620 (as long as the ambient tem-

perature does not exceed 40C).

Emergency disconnection

The pump’s mains plug is the disconnecting device (for isolating the motor drive

from the mains supply in an emergency). Do not position the pump so that it is dif-

ficult to disconnect the mains plug. The STOP key on the keypad will always stop

the pump. However, it is recommended that a suitable local emergency stop device

is fitted into the mains supply to the pump.

Valves

Peristaltic pumps are self-priming and self-sealing against backflow. No valves are

required in inlet or discharge lines. Valves in the process flow must be opened before

the pump operates. Users are advised to fit a pressure relief device between the

pump and any valve on the discharge side of the pump to protect against damage

caused by accidental operation with the discharge valve closed.

The pump may be set up so that the direction of rotor rotation is clockwise or count-

er-clockwise, whichever is convenient.

Tubing materials: run-in advice

Sta-Pure and Marprene TM tubing are hard to compress when new. When using

tubing made of these materials, the first five pumphead revolutions should be at a

speed of 10rpm or greater. If the pump is run slower, the safety system built into

pump drive’s software may cause it to stop and display an over-current error

message.

Pressure advice

In most circumstances, rotor and tube life are maximised if the pumphead is run

slowly, particularly when pumping at high pressure. However, to maintain

performance at pressures above 2 bar, avoid running the pumphead below 50rpm.

If low-flow, high-pressure operation is necessary, switching to a smaller tube is

recommended.

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9.2 Do’s and do not’s

Do not build a pump into a tight location without adequate airflow around the pump.

Do ensure that when the 620N watertight module is fitted the seals are intact and

properly located. Ensure that the holes for cable glands are properly sealed to main-

tain the IP66 / NEMA 4X rating.

Do not strap the control and mains power cables together.

Do keep delivery and suction tubes as short and direct as possible - though ideally

not shorter than 1m - and follow the straightest route. Use bends of large radius: at

least four times the tubing diameter. Ensure that connecting pipework and fittings

are suitably rated to handle the predicted pipeline pressure. Avoid pipe reducers and

lengths of smaller bore tubing than the pumphead section, particularly in pipelines

on the suction side. Any valves in the pipeline (not usually needed) must not restrict

the flow. Any valves in the flow line must be open when the pump is running.

Do use suction and delivery pipes equal to or larger than the bore of the tube in the

pumphead. When pumping viscous fluids use pipe runs with a bore several times

larger than the pump tube.

Do ensure that on longer tube runs at least 1m of smooth bore flexible tubing is con-

nected to the inlet and discharge port of the pumphead to help to minimize impulse

losses and pulsation in the pipeline. This is especially important with viscous fluids

and when connecting to rigid pipework.

Do site the pump at or just below the level of the fluid to be pumped if possible.

This will ensure flooded suction and maximum pumping efficiency.

Do keep the pumphead track and all moving parts clean and free from contamina-

tion and debris.

Do run at slow speed when pumping viscous fluids (though see Pressure advice in

9.1 General recommendations). Flooded suction will enhance pumping performance

in all cases, particularly for materials of a viscous nature.

Do recalibrate after changing pump tubes, fluid, or any connecting pipework. It is

also recommended that the pump is recalibrated periodically to maintain accuracy.

IP66 / NEMA 4X models may be hosed down, but should not be immersed. Protect

from prolonged UV exposure.

IP31 models may be wiped with a damp cloth, but should not be hosed or

immersed. The front of IP31 models is further protected against light spillages onto

the pump.

When using Marprene or Bioprene continuous tubing, do re-tension the tube

after the first 30 minutes of running.

Tube selection: The chemical compatibility lists published in Watson-Marlow pub-

lications are guides. If in doubt about the compatibility of a tube material and the

duty fluid, request a Watson-Marlow tube sample card for immersion trials.

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DuN, Du

10 Connecting this product

to a power supply

A well regulated electrical mains supply is required along with cable connections

conforming to the best practice of noise immunity. It is not recommended to site

these drives alongside “dirty” electrical mains supplies such as 3-phase

contactors and inductive heaters without special attention being paid to

unacceptable mains-borne noise.

The voltage selector is mounted in the switchplate at

the rear of the pump, protected from water by the

620N module (620DuN). The module must be

removed to allow access to the switchplate. See 22.1

620N module removal and replacement. Set the

voltage selector to 115V for 100-120V 50/60Hz

supplies or 230V for 200-240V 50/60Hz supplies.

Always check the voltage selector switch before con-

necting the mains supply. Make suitable connection

to an earthed, single-phase mains electricity supply.

We recommend using commer-

cially available supply voltage

surge suppression where there

is excessive electrical noise.

Power cable: The pump is supplied fitted with either of two cable glands and

approximately 2.8m of power cable. The European cable is to Harmonised code

H05RN-F3G0.75, used with our gland part number SL0128 which is suitable for an

outside cable sheath diameter of 4-7mm. The north American cable is to type

SJTOW 105C 3-18AWG VW-1 used with our gland part number SL0123 which is suit-

able for an outside cable sheath diameter of 7-9mm.

DuN

Power cables of NEMA 4X specification pumps are fitted with a standard US mains

power plug. IP66 specification pumps are supplied with no plug. Wiring a mains plug

must only be undertaken by suitably skilled, qualified personnel.

Conductor coding

European

brown

North American

black

line

neutral

ground

blue

white

green/yellow

green

DuN

The voltage selector switch is not visible while the

620N module is in place. Do not switch the pump on

unless you have checked that it is set to suit your

power supply by removing the module and inspecting

the switch, and then refitting the module. See 22.1 620N

module removal and replacement.

If the mains power cable is inappropriate for your installation, it can be changed.

Please contact your local Watson-Marlow Bredel service centre.

DuN, Du

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Input line fusing: type T5A H 250V

20mm time-delayed cartridge fuse,

located in a fuseholder in the centre of

the switchplate at the rear of the pump.

Power interruption: This pump has

an auto-restart feature which, when

active, will restore the pump to the

operating state it was in when power

was lost. See 18.12 Auto-restart.

Stop / start power cycles: Do not

power up/power down for more than

100 starts per hour, whether manually

or by means of the auto-restart facility.

We recommend remote control where a

high number of starts is required.

DuN, Du

11 Start-up check list

Note: See also 29.6, 29.7, 29.8 and 33.5, Tube loading.

ꢀ Ensure that proper connections are achieved between the pump tube and

suction and discharge piping.

ꢀ Ensure proper connection has been made to a suitable power supply.

ꢀ Ensure that the recommendations in section 9 Good pump installation practice

are followed.

DuN, Du

12 Switching the pump on

for the first time

Note: This manual uses bold type to highlight the active option in menu screens:

“English” in the first screen represented here. The active option appears on the

pump display in inverse text.

ꢀ Switch on the power supply at the rear of the pump. The pump runs a power-

on test to confirm proper functioning of the memory and hardware. If a fault is

found, an error message is displayed. See 26.1 Error codes.

ꢀ The pump displays a language menu. Use the UP and DOWN keys to select

your language. Press the ENTER key to confirm your choice.

ꢀ The information which follows assumes that your choice was English.

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ꢀ When the language is chosen this menu will not appear again and all menus

will appear in the language you chose. (Language can be reset as described

later. See 18.19 Language.)

ꢀ The pump displays the Watson-Marlow start-up screen for four seconds,

followed by the pump model identity screen for four seconds, and then the

manual mode main screen.

ꢀ The rotation symbol on the display indicates clockwise rotation. The default

speed setting is 165rpm, but 265rpm is available (see 18.13 Set maximum

allowed speed). Other initial start-up operational parameters are listed in the

table below.

First-time start-up defaults

Language

Speed

Not set

Analogue input

User trim

4-20mA

None

165rpm

Direction

Pumphead

Tube size

Calibration

Backlight

Keypad lock

Auto-restart

Scaling

Clockwise

Remote stop

Pump number

Baud rate

Open=run

620R

15.9mm

9600

620R 15.9mm tube

Stop bits

Xon/Xoff

Off

Scrolling increment

Output 1

0.1rpm

Run/Stop *

Direction †

Auto/Man ‡

General alarm

= high

Off

Output 2

Pump status

Beeper

Stopped

Output 3

Output 4

Manual screen rpm

* Run

Security code Not set

† Clockwise rotation

‡ Auto

Note: The settings shown above for Run, Clockwise rotation and Auto are those in

force on initial start-up for the functions available on Output 1, Output 2 and Output

3 respectively. For example, a high signal on Output 2 indicates clockwise rotation.

These can be changed later according to user requirements.

Note: High is equivalent to the common and normally open contacts of the relay on

the adapter board being closed.

The pump is now ready to operate according to the defaults listed above.

All operating parameters may be changed by means of key-presses. See 14 Manual

operation.

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13 Switching the pump on

in subsequent power cycles

(if not in auto-restart mode)

ꢀ Switch on the power supply at the rear of the pump. The pump runs a power-

on test to confirm proper functioning of the memory and hardware. If a fault is

found, an error message is displayed. See 26.1 Error codes.

ꢀ The pump displays the Watson-Marlow start-up screen for four seconds

followed by the pump model identity screen for four seconds, and then the

manual mode main screen.

ꢀ Note: Once in the manual mode main screen, keys assume their normal func-

tions - see 15.1 Keypad in menu screens below. A subsequent press on START

causes the pump to operate.

ꢀ Start-up defaults are those in place when the pump was switched off last.

Check that the pump is set to operate as you require it.

The pump is now ready to operate.

All operating parameters may be changed by means of key-presses. See 14 Manual

operation below.

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14 Manual operation

14.1 Keypad functions

All settings and functions of the pump in manual mode are set and controlled by

means of key-presses. Immediately after the start-up display sequence detailed

above, the manual mode main screen will be displayed. The currently selected rota-

tion direction is indicated on the display by a clockwise or counter-clockwise seg-

mented arrow. If an exclamation

mark ( ! ) shows, it indicates that

Auto-restart is on. If a padlock icon

(

) shows, it indicates that

Keypad lock is on.

Note: A number of the controls

listed below are shortcuts to com-

mands which are also available

through the Main menu. See 15

Main menu.

Note: SHIFT gives access to func-

tions which appear on the upper

part of numeric keys. To access the

MAX function, for example, press

SHIFT once and release it. A sym-

bol appears in the bottom left of the display to indicate that the next keypress will

be SHIFTed. Press 4 (MAX).

A brief single press on each key triggers a beep sound (if enabled - see 14.5 Keypad

beep) and causes the pump to function as follows:

ꢀ START: starts the pump at the speed and in the direction shown on the dis-

play. The rotation symbol will become animated to confirm that the pump is

operating.

If the pump is running when START is pressed, it causes the information

shown on the manual mode main screen to cycle from revolutions per minute,

to flowrate in a choice of units (via a warning screen if flowrate has not been

calibrated and if this is the first cycle since power-up) to rpm, flowrate and Run

time. An example is shown here. The default can be altered from within the

Setup menu (see 18.3 Display).

ꢀ MAX (SHIFT, 4): while pressed, MAX (SHIFT, 4) operates the pump at the

maximum allowed speed and in the direction shown on the display. When

released, the pump returns to its previous status.

Note: Priming can be achieved by pressing MAX (SHIFT, 4) until fluid flows

through the pump and reaches the point of discharge, and then releasing MAX

(SHIFT, 4).

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ꢀ AUTO (SHIFT, 9): has no effect if the pump is running in auto mode. Stops

the pump if it is running in Manual mode and displays a screen offering three

choices: manual control, analogue control or network control. Use the UP and

DOWN keys to make a choice. Press the ENTER key to confirm your decision.

When started under analogue or network control, the pump runs at the speed

set by any analogue or serial communications signal applied to the pump, and

in the direction shown in the display.

ꢀ MAN (SHIFT, 6): stops the pump if it is running in an auto mode and displays

the manual mode main screen. Has no effect if the pump is already running in

manual mode.

ꢀ STOP: if the pump is running, pressing STOP stops the pump. The display will

continue to show the previous speed and direction. The pump will return to this

speed and direction when the START key is pressed again.

ꢀ UP: increases the speed shown on the display in minimum steps of 0.1rpm, or

other steps as pre-selected in the Scrolling section of Setup (18.15), (unless

the speed displayed is already the maximum allowed speed). If the pump is

then started by pressing the START key, it will operate at the new speed. If

the pump is running when UP in pressed, the change takes effect immediately.

Note: If the pump’s flow rate has been calibrated (see 17 Calibration), after a

speed change a screen showing the new rpm figure and the new flowrate is

displayed for four seconds before returning the user to the previously set man-

ual mode main screen: rpm or flowrate.

ꢀ DOWN: decreases the speed shown on the display in minimum steps of

0.1rpm, or other steps as pre-selected in the Scrolling section of Setup

(18.15). If the pump is then started by pressing the START key, it operates at

the new speed. The minimum speed possible is 0.1rpm. If the pump is running

when DOWN is pressed, the change takes effect immediately.

Note: If the pump’s flow rate has been calibrated (see 17 Calibration), after a

speed change a screen showing the new rpm figure and the new flowrate is

displayed for four seconds before returning the user to the previously set man-

ual mode main screen: rpm or flowrate.

Note: You can reduce the pump speed from 0.1rpm (or any other minimum

displayed unit of speed as selected in the Scrolling section of Setup (18.15)) to

0rpm by a further press on the DOWN key. The pump is still in the running

state and the rotation symbol will continue to move. Press the UP key to return

the pump to the minimum speed.

Note: If a minimum allowed speed has been set in the Set Min Speed section

of the Setup menu, the above note on speed reduction to 0rpm does not apply.

ꢀ DIRECTION (SHIFT, 1): toggles the direction of rotation shown on the dis-

play. If the pump is then started by pressing the START key, it rotates in the

new direction. If the pump is running when DIRECTION is pressed, the change

takes effect immediately.

ꢀ ENTER: is used to enter/confirm numeric and menu selections. Also cycles the

information shown on the manual mode main screen exactly as START does,

whether the pump is running or not. See START, above.

ꢀ MENU (SHIFT, 7): causes the main menu to be displayed, from which all

aspects of pump setup can be controlled. See 15 Main menu.

ꢀ CLEAR (SHIFT, 5): clears numeric entries so that they can be entered again.

ꢀ CAL (SHIFT, 8): takes the user to the calibrate sequence.

ꢀ . (decimal point, period) (SHIFT, 0): used in numeric expressions as a

decimal point. To enter 5.3, press 5, SHIFT, 0, 3. (Some languages use ,

(comma) to represent a decimal point. This pump uses .)

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Keypress combinations cause the pump to function as follows:

Note: A number of the controls listed below are shortcuts to commands which are

also available through the Main menu. See 15 Main menu.

ꢀ UP and 1 (DIRECTION) on power-up: toggles the keypad beep on and off.

ꢀ START on power-up: switches on the Auto-restart facility. See 18.12 Auto-

restart.

ꢀ STOP on power-up: switches off the Auto-restart facility. See 18.12 Auto-

restart.

ꢀ STOP and UP while the pump is stopped: turns the display backlight on.

ꢀ STOP and DOWN while the pump is stopped: turns the display backlight off.

ꢀ SHIFT and UP: sets the pump to maximum allowed speed. Note: Unlike its

action elsewhere, SHIFT must be pressed and held. Note: The MAX key has a

similar function, but causes the pump to run at maximum allowed speed only

while the key is pressed.

ꢀ SHIFT and DOWN: sets the pump to minimum allowed speed. Note: Unlike its

action elsewhere, SHIFT must be pressed and held.

ꢀ 1 (DIRECTION) and DOWN, pressed simultaneously: interrupts the display to

show the pump’s ROM version for four seconds.

ꢀ START pressed and held for four seconds: toggles the keypad lock on and off.

Only the START and STOP keys are active when keypad lock is on. The pad-

lock icon is displayed.

ꢀ STOP pressed and held for two seconds: toggles the keypad lock on and off.

Only the START and STOP keys are active when keypad lock is on. The pad-

lock icon is displayed.

ꢀ STOP STOP within half a second: shortcut entry to MemoDose; when in

MemoDose, shortcut return to manual mode main screen. See 20 MemoDose.

14.2 Speed

To change the running speed:

ꢀ Use the UP and DOWN keys to change the pump’s running speed within limits

of 0.1 rpm or other minimum allowed speed and the maximum allowed speed.

Note: You can reduce the pump speed from 0.1 rpm to 0 rpm by a further

press on the DOWN key. The pump is still in the running state and the rotation

symbol will continue to move. Press the UP key to return the pump to the min-

imum speed.

Note: The maximum allowed speed of the drive defaults to 165rpm. It is possible

to set this limit at any speed up to 265rpm. See 18.13 Set maximum allowed speed,

and section 3 Three-year warranty.

14.3 Direction

To toggle the pump’s rotation sense:

ꢀ Press DIRECTION (SHIFT, 1) to toggle the pump between clockwise and

counter-clockwise rotation.

Note: Direction control is available subject to access not being limited by security

code. See 18.22 Security code.

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14.4 Keypad lock

The keypad can be locked to prevent changes to pump speed or other settings, and

make it possible only to start or stop the pump. The padlock symbol shows on the

display.

ꢀ While the pump is running, hold down the START key for two seconds. The

padlock symbol shows and only the START and STOP keys function.

ꢀ The keypad may also be locked while the pump is stopped. Hold down the

STOP key for two seconds. The padlock symbol shows and only the START

and STOP keys function.

ꢀ To unlock the keypad while the pump is running hold down the START key for

two seconds. The padlock symbol is removed. If the pump is stopped hold

down the STOP key until the padlock symbol is removed.

Note: Keypad lock is available subject to access not being limited by security

code. See 18.22 Security code.

14.5 Keypad beep

The pump keypad can operate silently or indicate a positive key-press with a beep

sound.

ꢀ To toggle the sound on and off, stop the pump. Turn off the mains power switch

at the rear of the pump.

ꢀ Depress the UP and 1 (DIRECTION) keys while switching on the mains power

switch at the rear of the pump.

See 18.21 Beep.

14.6 Manual operation and remote digital

inputs and outputs

The remote run/stop, direction and leak-detected inputs are operational.

The remote status outputs are all fully functional.

The STOP key acts as an emergency stop. The run/stop input will not start the pump

in manual mode, but once the START key has been pressed, the remote run/stop

input will stop and start the pump according to its operational state.

(620DuN) If you invert the operation of the remote run/stop switch to operate as

open=stop, you must connect the +5V terminal to the i/p terminal on the Run/stop

input connector (J4), to be able to start the pump from the keypad. See 22.7

Run/stop input.

(620Du) If you invert the operation of the remote run/stop switch to operate as

open=stop, you must connect pin 7 to pin 19, lower D-connector, to be able to start

the pump from the keypad. See 22.7 Run/stop input.

If STOP is pressed the remote run/stop switch will have no effect.

You cannot invert the polarity of the remote direction signal.

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14.7 Backlight

To turn the display backlight on:

ꢀ Depress the STOP and UP keys together.

To turn the display backlight off:

ꢀ Depress the STOP and DOWN keys together.

See 18.17 Backlight.

14.8 Auto-restart

This pump offers an auto-restart feature. When active on power loss, it will restore

the pump when power returns to the operating state it was in when power was lost.

It does not operate when powering down in the middle of a dose; when the pump is

restarted, it will await a press on the START key to begin the interrupted dose

again. Auto-restart is retained while the pump is switched off. When the pump starts

running look for the ! symbol on the display. This ! symbol indicates that the pump

is set for auto-restart.

Do not use auto-restart for more than 100 starts per

hour. We recommend remote control where a high

number of starts is required.

To turn the auto-restart facility on:

ꢀ Turn off the mains power switch at the rear of the pump.

ꢀ Depress the START key while switching on the mains power switch at the rear

of the pump.

To turn the auto-restart facility off:

ꢀ Turn off the mains power switch at the rear of the pump.

ꢀ Depress the STOP key while switching on the mains power switch at the rear

of the pump.

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15 Main menu

15.1 Keypad functions in menu screens

In addition to their functions in other operations, the following keys have specific

actions in menu screens:

ꢀ STOP: In general, STOP functions as a “go back” key, taking the user up one

menu level without making a change.

ꢀ UP: The UP key is used in menu item selection: it moves a highlight up the

menu. When a numerical entry screen is displayed, pressing UP increases the

number displayed.

ꢀ DOWN: The DOWN key is used in menu item selection: it moves a highlight

down a menu. When a numerical entry screen is displayed, pressing DOWN

decreases the number displayed.

ꢀ ENTER: The ENTER key functions in a similar way to the “enter” key of a per-

sonal computer: it confirms key-presses made immediately before. In menu

item selection, it triggers the action or display selected from a menu using the

UP and DOWN keys.

Note: Confirmation screens are displayed for 4 seconds. While they are displayed,

a single press on any key removes them.

15.2 Main menu entry

MENU (SHIFT, 7) displays the main menu and stops the pump if it is running in

Manual mode. It operates at any point in the pump’s activity except where error

screens are displayed, where UP and DOWN keys are used to enter values, or

where a PIN is requested.

The main menu offers five options: Calibrate, Setup, Pin out details, MemoDose

and Exit. Use the UP and DOWN keys to make a choice. Press the ENTER key to

confirm your decision.

Calibrate

Calibrate allows the user to calibrate the pump with default figures for a range of

pumpheads and tubes, as well as to refine the flowrate figures with a calibration

dose facility.

Setup

Setup allows the user to set the pump’s operating parameters under 23 headings:

Trim, Analogue, Display, Pump I/D, Baud, Stop bits, Xon/Xoff, Flow units, Run time,

Outputs, Remote stop, Auto-restart, Set max speed, Set min speed, Scrolling,

Date/time, Backlight, ROM, Language, Defaults, Beep, Security code and Exit.

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Pin out details

Selecting Pin out details causes the pump to display an information screen and

then its preset pin and voltage details under 19 headings: Analogue input 1,

Analogue input 2, Analogue output, Tacho output, Direction enable, Direction input,

Run/Stop input, Leak input, Auto/Man toggle, Dose input, Output 1, Output 2,

Output 3, Output 4, Supply, 0 volts, Earth, Others and Exit.

DuN

Pin out information is not relevant to the 620DuN IP66/NEMA 4X pumps. Selecting

Pin out details causes the pump to display a warning screen and redisplay the main

menu.

DuN, Du

MemoDose

The MemoDose facility is used to remember the number of revolutions needed to

dispense a previously dispensed volume of fluid, and cause the pump to dispense

that volume repeatedly.

Exit

If Exit is selected, the pump returns to its last manual state with the pump stopped.

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16 PIN-secure process protection

The 620DuN and 620Du feature PIN-secure process protection. This allows the

pump to be configured to suit the application, and for the setup to be protect-

ed by two levels of PIN code.

Menu option

or keypress

With Main

code set

With User

code set

Code set and

keypad locked

Menu (SHIFT, 7)

Calibrate

Available

Not available

Main PIN or User

PIN needed

Main PIN needed;

User PIN invalid

Change

Setup

Main PIN needed

Not available

Cal (SHIFT, 8)

Available

Not available

Main PIN or User

PIN needed

Available

Main PIN or User

PIN needed

Change

Main PIN needed

Available

Not available

Max (SHIFT, 4)

Dir (SHIFT,1)

Main PIN needed

Auto (SHIFT, 9)

Man (SHIFT, 6)

Available

Not available

Available

Down

SHIFT and Up

SHIFT and Down

Start

Stop

Available

Enter

Not available

Available

MemoDose

Main PIN or User

PIN needed

Main PIN or User

PIN needed

Keypad lock

Auto-restart

Main PIN needed

Available

The main code gives access to Calibrate, Setup, Direction change and

Keypad lock.

The secondary (User) code permits Calibrate, Direction change and Keypad

lock but bars Setup change.

If either code is used in conjunction with Keypad lock, all keys are disabled

except STOP and START.

To activate and set a security code, see 18.22 Security code.

If the main code is lost or forgotten: The Setup main security code can be

bypassed by entering a special key sequence; all codes can then be cancelled

and reset. Contact Watson-Marlow or your distributor for details.

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17 Head and tubing calibration

The pump can display flowrate in a choice of units as well as speed in revolutions

per minute. It must first be calibrated.

Pump calibration can be limited to users who correctly enter a three-digit security

code. If a security code has been set, selecting Change from the calibration details

screen and confirming with the ENTER key causes the pump to display the Security

code entry sequence. See 18.22 Security code. If no security code has been set, the

pump displays the first screen of the calibration sequence.

To dispense the correct amount of fluid the pump must know which pumphead is fit-

ted and the tube size in the pumphead. The pump is pre-programmed with default

flow rate figures for a range of pumpheads and tubes. You may also measure the

flow from the pump and enter this value for the most accurate calibration.

ꢀ Use the UP and DOWN keys to highlight Calibrate in the main menu. Press

ENTER to confirm.

Alternatively ...

ꢀ Press CAL (SHIFT, 8) to enter the calibration screen from the main running

screen, and return there after calibrating.

Then:

ꢀ The pump displays its current settings: pumphead, tube size and flowrate; the

default for each standard pumphead is the largest tube the pumphead can

take. Example information is shown here.

ꢀ Use the UP and DOWN keys to highlight Accept or Change. Press ENTER to

confirm.

ꢀ If Accept is selected, the default or previously set flowrate data for that pump-

head and tube size are used. The pump displays the main running screen.

ꢀ If Change is selected with a security code in place, the pump starts its security

code entry sequence. See 18.22 Security code. When the correct code is

entered, the pump offers three options: Head and tube; Tube; and

Calibration dose. If Change is selected with no security code in place, the

three options are displayed immediately.

ꢀ Use the UP and DOWN keys to make a selection. Press ENTER to confirm.

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Head and tube

ꢀ If Head and tube is selected, the pump displays a list of standard pumpheads

that can be fitted to the pump.

ꢀ Use the UP and DOWN keys to make a selection. Press ENTER to confirm. An

example is shown here.

ꢀ The pump displays tube sizes, as below.

Tube

ꢀ If Tube is selected or a pumphead choice has just been made, the pump dis-

plays a list of standard tube sizes that can be used in the pumphead previously

identified.

ꢀ Use the UP and DOWN keys to make a selection. Press ENTER to confirm.

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Calibration dose

ꢀ The pump offers to run a calibration dose. Use the UP and DOWN keys to

choose Yes or No. Press ENTER to confirm. Examples are shown here.

ꢀ If No is selected after a tube selection has been made (see Tube above), the

pump briefly displays a confirmation screen showing current head, tube and

flow settings, and redisplays the main menu.

ꢀ If Calibration dose is selected or if Yes is selected after a tube selection has

been made (see Tube above), the pump displays the speed and direction at

which it was last running in manual mode or to which it has just been set and

invites the user to press START.

ꢀ Note: it is possible at this point to change the direction of rotation using the

DIRECTION (SHIFT, 1) key, and to change the speed of rotation using the

numeric keys (followed by ENTER), or the UP and DOWN keys, within the

minimum and maximum limits that have been set. See 18.13 Set maximum

speed and 18.14 Set minimum speed.

ꢀ Put a measuring container at the pump outlet. Press START. The pump runs

for 4 minutes, displaying an information screen for 15 seconds and a further

information screen for the rest of the 4 minutes. You may stop the calibration

dose at any time with the STOP key - but allow the pump to run as long as

possible to obtain the most accurate calibration. A minimum of 15 seconds is

recommended.

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ꢀ Measure the quantity of fluid dispensed. The pump displays its calculated dose,

based on previous calibration data. Use the numeric keys to adjust this reading

to match the measured volume. Press ENTER. The pump briefly displays the

new head, tube and flow settings, and displays the main running screen.

Example figures are shown here.

Note: If the pump has been set to display flow rate in units of mass (see 18.8 Flow

units), as in this example, the pump displays a screen allowing you to confirm the

specific gravity of the duty fluid immediately before the final press on ENTER.

Note: if calibration was entered by pressing CAL (SHIFT, 8) from the main running

screen, the pump redisplays the main running screen and restarts immedi-

ately without waiting for a further command.

Note: Always recalibrate after changing pump tubes, fluid, or any connecting

pipework. It is also recommended that the pump is recalibrated periodically to main-

tain accuracy.

DuN, Du

18 Setup

Entry to the Setup menu is from the Main menu and can be limited to users who

correctly enter a three-digit security code. If a security code has been set, selecting

Setup and confirming with the ENTER key causes the pump to display the Security

code entry sequence. See 18.22 Security code. If no security code has been set, the

pump displays the first of seven screens containing the Setup menu.

The Setup menu

The Setup menu occu-

pies seven screens. The

first two are shown

here.

To move from one

screen to subsequent

screens, repeatedly

press DOWN. Each item

is highlighted in turn until the last item on the screen is highlighted.

A further press on the DOWN key displays the next screen of the

menu, with the first item highlighted.

Follow the reverse procedure using the UP key to move to an item on

a previous screen of the menu.

Make a selection using the UP or DOWN keys and press ENTER to confirm your

choice.

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18.1 Trim

DuN

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DuN, Du

When the pump is under remote control, it tracks an analogue signal from the user’s

remote control system to the i/p terminal of the Analogue 1 and Analogue 2 con-

nectors at the rear of the pump within the ranges 4-20mA, 0-10V or 1-5V. The Trim

setup sequence allows the user to customise the process-signal-to-pump-speed cal-

ibration. The sequence may be entered directly from the Setup menu or from the

Analogue setup menu.

ꢀ Select Trim from the Setup menu or the Analogue setup menu using the UP or

DOWN keys and press ENTER to confirm your choice.

ꢀ Apply the low process analogue signal to the i/p terminal of the Analogue 1

connector as instructed in the display. See 18.2 Analogue. While the signal is

being applied, press ENTER to record the signal as a calibration point.

ꢀ Apply the maximum process control signal. While the signal is being applied,

press ENTER to record the signal as a calibration point.

ꢀ Apply 50% of the maximum process control signal. While the signal is being

applied, press ENTER to record the signal as a calibration point.

ꢀ If a mistake is made, press STOP at any point in the sequence, and the pump

displays the previous screen.

ꢀ The final press on ENTER ends the Analogue 1 trimming sequence.

ꢀ If Analogue 2 has been configured, the pump displays a similar sequence of

screens for that input. Apply the low, high and mid-range signal to the i/p

terminal of the Analogue 2 connector as instructed in the display, pressing

ENTER each time to record the signals as calibration points.

ꢀ If a mistake is made, press STOP at any point in the sequence, and the

pump displays the previous screen.

ꢀ The final press on ENTER ends the Analogue 2 trimming sequence.

ꢀ When trimming is complete the pump displays a confirmation screen and redis-

plays the screen from which it entered the trim sequence: the Setup menu or

the Analogue setup menu.

The pump calculates linear responses from low to mid and from mid to high, and

records the results as new analogue input calibration graphs.

If any of the three signals applied to each input match, a warning screen is displayed

before the confirmation screen appears, and the trim is ignored.

Note: By applying the maximum process control signal when the minimum is

requested and vice versa, inverted responses can be set up.

Note: Resetting factory defaults clears the trim calibration values.

18.2 Analogue

When the pump is under remote control, it tracks an analogue signal from the user’s

remote control system to the i/p terminal of the Analogue 1 connector at the rear

of the pump within the ranges 4-20mA, 0-10V or 1-5V. The Analogue option in the

Setup menu allows the user to configure the pump to operate with his remote con-

trol system.

ꢀ Select Analogue from the Setup menu using the UP or DOWN keys and press

ENTER to confirm your choice.

ꢀ Four options are displayed: Input 1 - speed, Scaling - stroke, Trim and Exit.

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Input 1 - speed allows the user to tell the pump which signal type he will apply to

Analogue 1, or to choose the program option. If he selects Program from the sub-

sequent menu, the user can choose his input type and tell the pump the speeds at

which to operate on receiving a low or high process control signal. See 18.2.1 Input

1 - speed.

Scaling - stroke allows the user to disable scaling control, or if he wishes to enable

scaling, to tell the pump which signal type he will apply to Analogue 2, or to choose

the program option. If he selects Program from the subsequent menu, the user can

choose his input type and tell the pump the speed proportion at which to operate on

receiving a low or high process control signal. See 18.2.1 Input 1 - speed.

Trim displays the Trim menu, described above. See 18.1 Trim.

Exit returns the user to the first section of the Setup menu. See 18 Setup.

18.2.1 Input 1: speed

ꢀ Select Input 1 - speed using the UP or DOWN keys and press ENTER to con-

firm your choice.

ꢀ The pump offers three further choices: 4-20mA, 0-10V and 1-5V. Use the UP

or DOWN keys to make a selection and press ENTER to confirm your decision.

ꢀ The pump configures the hardware and factory-set response data and briefly

displays a confirmation screen. The user is returned to the Analogue setup dis-

play. Example figures are shown here.

ꢀ Alternatively the user can select Program to configure the pump to respond in

a user-programmed way to any process signal range within 4-20mA, 0-10V or

1-5V.

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Program

ꢀ Select Program using the UP or DOWN keys and press ENTER to confirm.

ꢀ The pump offers two choices: mA and V (0-10V). Use the UP or DOWN

keys to make a selection and press ENTER to confirm your decision.

ꢀ The pump displays a screen allowing you to set the speed for low signal

input (4mA or 0V). Use the UP and DOWN keys to scroll the display to your

chosen speed and press ENTER to confirm the figure.

ꢀ The pump displays a screen allowing you to set the speed for high signal

input (20mA or 10V). Use the UP and DOWN keys to scroll the display to

your chosen speed and press ENTER to confirm the figure.

ꢀ If a mistake is made, the user may press STOP at any point in the

sequence (before pressing ENTER on the high signal speed screen), and the

pump displays the previous screen.

ꢀ The final press on ENTER causes the pump to configure the hardware and

programmed response data. It briefly displays a confirmation screen and a

warning that the analogue signal is not trimmed, and returns the user to the

Analogue setup menu. Example values are shown here.

18.2.2 Scaling - stroke

ꢀ Select Scaling - stroke using the UP or DOWN keys and press ENTER to

confirm your choice.

ꢀ The pump offers six further choices: Off, Keypad, 4-20mA, 0-10V, 1-5V and

Program. Use the UP or DOWN keys to make a selection and press ENTER to

confirm your decision.

ꢀ If Off is selected, scaling control is disabled and the pump displays the

Analogue setup menu.

ꢀ The other options allow a choice of inputs to control scaling.

ꢀ If Keypad is selected, scaling will be controlled by entering the scaling fac-

tor using the UP and DOWN keys while the pump is running in Auto ana-

logue mode. See 18.2 Analogue. The pump displays the Analogue setup

menu.

ꢀ If 4-20mA, 0-10V or 1-5V is selected, the pump configures the hardware

and calibration data appropriately. A confirmation screen is displayed briefly

and the user is returned to the Analogue setup menu.

ꢀ If Program is selected, the pump offers: mA (4-20mA) and V (0-10V). Use

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the UP or DOWN keys to make a selection and press ENTER to confirm

your decision.

ꢀ The pump displays a screen inviting the user to enter the required speed

proportion for low signal input (4mA or 0V) as a value from 0% to 100%

Enter your value using the UP or DOWN keys and confirm by pressing

ENTER.

ꢀ A similar screen allows the user to enter the required speed proportion for

high signal input (20mA or 10V) as a value from 0% to 100%. Enter the

value in the same way.

ꢀ If STOP is pressed at any point in the program setup (before pressing

ENTER on the high signal speed proportion screen), the pump displays the

previous screen.

ꢀ When high and low values have been entered and confirmed, the pump con-

figures the hardware and basic calibration data. A confirmation screen is dis-

played briefly, followed by a warning that the analogue signal has not been

trimmed. The user is returned to the Analogue setup screen.

See 22.4 Scaling: analogue input 2 in Automatic control wiring.

18.2.3 Trim

Trim displays the Trim menu, described above. See 18.1 Trim. It is recommended

that a trim calibration is always performed to align the pump’s response to the actu-

al process analogue signal.

18.2.4 Exit

Exit returns the user to the first section of the Setup menu, described above. See

18 Setup.

18.3 Display

The pump can display three default screens in manual mode: revolutions per

minute, flowrate in a choice of units, or both.

ꢀ In the first screen of the Setup menu select Display using the UP and DOWN

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keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing you to choose the format of the manual

mode main screen. Use the UP and DOWN keys to choose and press ENTER

to confirm your decision.

ꢀ If you choose Flowrate and you have not calibrated the pump since switching

it on, a warning screen is displayed for 4 seconds. The warning does not appear

if the display screen formats are cycled again, unless the pump has been

switched off in the mean time.

ꢀ The pump redisplays the first screen of the Setup menu.

ꢀ When the pump next runs, the manual mode main screen will display pump

activity in rpm, flowrate (in the units you chose - see 18.8 Flow units) or both,

according to your choice, plus a run time figure. Examples are shown here.

Alternatively ...

ꢀ In the manual mode main screen, repeatedly press ENTER to cycle the display

between rpm, flowrate (in the units you chose - see 18.8 Flow units) or com-

bined, according to your choice. This cycle operates if the pump is running and

if it is stopped. While the pump is running, you can cycle the display in the

same way by repeatedly pressing START. In both cases, if you have not cali-

brated the pump since switching it on, a warning screen is displayed for 4 sec-

onds before the flowrate screen appears. The warning does not appear if the

display screen formats are cycled again, unless the pump has been switched

off.

ꢀ The pump redisplays the first screen of the Setup menu.

18.4 Pump I/D

The 620Du pump can be individually controlled under RS232 as one of up to 16

pumps. The 620DuN pump can be individually controlled under RS485 as one of up

to 32 pumps. First the pump must be given its identity number.

ꢀ In the first screen of the Setup menu select Pump I/D using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing you to change the pump’s identity num-

ber. Use the numeric keys to enter a new number in the display and press

ENTER to confirm your decision. An example is shown here.

ꢀ The pump displays the first screen of the Setup menu.

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18.5 Baud

The pump can be set to communicate with control devices at a choice of baud rates.

ꢀ In the first screen of the Setup menu select Baud using the UP and DOWN

keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing you to change the pump’s baud rate. Use

the UP and DOWN keys to select 1200, 2400, 4800 or 9600 (or, 620DuN

only, 19k2) and press ENTER to confirm your decision.

ꢀ The pump displays the first screen of the Setup menu.

18.6 Stop bits

The pump can be set to communicate with control devices at a choice of stop bits

settings.

ꢀ In the second screen of the Setup menu select Stop bits using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing you to change the pump’s stop bits set-

ting. Use the UP and DOWN keys to select 2, 1, or 0 and press ENTER to

confirm your decision.

ꢀ The pump displays the second screen of the Setup menu.

18.7 Xon/Xoff

The pump can be set to communicate with control devices using Xon/Xoff flow con-

trol.

ꢀ In the second screen of the Setup menu select Xon/Xoff using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing you to set flow control on or off. Use the

UP and DOWN keys to choose and press ENTER to confirm your decision.

ꢀ The pump displays the second screen of the Setup menu.

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18.8 Flow units

The pump can display its flow rate in metric (SI) or US (imperial) units of volume or

mass.

ꢀ In the second screen of the Setup menu select Flow units using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen offering Metric or US. Use the UP and DOWN

keys to choose and press ENTER to confirm your decision.

ꢀ If you chose Metric, the pump offers a choice of units: ml/min, l/min, l/hr,

g/min or kg/hr. Use the UP and DOWN keys to choose and press ENTER to

confirm your decision.

ꢀ If you chose US, the pump offers a choice of units: US Gallons/hr, US

Gallons/day, lb/hr or lb/day. Use the UP and DOWN keys to choose and

press ENTER to confirm your decision.

ꢀ If you chose a volumetric flow rate from either screen, a confirmation screen

appears briefly and the pump displays the second screen of the Setup menu.

ꢀ If you chose a mass flow rate from either screen, the pump asks for the specif-

ic gravity of the fluid to be pumped. Use the numeric keys to enter a value

between 0.01 and 15.00. Press ENTER to confirm your decision. Press STOP if

you decide to make a different choice of units.

ꢀ A confirmation screen appears briefly and the pump displays the second screen

of the Setup menu.

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18.9 Run time

The pump cumulatively records hours of motor operation. The figure can be dis-

played or reset to zero.

ꢀ In the third screen of the Setup menu select Run time using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump briefly displays the total hours its motor has operated since the last

time the counter was reset to zero hours, followed by an opportunity to reset

the counter to zero hours. An example is shown here. Use the UP and DOWN

keys to choose Yes or No and press ENTER to confirm your decision.

ꢀ The total hours screen is displayed with its total reset to zero, or unchanged, as

appropriate. The pump displays the third screen of the Setup menu.

Note: Run time is displayed on the Combined display. See 18.3 Display. Run time

does not zero when factory default is selected.

18.10 Outputs

The 620DuN pump offers four relay status outputs. See 12 Switching the pump on

for the first time for initial start-up defaults. Each of six parameters can be config-

ured to any output, or more than one output.

DuN

The 620Du pump offers four digital status outputs. See 12 Switching the pump on

for the first time for initial start-up defaults. Each of six parameters can be config-

ured to any output, or more than one output.

The parameters are:

DuN, Du

Run/stop

Provides a status output to indicate whether the pumphead is in a running or

stopped condition. When running at 0rpm, the run/stop output indicates run-

ning.

Direction

Provides a status output to indicate which direction the pump is set to run in.

Auto / man

Provides a status output to indicate whether the pump is in analogue control

mode or manual control mode.

General alarm

Provides an alarm output when any system error condition occurs except: leak

detected; analogue signal out of range; analogue over-signal; analogue no sig-

nal.

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Leak detected

When used with a leak detector, this output provides an alarm when the pump

has been automatically switched off following tube failure.

Head

Provides an alarm when the pumphead guard is open. If it is running, the

pump will stop.

Outputs 1-4 are available as single-pole change-over relay contacts: Relay 1, 2, 3

and 4. Connect to the normally open or normally closed contacts of the relay as

required and configure the pump’s software accordingly. See below in this section.

DuN

Note: The maximum rating on the relay contacts of this pump is 30VDC; maximum

load 30W.

Output 1 and output 2 are available in two formats:

ꢀ From pins 10 and 11, lower D-connector, as 5V TTL signals.

ꢀ From pins 10 and 11, upper D-connector, as open collector logic outputs.

Output 3 and output 4 provide open collector logic outputs from pins 13 and 12,

upper D-connector, respectively.

A supply voltage from the pump (5V, 10V, 12V) or user-supplied up to 30V to pin

22, upper D-connector, provides the voltage level for these logic status outputs.

DuN, Du

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ꢀ In the third screen of the Setup menu select Outputs using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing you to configure each of the four outputs,

or to exit this menu. Use the UP and DOWN keys to choose and press ENTER

to confirm your decision.

ꢀ If Output 1 is chosen, the pump displays the six options.

ꢀ Selecting General, Leak or Head using the UP and DOWN keys and con-

firming the choice by pressing ENTER configures that option to Output 1,

displays a confirmation screen, and returns the user to the Output selection

screen.

ꢀ Selecting Run/Stop, Direction or Auto/Man using the UP and DOWN

keys and confirming the choice by pressing ENTER displays screens allowing

the user to configure Run to High or Low, Clockwise to High or Low, and

Auto to High or Low respectively. Choose using the UP and DOWN keys

and press ENTER to confirm. The option chosen is configured to Output 1.

The pump displays a confirmation screen, and returns the user to the

Output selection screen.

ꢀ The user can configure Output 2, Output 3 and Output 4 in the same way, or

choose Exit.

ꢀ If STOP is pressed during configuration, the previous setting for the output is

retained and the pump redisplays the Output selection screen.

ꢀ If Exit is chosen, the pump returns the user to the third screen of the Setup

menu.

18.11 Remote stop

The 620DuN pump can be stopped and started with a remote switch between the 5V

terminal and the i/p terminal of the Run/stop input, using an open=run or

open=stop command sense. It also operates with a logic input between 5V and 24V

on the i/p terminal of the Run/stop input. If remote switching is disabled, neither the

remote run/stop nor direction signal inputs will affect the pump state.

DuN

The 620Du pump can be stopped and started with a remote switch between pin 7

and pin 19 using an open=run or open=stop command sense. It also operates with

a logic input between 5V and 24V on pin 7. If remote switching is disabled, neither

the remote run/stop nor direction signal inputs will affect the pump state.

DuN, Du

ꢀ In the third screen of the Setup menu select Remote stop using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing the user to disable the remote stop fea-

ture. Use the UP and DOWN keys to choose Yes or No and press ENTER to

confirm the decision.

ꢀ If No is chosen, the pump asks the user to make a further choice, according to

whether the pump is required to run on an open or closed remote switch:

Open=stop or Open=run. Choose using the UP and DOWN keys and press

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ENTER to confirm. The pump briefly displays a confirmation screen and returns

the user to the third screen of the Setup menu.

ꢀ If Yes is chosen, the pump briefly displays a confirmation screen and returns

the user to the third screen of the Setup menu. Example screens are shown

here.

ꢀ Note: The confirmation screen indicates whether Remote stop is enabled or

disabled, and displays the command sense of the remote control switch even if

Remote stop has been disabled. This allows the command sense to be dis-

played if remote switching is disabled.

Even with the remote stop function disabled, the pump

could still start if the remote auto/manual toggle input

is used to toggle the pump into analogue mode.

18.12 Auto-restart

This pump offers an auto-restart feature. If active on power loss, it restores the

pump when power returns to the operating state it was in when power was lost. It

does not operate when powering down in the middle of a dose: when the pump is

restarted, it will await a press on the START key to begin the interrupted dose

again. Auto-restart is retained while the pump is switched off. When the pump starts

running, look for the ! symbol on the display. This symbol indicates that the pump

is set for auto-restart.

ꢀ In the fourth screen of the Setup menu select Auto-restart using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing the user to activate auto-restart. Use the

UP and DOWN keys to choose On or Off and press ENTER to confirm the

decision.

ꢀ If Off is chosen, the pump returns the user to the fourth screen of the Setup

menu. The auto-restart facility will not operate.

ꢀ If On is chosen, the pump returns the user to the fourth screen of the Setup

menu, where an exclamation mark ( ! ) is now visible. This mark confirms that

the auto-restart feature is in place and will operate the next time power is lost

and restored.

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Alternatively ...

ꢀ Stop the pump. Turn off the mains power switch at the rear of the pump.

ꢀ Hold down the START key and turn on the mains power switch. The ! symbol

shows on the display.

ꢀ Start the pump. If the mains supply is interrupted the pump will automatically

restart when the mains power returns.

ꢀ To remove auto-restart switch off the mains power at the rear of the pump.

Hold down the STOP key and turn the mains power switch on. The ! symbol

does not appear.

Do not use auto-restart for more than 100 starts per

hour. We recommend remote control where a high

number of starts is required.

18.13 Set maximum allowed speed

The maximum allowed speed of the drive defaults to 165rpm. It is possible to set

this limit at any speed down to 1rpm as long as the minimum allowed speed is at

least 1rpm less, or up to 265rpm; however, see 8.1 Pressure capability for use above

165rpm.

ꢀ In the fourth screen of the Setup menu select Set max speed using the UP

and DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing the user to set the maximum speed of the

pump equal to or lower than the maximum available. Use the numeric keys to

set the maximum allowed speed and press ENTER to confirm the figure.

ꢀ The pump returns the user to the fourth screen of the Setup menu, via a warn-

ing screen requiring the user to press ENTER if he selected a speed greater

than 165rpm.

18.14 Set minimum allowed speed

The minimum allowed speed of the drive defaults to 0.1rpm. It is possible to set this

limit at any speed up to 264rpm, as long as the maximum speed is at least 1rpm

greater.

ꢀ In the fourth screen of the Setup menu select Set min speed using the UP

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and DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing the user to set the minimum speed of the

pump equal to or higher than the minimum available. Use the numeric keys to

set the minimum allowed speed and press ENTER to confirm the figure.

ꢀ The pump returns the user to the fourth screen of the Setup menu.

18.15 Scrolling

The pump’s speed can be set, up to the maximum allowed speed and down to the

minimum allowed speed, by pressing the numeric keys or by using the UP and

DOWN keys.

The numeric keys allow the user to select a speed in increments of one-tenth of a

revolution per minute (or the equivalent in flow rate if the pump has been config-

ured to display its performance in units of flow).

The UP and DOWN keys allow the speed to be set in increments of the user’s

choice: one-tenth of a revolution per minute; one half of a revolution per minute;

one, two, five or ten revolutions per minute (or their equivalents in flow rate if the

pump has been configured to display its performance in units of flow). Each press

on UP, for example, offers a speed one increment greater than the current speed.

Note: For 0.1rpm, 0.5rpm and 1rpm settings, the increments increase progressive-

ly as long as the UP or DOWN key is continually held down.

ꢀ In the fifth screen of the Setup menu select Scrolling using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing the user to set the UP and DOWN keys’

scrolling increment. Use the UP and DOWN keys to choose 0.1, 0.5, 1.0, 2.0,

5.0 or 10.0. Press ENTER to confirm your choice.

ꢀ The pump returns the user to the fifth screen of the Setup menu.

Note: If the maximum allowed speed has been set to a figure which is not a multi-

ple of the chosen increment, the last active press on UP raises the speed to that

maximum rather than to the next multiple of the chosen increment. Similarly, if the

pump is running at a speed which is not a multiple of the chosen increment, the first

press on UP raises the speed to the next multiple of the chosen increment.

18.16 Date and time

The pump’s real-time clock can be set with the date and time.

ꢀ In the fifth screen of the Setup menu select Date/time using the UP and

DOWN keys. Press ENTER to confirm your choice. The pump displays any pre-

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vious setting.

ꢀ If the setting displayed is correct, press ENTER. The pump redisplays the fifth

screen of the Setup menu.

ꢀ If you wish to change the setting, use the UP and DOWN keys to enter the

current date (two digits), month (three letters), year (four digits), hour, minute

and second (all two digits), pressing ENTER to confirm each one.

ꢀ When ENTER is pressed to confirm the seconds, the pump redisplays the fifth

screen of the Setup menu.

18.17 Backlight

The pump’s display can be illuminated or not according to choice.

ꢀ In the fifth screen of the Setup menu select Backlight using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ The pump displays a screen allowing the user to switch the display backlight on

or off. Use the UP and DOWN keys to choose On or Off and press ENTER to

confirm the decision.

ꢀ The pump returns the user to the fifth screen of the Setup menu. The display is

now illuminated or not according to the user’s decision.

Alternatively ...

ꢀ To turn the backlight off: press STOP and DOWN together.

ꢀ To turn the backlight on: press STOP and UP together.

18.18 ROM

The pump can display its software version, model number and pump speed.

ꢀ In the fifth screen of the Setup menu select ROM using the UP and DOWN

keys. Press ENTER to confirm your choice.

ꢀ The pump displays the software version, model number and the maximum

allowed pump speed for four seconds (an example is shown here), then returns

the user to the fourth screen of the Setup menu. It also displays a checksum:

CHK 123, for example. This may be required if reporting pump performance to

the Watson-Marlow service department.

Alternatively ...

Press 1 (DIRECTION) and DOWN together to interrupt the display and show the

pump’s ROM version for four seconds.

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18.19 Language

The pump can be set to operate in several languages.

ꢀ In the sixth screen of the Setup menu select Language using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ In the next screen, choose a language using the UP and DOWN keys. Press

ENTER to confirm your choice. The pump redisplays the sixth Setup screen in

your chosen language. All screens will subsequently appear in your chosen lan-

guage.

18.20 Defaults

All the pump’s user-set data can be reset to factory defaults.

ꢀ In the sixth screen of the Setup menu select Defaults using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ A warning is displayed for four seconds, and the pump asks the user to confirm

that factory defaults are to be reset. Use the UP and DOWN keys to choose

Yes if you wish the pump to reset all user-set data back to factory defaults

(see 12 Switching the pump on for the first time); or No if you do not wish to

do this. Press ENTER to confirm your decision. If Yes was chosen, the pump

resets its factory defaults and redisplays the sixth Setup screen. If No was cho-

sen, the pump makes no changes to its setup and redisplays the sixth Setup

screen.

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18.21 Beep

The pump keypad can operate silently or indicate a positive key-press with a beep

sound.

ꢀ In the sixth screen of the Setup menu select Beep using the UP and DOWN

keys. Press ENTER to confirm your choice.

ꢀ In the next screen, use the UP and DOWN keys to choose On or Off. Press

ENTER to confirm your decision. The pump redisplays the sixth Setup screen.

Alternatively ...

ꢀ To toggle the sound on and off, stop the pump. Turn off the mains power switch

at the rear of the pump.

ꢀ Depress the UP and 1 (DIRECTION) keys while switching on the mains power

switch at the rear of the pump.

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18.22 Security code

Access to the pump’s Setup and Calibration menus, direction control and keypad lock

can be restricted to those who correctly enter a three-digit security code: the main

code. A secondary user code can be set, which permits PIN access to calibration,

direction and keypad lock, but blocks access to Setup. See 18 Setup, 17 Calibrate,

14.3 Direction and 14.4 Keypad lock.

The codes must first be set.

ꢀ In the sixth screen of the Setup menu select Security code using the UP and

DOWN keys. Press ENTER to confirm your choice.

ꢀ If no code has been set, a screen is displayed inviting the user to set a main

code. Press ENTER to proceed (or STOP to return to the sixth screen of the

Setup menu).

ꢀ If a main code has been set, a screen is displayed inviting the user to set a

new main code, to set a user code (or a new user code if one has already been

set), or to cancel all codes. Choose Set main code, Set user code or Cancel

codes using the UP and DOWN keys. Press ENTER to confirm your choice.

ꢀ If you chose Cancel codes, any codes previously set are cancelled and access

to the pump is not restricted.

ꢀ If you chose Set main code or Set user code, the pump displays a screen

with three blank spaces for digits and the instruction “Enter new code”. Use the

numeric keys to enter three digits. The pump displays a similar three-digit

entry screen and the instruction “Confirm code”.

ꢀ Repeat the digit-entry sequence.

ꢀ If the second three-digit code entered differs from the first, or if the digits cho-

sen as a user code are the same as those already set as a main code, the

pump briefly displays an error message and redisplays the set code options

screen.

ꢀ If the codes tally and, for a user code, if there is no clash with a previously set

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main code, the pump briefly displays a confirmation message and redisplays

the sixth Setup screen. Access to the Setup and Configuration menus, direction

control and keypad lock is now protected by the new security code.

ꢀ If STOP is pressed during code entry, the pump returns the user to the sixth

Setup screen. If STOP is pressed during code confirmation, the pump returns

the user to the first digit-entry screen.

Note: A user code cannot be set unless a main code has previously been set. If you

wish to cancel only a user code, you must use Cancel codes to cancel both user

and main codes, then use Set main code to set a new main code.

Note: If a code has been set but forgotten, it is still possible to access the Setup

screens to cancel the code or reset it to another three-digit number. Contact your

supplier or Watson-Marlow Technical support for the bypass sequence.

18.23 Exit

ꢀ In the seventh screen of the Setup menu Exit is highlighted. Press ENTER.

ꢀ The user is returned to the main menu.

19 Pin out details

Selecting Pin out details from the main menu causes the pump to display an infor-

mation screen and then its preset pin and voltage details under 18 headings:

Analogue input 1, Analogue input 2, Analogue output, Tacho output,

Direction enable, Direction input, Run/Stop input, Leak input, Auto/Man

toggle, Dose input, Output 1, Output 2, Output 3, Output 4, Supply, 0 volts,

Earth and Others. No user input is available in this section; it displays information

only.

In the main menu, select Pin out details using the UP or DOWN keys and press

ENTER to confirm your choice.

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The Pin out details menu

The Pin out details

menu occupies five

screens. The first two

are shown here.

To move from one

screen to subsequent

screens, repeatedly

press DOWN. Each item

is highlighted in turn until the last item on the screen is highlighted.

A further press on the DOWN key displays the next screen of the

menu, with the first item highlighted.

Follow the reverse procedure using the UP key to move to an item on

a previous screen of the menu.

Make a selection using the UP or DOWN keys and press ENTER to confirm your

choice.

The information on pin outs duplicates the details described in this instruction man-

ual under Automatic control wiring.

The screens available are all presented in a similar manner. For example, on select-

ing Analogue input 1, the following screen is displayed:

This indicates that the analogue input signal must be applied to pin 4 of the lower

D-connector at the rear of the pump, where 0 volts is available on pin 16. If the ana-

logue input is configured for a 4-20mA signal, the maximum permitted voltage is 5

volts across the pump; if the analogue input is configured for a 0-10V or 1-5V sig-

nal, the maximum permitted voltage is 10 volts.

The information available on selecting Supply and Others is presented on two

screens each. Pressing DOWN when the first screen of each is displayed causes the

second screen to appear. UP performs a similar function.

Pressing STOP or ENTER in any Pin out information screen returns the user to the

appropriate Pin out menu screen.

To leave the Pin out menu screens

Cycle through the Pin out menu screens until the fifth screen is displayed. Select

Exit using the UP or DOWN keys and press ENTER to confirm your choice.

Alternatively ...

Repeatedly press STOP to go back level by level until the main menu is displayed.

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DuN, Du

20 MemoDose

Each time the pump is started by pressing START, it records the number of pump-

head revolutions which occur until STOP is pressed. The number of revolutions is

proportional to the volume of fluid which has been dispensed: the dose. The

MemoDose facility allows the user to repeat-dose a precise volume of fluid. To do so,

a quantity of fluid must be dispensed as the master dose which the MemoDose facil-

ity can repeat exactly or proportionately.

To dispense a master dose

ꢀ In the manual mode main screen, set the appropriate pump speed and direc-

tion using the UP or DOWN keys and the DIRECTION (SHIFT, 1) key. An

example is shown here. A slower speed may make it easier for the user to

measure accurately - though it may not represent the duty condition.

ꢀ Place a suitable measuring vessel under the pump delivery tube.

ꢀ Press START. The pump runs and fluid is pumped into the vessel.

ꢀ When the required volume of fluid has been dispensed, it is necessary to stop

the pump and display the MemoDose screen. This can be achieved in three

ways.

1 Press the STOP key twice within half a second. The pump stops and imme-

diately displays the MemoDose screen.

OR...

2 Press the STOP key once. The pump stops. (This may make it easier to

ensure that the quantity of fluid that has been dispensed is sufficiently pre-

cise.) Then press the STOP key twice within half a second. The pump dis-

plays the MemoDose screen.

OR ...

3 Press the STOP key. The pump stops. Press the MENU (SHIFT, 7) key. Use

the UP or DOWN keys to select MemoDose. Press ENTER to confirm. The

pump displays the MemoDose screen.

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To repeat the dose

ꢀ The pump has recorded the number of pumphead revolutions required to dis-

pense the master dose. If the volume of fluid in the measuring vessel is the

volume required, press START to repeat the dose.

ꢀ If the volume of fluid in the measuring vessel differs from the volume required,

the percentage may be adjusted within the limits 1% to 999% of the master

dose. Use the UP or DOWN keys to alter the percentage. Press START to dis-

pense the new dose.

ꢀ The display counts down as the dose proceeds and stops when the dose is

complete.

ꢀ If STOP is pressed during dosing, the pump stops and returns the user to the

MemoDose percentage screen.

Press the STOP key twice within half a second if you wish to exit MemoDose and

return to manual operation.

20.1 Changing dosing speed

The user must exit MemoDose in order to change pump speed. After returning to

MemoDose, the pump dispenses the previous dose size at the new speed.

ꢀ Press the STOP key twice within half a second. The pump displays the manual

mode main screen.

ꢀ Do not start the pump. Doing so erases the previously recorded master

dose and replaces it in the pump’s memory with the current, unmea-

sured dose. Adjust the speed showing on the display using the UP or DOWN

keys.

ꢀ Press the STOP key twice within half a second to return to MemoDose. The dis-

play shows the previous percentage dose size. The pump will dose at the new

speed.

Note: To retain the MemoDose value through a power interruption the pump must

be in auto-restart mode. The dosing cycle will resume at the start of a dose and wait

for START to be pressed, with the MemoDose percentage screen displayed. See

18.12 Auto-restart.

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20.2 Footswitch operation and other

remote inputs and outputs with

MemoDose

A footswitch can be used to trigger MemoDose dispensing as a hands-free alterna-

tive to pressing START.

To operate MemoDose with a footswitch, briefly press the footswitch while the

MemoDose percentage screen is displayed.

The remote run/stop input is operational. If a dose is interrupted by a remote stop

signal, the dose will continue from where it stopped when the state is changed to

run.

Remote direction control is disabled. The leak-detection input is operational. All sta-

tus outputs are operational.

Note: The keypad lock feature is particularly useful to prevent inadvertent dose

changes while using the MemoDose facility. Keypad lock continues to operate in

MemoDose if previously enabled; it can also be enabled while in MemoDose mode.

See 14.4 Keypad lock.

DuN, Du

21 Exit

Press Exit in the Main menu to return to the Manual mode main screen.

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DuN

22 Automatic control wiring

using the 620N module

Interfacing the pump with other devices is by means of screw-terminal connectors

within the 620N watertight module at the rear of the pump. Suitable cable must be

passed into the module through one or more watertight cable glands and connect-

ed appropriately. The module must be removed to allow this.

It is important to check that the pump’s voltage set-

ting matches the supply. The voltage selection switch

is on the rear panel of the drive. The module must be

removed (and replaced) to allow it to be checked.

22.1 620N module removal

and replacement

To remove the 620N watertight module:

The module is secured to the back of the drive unit by six M5x12 Pozidriv counter-

sunk stainless steel screws.

ꢀ Remove the six screws using a suitable crosspoint screwdriver, leaving the top

centre screw till last. Even when all screws have been removed, the sealing

strip may cause the module to adhere to the drive. If so, a gentle tap will free

it. Do not use a tool to lever it off.

ꢀ The sealing strip should be retained within its channel on the face of the mod-

ule. The transparent on/off switch cover should be retained on its flange on the

face of the module. Check the integrity of the seal and the transparent on/off

switch cover. If either is damaged, it must be renewed to maintain ingress pro-

tection.

ꢀ If necessary, unplug the two 25-way D-connectors linking the module to the

pump drive. If necessary, remove the module’s earth link from the back of the

drive. However, the link is long enough to allow the module to fold back to give

access to the circuit board inside and to the back of the drive.

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To replace the 620N watertight module:

ꢀ Check that the fuse in the fuseholder (ringed) does not need to be replaced.

Check that the voltage selector switch is correctly set.

ꢀ Check that the sealing strip is fully in its channel on the face of the module.

ꢀ Attach the module’s earth link wire. Replace and tighten its screw to 2Nm.

ꢀ Push home the female (upper) and male 25-way D-connectors.

ꢀ Hold the module in place. Do not disturb the seal or pinch the earth link wire or

D-connector ribbon cables, and screw in the retaining screws (top centre first).

Tighten to 2.5Nm.

Note: The 620N module must be properly fitted using all six screws. Without them,

the screw holes may corrode and IP66 (NEMA4X) protection will be compromised.

22.2 Wiring up

It is the user’s responsibility to ensure the pump’s safe and reliable operation under

remote and automatic control.

This pump’s 0V lines are commoned and mains transformer-isolated from ground

(floating ground). It can be connected to isolated 0V or grounded 0V interfaces.

Cable entry to the module is via up to four watertight cable glands. These may be

fitted in place of the plugs which seal the module when the pump is shipped.

The number of glands needed depends on the

number of connection cables required and the

convenience of the installer. As standard, four

M16 cable glands are provided with the pump.

Recommended control cables must be used

for the terminal blocks: metric = 0.14sq mm

- 2.5sq mm solid and 0.14sq mm - 1.5sq mm

stranded. USA = 26AWG - 14AWG solid and 26AWG - 16AWG stranded. Cable:

circular. Max/min outside diameter to ensure a seal when passed through the stan-

dard gland: 9.5mm-5mm. The cable section must be circular to ensure a seal.

The recommended cable and cable glands must be

used for the IP66 (NEMA 4X) version of this pump;

otherwise ingress protection may be jeopardised.

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For EMC protection, shielded control cable should be used. The shielding should be

terminated to one of the pcb mounting screws or to the adjacent spade connection

(where fitted).

For improved EMC protection in extremely noisy environments, shielded cable may

be used in conjunction with watertight EMC metal cable glands. These must be

earthed to the module by adding an M16x1.5 nut with serrated edges to ensure

proper contact with the inside of the module. It is necessary to remove the module’s

circuit board to access the interior of the module: it is held in place by two fixing

screws which can be removed and replaced with a cross-point screwdriver. Take nor-

mal anti-static precautions when handling printed circuit boards.

Suitable cables for general-purpose use: 300V with extra premium grade PVC jack-

et with good flame and moisture resistance.

Suitable cables for industrial use: 300V extra-rugged polyurethane grade jacket with

resistance to oils, fuels, solvents and water.

For convenience of wiring more than 8 conductors per cable may be awkward to

handle. Only two appear in the illustrations here, for clarity.

ꢀ Use a 19mm spanner to unscrew the sealing plug. Discard the nylon sealing

washer.

ꢀ Screw in one of the supplied M16x1.5 cable glands in place of the plug, using

the new nylon sealing washer supplied. Tighten the gland to 2.5Nm to ensure a

seal, using a 21mm spanner. If a different gland is used, it must be watertight

to IP66.

ꢀ Loosen the gland cap (do not remove it) and pass the cable in through the

gland. When it has passed through the gland, continue to push the cable

through.

ꢀ The inside of the module is shaped to guide the cable past the printed circuit

board inside. Continued pushing will feed in enough cable to grip inside the

module with the fingers.

ꢀ Pull through sufficient cable to reach the connectors required. Leave a little

slack.

ꢀ Strip the outer sheath as necessary and remove 5mm of insulation from the

conductors. No tinning or ferrule is required. Note: If very stiff or large-diame-

ter cable is used, it may be convenient to strip the outer sheath before passing

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the cable’s conductors through the gland. However, to ensure a seal, cable with

an undamaged sheath must be present within the gland when it is tightened.

ꢀ Twist a suitable length of the cable screen. Loosen one of the pcb retaining

screws and wind the shielding round it. Secure the screen by refastening the

screw. Alternatively, secure the cable screen to the adjacent spade connection

(where fitted).

ꢀ Push the bared conductor into the square hole in the connector. When the con-

ductor is fully in, tighten the retaining screw to hold it in place.

ꢀ When all conductors are in position, use a 21mm spanner to tighten the gland

cap to 2.5Nm to ensure a seal. Alternatively, tighten the gland by hand until it

is finger-tight and use a spanner to tighten it further by one-half a turn.

Do not strap the control and mains power cables together.

620N watertight module pcb connectors:

Never apply mains power to the terminals within the

620N module. Apply the correct signals to the

terminals shown below. Limit signals to the maximum

values shown. Do not apply voltage across other

terminals. Permanent damage, not covered by warranty, may

result. The maximum rating on the relay contacts of this pump

is 30V DC; maximum load 30W. Note: Also suitable for low

power: ie, 1mA at 5VDC minimum.

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RS485 settings

Set in Setup, Baud.

Factory default is 9600

Baud

Parity

None

Stop bits

Data bits

Handshake

Auto echo

None

Never apply mains voltage to the D-connectors. Apply

the correct signals to the pins shown. Limit signals to

the maximum values shown. Do not apply voltage

across other pins. Permanent damage, not covered by

warranty, may result.

22.3 Speed: analogue input

It is possible to control the speed of the pump remotely by

one of these methods: a voltage analogue signal within the

ranges 0-10V or 1-5V; or a current analogue signal within

the range 4-20mA; or a remote potentiometer using the 10V

supply at J7.

The analogue process signal must be applied to the i/p ter-

minal of the Analogue 1 connector (J5). Ground to the 0V

terminal of the same connector. The pump will provide an

increasing flow rate for a rising control signal (non-inverted

response) or an increasing flow rate for a falling control sig-

nal (inverted response). See 18.2 Analogue.

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4-20mA circuit impedance: 250Ω.

For voltage modes, a stable, reliable voltage source can be used with a DC voltmeter.

Circuit impedance: 22kΩ.

Inverting the response is set up in software. Do not invert the polarity of the termi-

nals.

A remote potentiometer with a

nominal value of between 1k and

2k with a minimum of 0.25W

should be wired between the

terminals of the Rem-pot connec-

tor (J7) and the i/p terminal of

the Analogue 1 connector (J5).

When using a remote potentiometer, do not apply a voltage

or current control input signal at the same time. The speed

control signal will require calibration relative to the minimum

and maximum settings of the potentiometer. This is done in

software. See 18.1 Trim in the Setup section.

When using a remote potentiometer, it is important to set the analogue input to volt-

age in the Setup menu. Otherwise the reference voltage supply from the Rem-pot

connector will be overloaded and will not provide a full 5V or 10V.

22.4 Scaling: analogue input

It is possible to scale the speed of the pump remotely by one

of these methods: a voltage analogue signal within the

ranges 0-10V or 1-5V; or a current analogue signal within

the range 4-20mA; or a remote potentiometer using the 10V

supply at J7.

The analogue process signal must be applied to the i/p ter-

minal of the Analogue 2 connector (J8). Ground to the 0V

terminal of the same connector.

4-20mA circuit impedance: 250Ω.

For voltage modes, a stable, reliable voltage source can be used with a DC voltmeter.

Circuit impedance: 22kΩ.

Inverting the response is set up in software. Do not invert the polarity of the

terminals.

A remote potentiometer with a

nominal value of between 1k and

2k with a minimum of 0.25W

should be wired between the ter-

minals of the Rem-pot connector

(J7) and the i/p terminal of the

Analogue 2 connector (J8). When

using a remote potentiometer, do not apply a voltage or cur-

rent control input signal at the same time. The scaling con-

trol signal will require calibration relative to the minimum

and maximum settings of the potentiometer. This is done in

software - see 18.1 Trim in the Setup section.

When using a remote potentiometer, it is important to set the analogue input to volt-

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age in the Setup menu. Otherwise the reference voltage supply from the Rem-pot

connector will be overloaded and will not provide a full 5V or 10V.

The speed of the pump as set by Analogue 1 is scaled in proportion to the signal

from Analogue 2 according to the formula y=as, where a is the speed set by

Analogue 1, s is the scaling set by Analogue 2 (0V or 4mA = 0, increasing linearly

to 10V or 20mA = 1), and y is the scaled rotation speed. If Analogue 2 has been set

for an inverted response, the reverse is true. See 18.2 Analogue in the Setup menu.

22.5 Speed: analogue output

An analogue voltage output signal is available on

the Tacho output connector (J11), between the V

terminal and the 0V terminal. The voltage is direct-

ly proportional to the pumphead rotation speed.

0V = zero speed; 10V = maximum allowed speed.

A current analogue signal within the range 4-

20mA is available between the mA terminal and

the 0V terminal. The current is fixed and directly

proportional to the pumphead rotation speed. 4mA

= zero speed; 20mA = maximum allowed speed.

Note: If the mA output is to be used for reading

from a multimeter, a 250Ω resistor is required in series.

22.6 Tachometer frequency output

A tachometer frequency output is available on the Tacho output connector (J11),

between the freq terminal and the 0V terminal. It provides a +5V square wave

pulse, maximum 0.5mA, the frequency of which is directly proportional to pumphead

rotation speed. It provides 5.578 Hz/rpm - 334 pulses per output shaft revolution.

The pulse train from the pump can be used to calculate the speed of rotation or to

determine the number of pumphead revolutions. This output has the required

strength to be effective up to 3m from the pump. Longer cable runs require signal

amplification.

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Important: general instructions for remote control inputs

All remote control inputs can be wired in two ways:

Logic

A logic voltage between 5V TTL and 24V industrial logic may be wired

to the input. The pump is configured to operate without modification

anywhere in this range. Any of the 0V terminals - though preferably

the 0V terminal associated with the desired input - is connected to the

control device’s 0V to make the circuit. Low is equivalent to 0V. High

is equivalent to 5V→24V.

Switch

A remote switch may be connected between the input and any posi-

tive voltage supply from the pump - though preferably the associated

supply terminal. Do not use the 10V supply from the Rem-pot connec-

tor, however.

22.7 Run/stop input

Remote run/stop: connect a remote switch between the

i/p terminal and the +5V terminal of the Run/stop i/p

connector (J4). Alternatively a logic input may be applied

to the i/p terminal, ground to the 0V terminal. High input

stops the pump, low input runs the pump. With no connec-

tion or with the switch open, the pump will default to run-

ning. To change or set the sense of the run/stop input, see

18.11 Remote stop in the Setup menu.

22.8 Direction input

To enable remote direction control and disable the DIRECTION (SHIFT, 1) key on

the keypad, link the terminals of the Direction enable link connector (J6).

Important: Apply no voltage whatever to the Direction enable link. Connect

a remote switch between the +5V terminal and the i/p terminal of the Direction i/p

connector (J2). Open switch for clockwise rotation, closed switch for counter-clock-

wise rotation. Alternatively a logic signal may be applied to the i/p terminal and the

0V terminal of the Direction i/p connector (J2). Low input for clockwise rotation,

high input for counter-clockwise rotation. With no connection the pump defaults to

clockwise rotation.

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22.9 Auto / manual toggle input

Connect a remote switch between the +5V terminal and the

i/p terminal of the Auto-man i/p connector (J1). Closed

switch for automatic control; open switch for manual control.

Alternatively a logic input may be applied to the i/p

terminal of the Auto-man i/p connector, ground to the 0V

terminal. High input for automatic control; low input for

manual control.

22.10 MemoDose input

Connect a momentary contact switch such as a footswitch

or a handswitch between the 5V terminal and the i/p ter-

minal of the Dose i/p connector (J3). Close the switch to

begin a dose. This input is software-debounced and func-

tions in a similar way to the other remote inputs, such as

with 5V to 24V logic as shown above, using the i/p ter-

minal and the 0V terminal. Note: This input is software-

debounced, so the signal can be either momentary or

maintained during the dose. If maintained, the signal

must be removed before the next dose.

22.11 Leak detection input

Connect a remote leak-detection device between the

+12V terminal and the i/p terminal on the Tube monitor

connector (J9). Closed circuit indicates

leak.

Alternatively a logic input may be applied to the i/p ter-

minal, ground to the 0V terminal. High input indicates a

leak. Connect the cable of a Watson-Marlow Tube monitor

leak detector as follows:

Tube monitor wire colour

620N module

Blue

J9 0V terminal

J9 i/p terminal

J9 +12V terminal

Yellow

Red

Terminate the screen in the 620N module with a 360° EMC

gland if required. See 22.2 Wiring up.

Note: Use only Watson-Marlow 620 series tube monitors.

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Important: pump status outputs

Outputs 1-4 are available as single-pole change-over relay contacts:

Relay 1, 2, 3 and 4. Connect to the normally open or normally closed

contacts of the relay as required and configure the pump’s software

accordingly. See 18.10 Outputs.

Note: The maximum rating on the relay contacts of this pump is 30V

DC; maximum load 30W.

Note: Also suitable for low power: ie, 1mA at 5VDC minimum.

22.12 Outputs 1, 2, 3, 4

Note: Relay 1 (J14) is represented here. Relay 2, Relay 3

and Relay 4 (J15, J16 and J17) function identically.

Connect your output device to the c (common) terminal of

your chosen relay connector and either the n/c terminal or

the n/o terminal (normally closed or normally open) as

required. Configure the pump’s software accordingly. See

18.10 Outputs.

By default, Relay 1 is configured to indicate Run/Stop status;

Relay 2 is configured to indicate Direction status; Relay 3 is

configured to indicate Auto/man status; Relay 4 is configured

to indicate General alarm status. See 12 Switching the pump on for the first time.

22.13 Supply voltages

An appropriate voltage supply is available where required on each connector. In

addition, supplies may be drawn from the Spare supplies connector (J12).

In the table below, “Max load” is the maximum total load on each supply, irrespec-

tive of the number of connections.

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DC Voltage

Max load Typical use

Voltage supply for inputs using

remote switch.

Possible voltage supply for out-

puts if only 5V is required.

+5V

10mA

Possible voltage supply for inputs

using remote switch.

Possible voltage supply for out-

puts. Voltage supply for Watson-

Marlow Tube Monitor leak detec-

tor.

Part voltage supply (-12V also

needed) for the Watson-Marlow

proximity switch.

+12V

-12V

10mA

Part voltage supply (+12V also

needed) for the Watson-Marlow

proximity switch.

Reference voltage for remote

potentiometer speed control. Do

not use as a general supply volt-

age.

+10V

(from J7)

Note: All DC supplies are stabilised.

22.14 RS485 input

Connect your network link to J10 using a screened twisted

pair: A to A, B to B, screen to 0V. Ensure that the pump is

configured to operate under Network control. More than one

pump may be controlled with the same RS485 signal: con-

nect all pumps in parallel. See 25 Network control and oper-

ation.

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23 Automatic control wiring

without the 620N module

Interfacing the pump with other devices is by means of three D-connectors at the

rear of the pump. There are two 25-way D-connectors. The top one is male, the

bottom one is female. Mating female and male connectors, screened for EMC com-

patibility, must be conventionally soldered to screened control cables.

Recommended control cable: 7 strands 0.2mm, 24AWG, screened, circular, up to

25-core. The cable screen should be earthed either through the functional earth

pin on the D-connector (pin 1 on the upper (male) 25-way D-connector) (pin 13

on the lower (female) 25-way D-connector), or through the metalwork of the sock-

et or plug.

This pump passes all EMC compatibility requirements with up to 25m (82ft) of the

cable type specified above. Beyond this distance it is the user’s responsibility to

ensure the pump’s safe and reliable operation under remote and automatic control.

Do not strap the control and mains power cables together.

The 0V lines on this pump are mains transformer-isolated from ground (floating

ground). It can be connected to isolated 0V or grounded 0V interfaces. The TTL

(transistor transistor logic) outputs 1 and 2 used here are composed of two states:

nominally 0V and 5V; but in practice <0.4V (<16mA) and 2.4-5V (<0.4mA). They

are not suitable for driving relays. If a relay is to be driven by the TTL signal, it must

be done as described under Logic output 1-4, below.

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RS232 control

RS232 network control is available via a 9-pin D-connector wired as below.

RS232 is the mode which allows the pump to be controlled by computers and process

controllers. It can control every function of the pump, and pass data back to the con-

troller for closed loop operation. Up to 16 pumps can be individually controlled.

Recommended control cable: 7 strands 0.2mm, 24AWG, screened, circular, up to 4-

core. The cable screen should be earthed through the metalwork of the shell.

This pump passes all EMC compatibility requirements with up to 3m (10ft) of the

cable type specified above. Beyond this distance it is the user’s responsibility to

ensure the pump’s safe and reliable operation under remote and automatic control.

The 0V lines on this pump are mains transformer-isolated from ground (floating

ground).

Basic RS232 cabling

A pc can control one pump using

RS232 network cable 059.3121.000;

or more than one pump using additional RS232

network extension cables 059.3122.000, up to a

maximum of 16 pumps. If a connection must be made

to a pc fitted with a 25-pin serial outlet, use RS232 network adaptor 059.3123.000,

shown, dotted, left, instead of 059.3121.000.

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RS232 settings

Set in Setup, Baud.

Factory default is 9600

Baud

Parity

None

Stop bits

Data bits

Handshake

Auto echo

None

Function

RX (receive data)

TX (transmit data)

CTS (clear to send.

Active = low)

Shell

Note: The CTS connection to pin 8 is optional, for use when error conditions are

required.

Never apply mains voltage to the D-connectors. Apply

the correct signals to the pins shown. Limit signals to

the maximum values shown. Do not apply voltage

across other pins. Permanent damage, not covered by

warranty, may result.

23.1 Speed: analogue input 1

It is possible to control the speed of the pump remotely by one of these methods:

a voltage analogue signal within the ranges 0-10V or 1-5V; or a current analogue

signal within the range 4-20mA; or a remote potentiometer.

The analogue process signal must be applied to pin 4 of the lower D-connector. 0V

to pin 16. The pump will provide an increasing flow rate for a rising control signal

(non-inverted response) or an increasing flow rate for a falling control signal (invert-

ed response). See 18.2 Analogue in the Setup menu.

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4-20mA circuit impedance: 250Ω.

For voltage modes, a stable, reliable voltage source can be used with a DC voltmeter.

Circuit impedance: 22kΩ.

Inverting the response is set up in software. Do not invert the polarity of the pins.

A remote potentiometer with a nominal value of between 1k and 2k with a minimum

of 0.25W should be wired as shown. When using a remote potentiometer, do not

apply a voltage or current control input signal at the same time. The speed control

signal will require calibration relative to the minimum and maximum settings of the

potentiometer. This is done in software - see 18.1 Trim in the Setup section.

When using a remote potentiometer, it is important to set the analogue input to volt-

age in the Setup menu. Otherwise the reference voltage supply from pin 21 will be

overloaded and will not provide a full 5V or 10V.

23.2 Scaling: analogue input 2

It is possible to scale the speed of the pump remotely by one of these methods: a

voltage analogue signal within the ranges 0-10V or 1-5V; or a current analogue sig-

nal within the range 4-20mA; or a remote potentiometer.

The analogue scaling signal must be applied to pin 22 of the lower D-connector. 0V

to pin 20. The speed of the pump as set by Analogue 1 is scaled in proportion to the

signal from Analogue 2 according to the formula y=as, where a is the speed set by