Industrial 5-Port Fast Ethernet Switches
with SFP Slot and optional 4 PoE PSE Ports
Basic Model: KSD-541
PoE Model: KSD-541-P
Installation Guide
DOC.080104
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The information contained in this document is subject to change without prior notice. Copyright (C). All
Rights Reserved.
TRADEMARKS
Ethernet is a registered trademark of Xerox Corp.
WARNING:
This equipment has been tested and found to comply with the limits for a ClassAdigital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and if not installed and used in accordance with the
instruction manual may cause harmful interference in which case the user will be required to correct the
interference at his own expense.
NOTICE:
(1) The changes or modifications not expressively approved by the party responsible for compliance
could void the user's authority to operate the equipment.
(2) Shielded interface cables and AC power cord, if any, must be used in order to comply with the
emission limits.
CISPR A COMPLIANCE:
This device complies with EMC directive of the European Community and meets or exceeds the following
technical standard.
EN 55022 - Limits and Methods of Measurement of Radio Interference Characteristics of Information
Technology Equipment. This device complies with CISPR ClassA.
CE NOTICE
Marking by the symbol
indicates compliance of this equipment to the EMC directive of the Euro-
pean Community. Such marking is indicative that this equipment meets or exceeds the following techni-
cal standards:
EN 55022: Limits and Methods of Measurement of Radio Interference characteristics of Information
Technology Equipment.
EN50082/1:Generic Immunity Standard -Part 1:Domestic Commercial and Light Industry.
EN 60555-2: Disturbances in supply systems caused by household appliances and similar electrical
equipment - Part 2: Harmonics.
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Table of Contents
1. Introduction.................................................................................................. 5
1.1 Features ...................................................................................................................6
1.2 Product Panels .........................................................................................................6
1.3 LED Indicators ..........................................................................................................6
1.4 Specifications ...........................................................................................................7
2. Installation .................................................................................................... 9
2.1 Unpacking .................................................................................................................9
2.2 Safety Cautions ........................................................................................................9
2.3 Mounting the Switch on a Wall...................................................................................9
2.4Din-Rail Mounting ....................................................................................................10
2.5 Panel Mounting ........................................................................................................ 11
2.6Applying Power ........................................................................................................ 11
3. Making Connections.................................................................................. 13
3.1 Making UTP Connections .......................................................................................13
3.2 Making Fiber Connection ........................................................................................13
3.3 Making PoE Connections .......................................................................................14
3.4 LED Indication ........................................................................................................15
4. Applications ............................................................................................... 16
4.1 Applications with Basic Switch Model .....................................................................16
4.2 Applications with PoE Switch Model .......................................................................17
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1. Introduction
The switches are 5-port Fast Ethernet switches which are featured with four copper ports and one
combo port. The combo port comes with one RJ-45 and one SFP slot. The SFP slot can be mounted
with a fiber transceiver optionally to support a fiber connection.
For more coming PoE (Power Over Ethernet) applications, the PoE switch model is equipped with PoE
design in four copper ports. With proper 48VDC power supply, it is able to deliver power to four PoE PD
devices via Cat.5 cables. This guide describes the installation information about two models as follows:
Basic Model Industrial 5-port Fast Ethernet switch with SFP slot
PoE Model Industrial 5-port Fast Ethernet switch with SFP slot and PoE feature
In summary, the switch provides the following advantages:
Plug and Play
No configuration is required in using the switch. With the featured auto-negotiation function, the switch
can detect and configure the connection speed and duplex automatically. The switch also provides auto
MDI/MDI-X function, which can detect the connected cable and switch the transmission wire pair and
receiving pair automatically. This auto-crossover function can simplify the type of network cables used.
Fiber Connectivity
For fiber connection, the SFP slot can be installed with an optional SFP optical fiber transceiver to
support one fiber connection when needed.
Power over Ethernet
For PoE applications, four IEEE 802.3af-compliant PoE PSE ports are provided in four copper ports.
Each PSE port can deliver +48VDC power to one PoE PD (Powered Device) via the connected Cat.5
cable.
Industrial Features
For industrial environment, the devices are designed with the following enhanced features exceeding
that of commercial Ethernet switches:
• High and wide operating Temperature
• Power input interface: Industrial screw terminal block and DC power jack for external
commercial power adapter as option
• Screw panel and DIN rail mounting support for industrial enclosure
• Industrial-rated Emission and Immunity performance
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1.1 Features
ꢀ Provides 5 10/100Mbps RJ-45 and one 100Mbps SFP slot
ꢀ All copper ports support auto-negotiation and auto-MDI/MDI-X detection
ꢀ Provides full wire speed forwarding
ꢀ Supports IEEE 802.3x flow control for full-duplex and backpressure for half-duplex
ꢀ Provides SFP slot for optional optical fiber connection
ꢀ Provides four IEEE 802.3af-compliant PoE PSE ports
ꢀ Provides two types of power supply interfaces - DC Jack and terminal block
ꢀ Supports stand-alone, wall,Din-Rail, and panel mounting
ꢀ Industrial-rated emission and immunity performance
1.2 Product Panels
The following figure illustrates the faces of the switch:
1.3 LED Indicators
LED
Function
POWER
Power status
LINK/ACT
100M/10M
PoE STATUS
SFP/RJ-45
Port link status and activities (Port 1 - Port 5)
Port speed status (Port 1 - Port 5)
Port PoE power status (Port 2 - Port 5)
Port 1 SFP / RJ-45 selection status
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1.4 Specifications
Copper Ports w/h PSE (P2-P5)
Compliance
IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX
Connectors
Shielded RJ-45 jacks
Pin assignments
Configuration
Auto MDI/MDI-X detection
Auto-negotiation
Transmission rate
Duplex support
Network cable
Power over Ethernet
10Mbps, 100Mbps
Full/Half duplex
Cat.5 UTP
IEEE 802.3af-compliant PSE (function equipped in PoE Model only)
Combo Port (P1)
Compliance
IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX/100Base-FX
Fiber is selected if an SFP fiber transceiver is installed in SFP slot
Interface Selection
Copper Interface
Connector
Shielded RJ-45 jack
Auto MDI/MDI-X detection
Auto-negotiation or software control
10Mbps, 100Mbps
Pin assignments
Configuration
Transmission rate
Duplex support
Network cable
Fiber Interface
Connector
Full/Half duplex
Cat.5 UTP
SFP slot for optional SFP type fiber transceivers
100Mbps, Full duplex
Configuration
Far End Fault Support
Network cables
Eye safety
Enabled
MMF 50/125 60/125, SMF 9/125
IEC 825 compliant
Switch Functions
MAC Addresses Table 1K entries
Forwarding & filtering Non-blocking, full wire speed
Switching technology
Store and forward
Maximum packet length 1536 bytes
Flow control
IEEE 802.3x pause frame base for full duplex operation
Back pressure for half duplex operation
Broadcast Storm
Protection design
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Power over Ethernet Function (PoE Model)
PSE Pin 4,5
PSE Pin 7,8
Positive of power voltage (Typical 48VDC)
Negative of power voltage (Typical 48VDC)
Discovery PD resistance 15K ~ 33K
PDClassification
Power delivery
Protection
Class 0 ~ 4
15.4W max. (per port)
Under voltage protection
Over voltage protection
Over current detection
DC IN Power Input
Interfaces
DC IN Jack ( -D 6.3mm / + D 2.0mm)
DC IN Terminal Block (screw type)
Operating Input Voltages +6 ~ 60VDC
Power Consumption
PoE Function
3W max. @7.5V (No PoE output)
Operating input voltage: +43V ~ 54V (Typical 48V)
DC IN Jack Interfaces Power jack -D 6.3mm / + D 2.0mm
DC IN Terminal Block Pins: + / - / GND
Mechanical
Dimension (base)
Housing
144 x 104.5 x 26 mm
Enclosed metal with no fan
Mounting Support
Din-rail mounting, Panel mounting, Wall mounting,Desktop mounting
Environmental
Operating Temperature Typical -20oC ~ 70oC
Storage Temperature
Relative Humidity
-20oC ~ 85oC
10% ~ 90%
Electrical Approvals
FCC
CE
Part 15 rule Class A
EMC, CISPR22 Class A
IEC60950-1 / EN60950
Safety
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2. Installation
2.1 Unpacking
The product package contains:
• The switch unit
• One product CD-ROM
2.2 Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire, and damage to the product, observe the
following precautions.
• Do not service any product except as explained in your system documentation.
• Opening or removing covers may expose you to electrical shock.
• Only a trained service technician should service components inside these compartments.
• If any of the following conditions occur, unplug the product from the electrical outlet and replace
the part or contact your trained service provider:
- The power cable, extension cable, or plug is damaged.
- An object has fallen into the product.
- The product has been exposed to water.
- The product has been dropped or damaged.
- The product does not operate correctly when you follow the operating instructions.
• Do not push any objects into the openings of your system. Doing so can cause fire or electric
shock by shorting out interior components.
• Operate the product only from the type of external power source indicated on the electrical
ratings label. If you are not sure of the type of power source required, consult your service
provider or local power company.
2.3 Mounting the Switch on a Wall
The switch can be mounted on a desktop or shelf or a wall. Make sure that there is proper heat
dissipation from and adequate ventilation around the device. Do not place heavy objects on the device.
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2.4 Din-Rail Mounting
The steps to mount the switch on a Din-rail are:
One Din-rail mounting bracket is provided in the product package as shown below:
Install the bracket on the bottom of the switch unit.
Mount the device on a Din-rail.
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2.5 Panel Mounting
One panel mounting bracket is provided in the product package as shown below:
Install the bracket on the bottom of the switch unit.
The final dimension after panel bracket is installed is shown below:
2.6 Applying Power
The switch provides two types of power interfaces, terminal block and DC power jack for receiving DC
power input from external power supply system.
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Using Terminal Blocks
Three terminal contacts are provided:
Vdc Positive (+) terminal
VdcNegative (-) terminal
Chassis ground
* Working Vdc for general application: +6V ~ +60VDC
* Working Vdc for PoE application :
+43V ~ +54VDC (Typ. 48V)
One 3P terminal plugs are provided together with the switch. The plug is shown below:
Power wires : 24 ~ 12AWG (IEC 0.5~2.5mm2)
Install the power source wires with the plug properly. Then, plug in the terminal block socket.
Using DC Power Jack
When an external power system is not available, the switch provides a DC jack to receive power from
typical AC-DC power adapter alternatively.
AC Power Adapters:
Non-PoE applications
PoE applications
Optional commercial rated adapters are available for purchasing.
Rated output DC7.5V 0.5A / 1A / 1.2A
Rated input 100V ~ 240VAC, Output 48VDC / 24W (About 20-21W is
reserved for PoE PDs connected.)
Note: * Before you begin the installation, check the AC voltage of your area. The AC power
adapter which is used to supply the DC power for the unit should have the AC voltage
matching the commercial power voltage in your area.
* For PoE applications, make sure the rated output power meets the required voltage
and power consumption required by all connected PD devices. Refer to sec. 3.3 for
more information.
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3. Making Connections
3.1 Making UTP Connections
The copper ports support the following connection types and distances:
Network Cables
10BASE-T:
2-pair UTP Cat. 3,4,5 , EIA/TIA-568B 100-ohm
100BASE-TX: 2-pair / 4-pair UTP Cat. 5, EIA/TIA-568B 100-ohm
Link distance: Up to 100 meters
Auto MDI/MDI-X Function
This function allows the port to auto-detect the twisted-pair signals and adapts itself to form a valid
MDI to MDI-X connection with the remote connected device automatically. No matter a straight
through cable or crossover cable is connected, the ports can sense the receiving pair automatically and
configure itself to match the rule for MDI to MDI-X connection. It simplifies the cable installation.
Auto-negotiation Function
The ports are featured with auto-negotiation function and full capability to support connection to any
Ethernet devices. The port performs a negotiation process for the speed and duplex configuration with
the connected device automatically when each time a link is being established. If the connected device
is also auto-negotiation capable, both devices will come out the best configuration after negotiation
process. If the connected device is incapable in auto-negotiation, the switch will sense the speed and
use half duplex for the connection.
3.2 Making Fiber Connection
The SFP slot must be installed with an SFP fiber transceiver for making fiber connection. Your
switch may come with an SFP transceiver pre-installed when it is shipped.
To install an SFP fiber transceiver into the SFP slot, the steps are:
1. Turn off the power to the switch.
2. Insert the SFP fiber transceiver into the SFP slot. Normally, a bail is provided for every SFP
transceiver. Hold the bail and make insertion.
3. Until the SFP transceiver is seated securely in the slot, place the bail in lock position.
4. Turn on the power to the switch.
Connecting Fiber Cables
LC connectors are commonly equipped on most SFP transceiver modules. Identify TX and RX
connector before making cable connection. The following figure illustrates a connection example
between two fiber ports:
Make sure the Rx-to-Tx connection rule is followed on the both ends of the fiber cable.
Network Cables
Multimode (MMF) - 50/125, 62.5/125
Single mode (SMF) - 9/125
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3.3 Making PoE Connections
This section describes how to make a connection between a PSE port and a PoE PD device. For the
PoE switch model, Port 2, Port 3, Port 4 and Port 5 are equipped with PoE PSE function. The ports
are enabled to deliver power together with network signal to a connected powered device via Cat.5
cable.
To make a PoE connection, the following check points should be noted:
1. For safety reason, the connected PoE PD (Powered Device) must be a IEEE 802.3af-compliant
device. Incompliant devices are not supported by the PoE switch model.
2. The Cat.5 cables used for the connections must be 4-pair cables. The power is sent over the
spare pairs (4,5) (7,8) of the cable. The maximum distance supported is 100 meters.
3. The DC IN power voltage supplied to the switch must be within the following range to make PoE
function working.
DC IN voltage range for PoE applications : +43V ~ +54V
4. The DC IN power supplied to the switch must meet the following calculation:
DC IN power = Sum of all connected PD power required + 3 watts
The PSE ports are equipped with the following capabilities:
1. Detection for an IEEE 802.3af compliant PD.
2. No power is supplied to a device which is classified non-IEEE 802.3af complaint PD.
3. No power is supplied when no connection exists on the port.
4. The power is cut off immediately from powering condition when a disconnection occurs.
5. The power is cut off immediately from powering condition when overload occurs.
6. The power is cut off immediately from powering condition when overcurrent occurs.
7. The power is cut off immediately from powering condition when short circuit condition occurs.
The figure below illustrates a connection example:
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3.4 LED Indication
LED
Function
State
Interpretation
POWER
Power status
ON
The power is supplied to the switch.
OFF
The power is not supplied to the switch.
LINK/ACT
Port link status
ON
A port link is established. (No traffic)
BLINK Port link is up and there is traffic.
OFF
Port link is down.
100M/10M
PoE STATUS
SFP/RJ-45
Port speed status ON
OFF
Speed 100M is selected.
Speed 10M is selected.
Port PoE power ON
OFF
PoE power is delivered on the port.
PoE power is shut down.
Port1 status
ON
SFP is used on Port 1.
RJ-45 is used on Port 1.
OFF
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4. Applications
4.1 Applications with Basic Switch Model
The following figure illustrates a basic switch model connects five computers via Cat.5 cables.
The following figure illustrates a basic switch model connects four computers via Cat.5 cables and
uplink to a fiber backbone network.
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4.2 Applications with PoE Switch Model
The figure below illustrates a PoE switch connects four PoE IP cameras via Cat.5 cables and uplinks to
a fiber backbone:
The figure below illustrates a PoE switch connects four PoE WLAN access points via Cat.5 cables and
uplinks to a backbone:
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The figure below illustrates a PoE switch powered by a 48V DC power adapter connects four PoE
media converters via Cat.5 cables and uplinks to a fiber backbone:
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