Unitronics Uni-COM UAC-CB-01RS2 User manual

Unitronics
1
Uni-COM®CB Modules
Installation Guide
UAC-CB-01RS2,
UAC-CB-01RS4,
UAC-CB-01CAN
SCAN
to download
This guide provides basic installation information for Unitronics’ Uni-COM™ CB Modules.
Use them to add communication ports to specific models of the UniStream®family of
Programmable Logic Controllers. Compatible models comprise a Uni-COM™ CB COM
Module Jack which provides the connection point for the module.
Refer to the specifications of your UniStream model to check whether it is compatible with
CB modules.
UAC-CB-01RS2 offers one RS232 port, UAC-CB-01RS4 offers one RS485 port, and
UAC-CB-01CAN offers one CANbus port.
Technical specifications and Installation Guides are available in Unitronics Technical Library
at www.unitronicsplc.com.
Before You Begin
Before installing the device, the installer must:
Read and understand this document.
Verify the Kit Contents.
Alert Symbols and General Restrictions
When any of the following symbols appear, read the associated information carefully.
Symbol Meaning Description
Danger The identified danger causes physical and property damage.
Warning The identified danger could cause physical and property damage.
Caution Caution Use caution.
All examples and diagrams are intended to aid understanding, and do not guarantee
operation. Unitronics accepts no responsibility for actual use of this product based on
these examples.
Please dispose of this product according to local and national standards and regulations.

This product should be installed only by qualified personnel.
Failure to comply with appropriate safety guidelines can cause severe injury or
property damage.
Do not attempt to use this device with parameters that exceed permissible levels.

Do not connect/disconnect the device when power is on.

UAC-CB-01RS2, UAC-CB-01RS4, UAC-CB-01CAN Installation Guide
Environmental Considerations
Ventilation: 10mm (0.4”) of space is required between the device top/bottom edges
and the enclosure’s walls.
Do not install in areas with: excessive or conductive dust, corrosive or flammable
gas, moisture or rain, excessive heat, regular impact shocks or excessive vibration,
in accordance with the standards and limitations given in the product’s technical
specification sheet.
Do not place in water or let water leak onto the unit.
Do not allow debris to fall inside the unit during installation.

Install at maximum distance from high-voltage cables and power equipment.
Kit Contents
UAC-CB-01RS2 UAC-CB-01RS4 UAC-CB-01CAN
1 UAC-CB-01RS2 module 1 UAC-CB-01RS4 module

1 RS485 terminal block
1 UAC-CB-01CAN module
Uni-COM™ CB Diagram
1
DIN-rail clips, Top and Bottom
These clips secure the module to the DIN-rail
2 COM Module Plug
(not shown)
Plug this into the COM Module Jack located on a
compatible device
3 Door Open door to allow easy access to LEDs and DIP
switch
4 Communication Port
(not shown)
The type of port depends upon the module
5 COM Module Jack and cover This is the connection point for additional modules;
leave covered when not in use
6 Communication LEDs Green. Refer to the device's technical specifications
7 DIP switches Use these to set RS485/CANbus network
termination
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Uni-COM™ CB
Installation
Turn off system power before connecting or disconnecting any module or device.
Use proper precautions to prevent Electro-Static Discharge (ESD).
The module is shipped with its COM module jack covered. To protect the jack from
debris, damage, and ESD, you must leave it covered when not in use.

The final module in a row must have its jack covered.
NOTE UAC-CB modules can only be installed onto compatible devices, such as UniStream
PLCs, or connected to other UAC-CB modules.
Installing UAC-CB Modules
NOTE Mount on a standard DIN-rail next to a compatible device.
Ensure there is sufficient space to install/uninstall modules.
In the first figure below, the module being installed is UAC-CB-01CAN; the second
figure shows a UAC-CB-01RS2 being connected to the UAC-CB-01CAN.
Installing the first module onto the side of the controller:
1. Check the controller to verify that its COM
module jack is not covered.
If the Uni-COM™ CB module the last one in the
configuration, leave the COM jack covered.
2. Push the module onto the DIN-rail until the
clips located at the top and bottom of the unit
have snapped onto the DIN-rail.
3. Slide the module as shown in the accompanying
figure, until the COM module plug is firmly seat
in the other devices’ COM module jack.
Connecting additional modules onto the first:
1. Check the module that is already installed to
verify that its COM jack is not covered.
If the UAC-CB module is to be the last one in
the configuration, do not remove the cover of
its COM jack.
2. Insert the module’s connection plug into the
jack until it is firmly seated.
NOTE If you mount vertically, place a DIN-rail stop or end clamp under the final module in
the configuration. This is especially recommended if vibrations are present.
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UAC-CB-01RS2, UAC-CB-01RS4, UAC-CB-01CAN Installation Guide
Removing a Module
You must remove the end module in a row before removing the next one.
1. Turn off the system power.
2. Disconnect any wires or cables connected to the module.
3. Press the clips on the top and bottom of the modules, and carefully pull the module
from its place.
Wiring
All wiring activities should be performed while power is OFF.
Unused points should not be connected (unless otherwise specified). Ignoring
this directive may damage the device.

Double-check all wiring before turning on the power supply.
Caution To avoid damaging the wire, use a maximum torque of 0.5 N·m (5 kgf·cm).
Do not use tin, solder, or any substance on stripped wire that might cause the
wire strand to break.
 Install at maximum distance from high-voltage cables and power equipment.
Wiring Guidelines
In order to ensure that the device will operate properly and to avoid electromagnetic
interference:
Use a metal cabinet. Make sure the cabinet and its doors are properly earthed.

Use shielded cables.
NOTE For detailed information on avoiding EMI, refer to the document System Wiring
Guidelines, located in the Technical Library in the Unitronics’ website.
UAC-CB-01RS2 - RS232 module
Use shielded cable
Pin Number
Pin Name
Direction
Description
1
-
-
Not connected
2
RXD
In
Receive Data
3
TXD
Out
Transmit Data
4
-
-
Not connected
5
SG
Return
Signal Ground
6 (see note)
-
-
Connected to Pin 7
7 (see note)
-
-
Connected to Pin 6
8, 9
-
-
Not connected
NOTE
Pins 6 and 7 are not connected to internal circuits.
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Uni-COM™ CB
UAC-CB-01RS4 – RS485 module
Wiring Procedures
Use crimp terminals for wiring; use 26-12 AWG wire (0.13 mm2 –3.31 mm2).
1. Strip the wire to a length of 7±0.5mm (0.275±0.020 inches).
2. Unscrew the terminal to its widest position before inserting a wire.
3. Insert the wire completely into the terminal to ensure a proper connection.
4. Tighten enough to keep the wire from pulling free.
Use the RS485 port to create a multi-drop network.
The UAC-CB-01RS4 is shipped with a 4 pin RS485
terminal block. This connector is marked with a pin
assignment that is identical to the corresponding
marking on the module.
RS485 Wiring
D+
Tx/Rx+ (B)
D-
Tx/Rx– (A)
SG
Signal Ground
Functional Ground
Use shielded twisted-pair cable in compliance with EIA RS485 specifications.
When wiring each node, connect the cable shield to the functional ground point of the
RS485 terminal block.
Caution In order to avoid ground-loops, do not connect the RS485 functional ground
terminal to the earth of the system, as it is internally connected to the
controller’s functional ground point.
RS485 Termination
Use the DIP switches shown in the diagram on page 2 to
set the RS485 termination according to this table.
The device is shipped with both its DIP switches set to
ON; change settings if the device is not at one of the ends
of the RS485 network.
Position
DIP Switch
State
1
2
ON ON Terminated
(factory default)
OFF
OFF
Not Terminated
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UAC-CB-01RS2, UAC-CB-01RS4, UAC-CB-01CAN Installation Guide
UAC-CB-01CAN - CANbus module
There are two RJ45 connectors on the top of this module.
Connect one connector to your CANbus network. The other connector may be used to
daisy-chain to another device.
CANbus Wiring
Use CAT-5e shielded cable with
RJ45 connector.
When wiring each node, connect
the cable shield to the shield of
the RJ45 connector.
Connect the CANbus cable shield
to the system earth at only one
point near the power supply.
Pin #
Description
shield
Functional Ground
1
H CAN High
2
L CAN Low
3 -V CANbus
Signal Common
4
Don't connect
5
Don't connect
6
Don't connect
7
Don't connect
8
Don't connect
CANbus Termination
Use the DIP switches shown in the diagram on page 2 to
set the CANbus termination according to this table.
The device is shipped with both its DIP switches set to
ON; change settings if the device is not at one of the ends
of the CANbus network.
Position
DIP Switch
State
1
2
ON ON Terminated
(factory default)
OFF
OFF
Not Terminated
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DOC32004-A5 02/19
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