IG_UIS-WCB2

IG_UIS-WCB2
Uni-I/O™ Wide
Modules
Installation Guide
UIS-WCB2
Uni-I/O™ Wide is a family of Input/Output modules that are compatible with the
UniStream™ control platform. Wide Modules are 1.5 times as wide as Uni-I/O™ modules,
and comprise more I/O points in less space.
This guide provides basic installation information for UIS-WCB2 Uni-I/O™ module.
Technical specifications may be downloaded from the Unitronics website.
The UniStream™ platform
comprises CPU controllers, HMI
panels, and local I/O modules
that snap together to form an
all-in-one Programmable Logic
Controller (PLC).
Install Uni-I/O™ modules:
 Onto the back of any
UniStream™ HMI Panel
comprising a CPU-for-Panel.
 Onto a DIN-rail, using a
Local Expansion Kit.
The maximum number of Uni-I/O™ Wide modules that can be connected to a single CPU
controller is limited. For details, please refer to the specification sheets of the
UniStream™ CPU or any of the relevant Local Expansion Kits.
Before You Begin
Before installing the device, the installer must:
 Read and understand this document.
 Verify the Kit Contents.
Installation option requirements
If you are installing a Uni-I/O™ module onto:
 A UniStream™ HMI Panel; the Panel must comprise a CPU-for-Panel, installed according
to the CPU-for-Panel installation guide.
 A DIN-rail; you must use a Local Expansion Kit, available by separate order, to integrate
the Uni-I/O™ modules on the DIN-rail into a UniStream™ control system.
Alert Symbols and General Restrictions
When any of the following symbols appear, read the associated information carefully.
Symbol
Caution
Meaning
Description
Danger
The identified danger causes physical and property damage.
Warning
The identified danger could cause physical and property damage.
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.
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UIS-WCB2 Installation Guide
 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.
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
1 Uni-I/O™ module
4 I/O terminal blocks (2 black and 2 gray)
Uni-I/O™ Diagram
1
DIN-rail clips
Provide physical support for CPU and modules. There are two
clips: one at the top (shown), one at the bottom (not shown).
2
I/Os
I/O connection points
4
I/O Bus - Left
Left-side Connector
5
Bus Connector
Lock
Slide the Bus Connector Lock to the left, to electrically connect
the Uni-I/O™ module to the CPU or adjacent module.
6
I/O Bus - Right
Right-Side Connector, shipped covered. Leave covered when not
in use.
3
Bus Connector
Cover
7
I/Os
I/O connection points
8
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Uni-I/O™
9
Output LEDs
Green / Red LEDs
10
Input LEDs
Green / Red LEDs
11
Status LED
Tricolor LED, Green/Red/Orange
NOTE
 Refer to the module's specification sheet for LED indications.
12
Module door
Shipped covered with protective tape to prevent the door from
being scratched. Remove tape during installation.
13
Screw holes
Enable panel-mounting; hole diameter: 4mm (0.15”).
About the I/O Bus Connectors
The I/O Bus connectors provide the physical and electrical connection points between
modules. The connector is shipped covered by a protective cover, protecting the connector
from debris, damage, and ESD.
The I/O Bus - Left (#4 in diagram) can be connected to either a CPU-for-Panel, a
Uni-COM™ Communication module, to another Uni-I/O™ module or to the End Unit of a
Local Expansion Kit.
The I/O Bus - Right (#6 in diagram) can be connected to another I/O module, or to the
Base Unit of the Local Expansion Kit.
Caution
 If the I/O module is located last in the configuration, and nothing is to be
connected to it, do not remove its Bus Connector Cover.
Installation
 Turn off system power before connecting or disconnecting any modules or devices.
 Use proper precautions to prevent Electro-Static Discharge (ESD).
Installing a Uni-I/O™ Module onto a UniStream™ HMI Panel
NOTE
The DIN-rail type structure on the back of the panel provides the physical support for
the Uni-I/O™ module.
1. Check the unit to which you will connect the Uni-I/O™ module to verify that its Bus
Connector is not covered.
If the Uni-I/O™ module is to be the last one in the configuration, do not remove the
cover of its I/O Bus Connector - Right.
2. Open the door of the UniI/O™ module and hold it as
shown in the accompanying
figure.
3. Use the upper and lower
guide-tunnels (tongue &
groove) to slide the UniI/O™ module into place.
4. Verify that the DIN-rail clips
located at the top and
bottom of the Uni-I/O™
module have snapped onto
the DIN-rail.
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UIS-WCB2 Installation Guide
5. Slide the Bus Connector Lock all the way to
the left as shown in the accompanying figure.
6. If there is already a module located to its
right, complete the connection by sliding the
Bus Connector lock of the adjacent unit to the
left.
7. If the module is the last in the configuration,
leave the I/O bus connector covered.
Removing a Module
1. Turn off the system power.
2. Disconnect the I/O terminals (#2,3,7,8 in the diagram).
3. Disconnect the Uni-I/O™ module from the adjacent units: slide its Bus Connector Lock
to the right. If there is a unit located on its right, slide the lock of this module to the
right as well.
4. On the Uni-I/O™ module, pull the top DIN-rail clip up and the bottom clip down.
5. Open the door of the Uni-I/O™ module and hold it with two fingers as shown in the
figure on page 3; then pull it carefully from its place.
Installing Uni-I/O™ modules onto a DIN-rail
To mount modules onto a DIN-rail, follow steps 1-7 in Installing a Uni-I/O™ Module onto a
UniStream™ HMI Panel on page 3.
In order to connect the modules to a UniStream™ controller, you must use a Local
Expansion Kit.
These kits are available with and without power supplies, and with cables of varying
lengths. For complete information, please refer to the installation guide of the relevant
Local Expansion Kit.
Numbering Modules
You can number modules for reference purposes. A set of 20 stickers is provided with
every CPU-for-Panel; use these stickers to number the modules.
 The set contains numbered and blank
stickers as shown in the figure to the left.
 Place them on the modules as shown in the
figure to the right.
Wiring
 This equipment is designed to operate only at SELV/PELV/Class 2/Limited Power
environments.
 All power supplies in the system must include double insulation. Power supply
outputs must be rated as SELV/PELV/Class 2/Limited Power.
 Do not connect either the ‘Neutral’ or ‘Line’ signal of the 110/220VAC to device’s 0V
point.
 Do not touch live wires.
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Uni-I/O™
 All wiring activities should be performed while power is OFF.
 Use over-current protection, such as a fuse or circuit breaker, to avoid excessive
currents into the UIS-WCB2 module supply port.
 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 Procedure
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 (0.250–0.300 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.
UIS-WCB2 Connection
Points
All wiring diagrams and
instructions in this document
refer to the UIS-WCB2
connection points. These are
arranged in four groups of
eleven points each, as shown in
the figure to the right.
Two top groups
Input connection points
Two bottom groups
Outputs and power supply
connection points
The function of certain I/Os
may be adapted via wiring and
software settings.
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UIS-WCB2 Installation Guide
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 wires that are properly sized for the load.
 Use shielded twisted pair cables for wiring High Speed and Analog I/O signals.
Use shielded cables for wiring thermocouple and RTD signals.
In either case, do not use the cable shield as a signal common / return path.
 Route each I/O signal with its own dedicated common wire. Connect common wires at
their respective common (CM) points at the I/O module.
 Individually connect each 0V point and each common (CM) point in the system to the
power supply 0V terminal, unless otherwise specified.
 Individually connect each functional earth point ( ) to the earth of the system
(preferably to the metal cabinet chassis). Use the shortest and thickest wires possible:
less than 1m (3.3’) in length, minimum thickness 14 AWG (2 mm2).
 Connect the power supply 0V to the earth of the system.
 Earthing the cables' shield:

Connect the cable shield to the earth of the system - preferably to the metal cabinet
chassis. Note that the shield must be connected only at one end of the cable;
typically, earthing the shield at the UIS-WCB2 end performs better.

Keep shield connections as short as possible.

Ensure shield continuity when extending shielded cables.
NOTE
For detailed information, refer to the document System Wiring Guidelines, located in
the Technical Library in the Unitronics’ website.
Wiring the Power Supply
This module requires an external, regulated 24VDC power supply.
 The power supply port is not isolated from the bus; therefore the 0V of the power
supply port must be connected to the HMI Panel’s 0V.
Ignoring this directive may damage the device.
Connect the 24V and 0V terminals as
shown in the accompanying figure.
Wiring the Digital Inputs
All 10 digital inputs share the common point CM1. The digital inputs may be wired
altogether as sink or source.
Inputs I0, I1, I3, and I4 can be configured as either normal digital inputs or as high speed
inputs that can receive high speed pulse signals from sensors or shaft encoders.
Inputs I2 and I5 through I9 can function only as normal digital inputs.
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Uni-I/O™
High Speed Input Modes
Following are the different pin assignments for the high speed channels:
Channel 1
Quadrature
Pulse/Direction
NOTE
I0
Phase A
Pulse
Channel 2
I1
Phase B
Direction
I3
Phase A
Pulse
I4
Phase B
Direction
 Input modes are set both by wiring and software.
 When connecting pulse sources without a direction signal, leave the direction pin
unconnected. Note that in this configuration, the direction pin cannot be used as
normal input.
NOTE
Input wiring, sink
Input wiring, source
High Speed Input wiring, sink
High Speed Input wiring, source
Use sink input wiring to connect a sourcing (pnp) device.
Use source input wiring to connect a sinking (npn) device.
Wiring the Analog Inputs
Both inputs share the common point CM0.
NOTE
 Each input offers two modes: voltage or current. You can set each input
independently. The mode is determined both by wiring and by the hardware
configuration within the software application.
 Voltage and current modes use distinct points. Connect only the point associated
with the selected mode; leave the other point unconnected.
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UIS-WCB2 Installation Guide
Voltage
Differential
Single-ended
2-wire
3-wire
Current
4-wire
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Uni-I/O™
Wiring the Temperature Inputs
 Each input offers three modes: thermocouple, mV or RTD. You can set each input
independently. The mode is determined both by wiring and by the hardware
configuration within the software application.
NOTE
In order to maintain correct operation of the temperature inputs, connect together points
RTn+ and RTn- of unused temperature inputs and leave point Rn+ unconnected (n
designates input number).
Thermocouple and mV
 When using thermocouple or mV modes, leave point Rn+ unconnected (n
designates input number).
NOTE
Thermocouple
mV
About thermocouple isolation
Although the temperature inputs are isolated from the bus and the module's power-supply
port, they are neither isolated from each other nor from the analog inputs. Therefore,
temperature inputs isolation may be bypassed when using an exposed-junction (nonisolated) thermocouple in conjunction with analog inputs or another exposed-junction
thermocouple, which can lead to flow of unwanted currents through the thermocouple
wires that might interfere with thermocouple voltage reading.
In order to maintain temperature inputs isolation when using one or more of the analog
inputs or when using more than one thermocouple, either:
 Use isolated-junction thermocouples, or, if you are not using the analog inputs, you may
use up to one exposed-junction thermocouple per UIS-WCB2 module;
 Electrically isolate exposed-junction thermocouples from other electrically-conductive
parts of the system.
RTD
NOTE
 When connecting 3- or 4-wire RTDs, make sure to use conductors of the same
type, width, and length for all RTD wires, otherwise module accuracy will degrade.
 When connecting 4-wire RTDs, use 3-wire cable and leave the unused wire
unconnected with minimal length.
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UIS-WCB2 Installation Guide
3-wire and 2-wire
4-wire
Wiring the Source Transistor Outputs
Output’s power supply
The use of any of the outputs requires an
external 24VDC power supply as shown in the
accompanying figure.
 In the event of voltage fluctuations or non-conformity to voltage power supply
specifications, connect the device to a regulated power supply.
Outputs
Connect the +VO and 0VO terminals as shown
in the accompanying figure.
O2-O9 share common return 0VO.
Wiring the Sink Transistor Outputs
NOTE
 The outputs are not isolated.
 Connect a current limiting device in series with outputs O0 and O1. These outputs
are not short-circuit protected.
Outputs O0 and O1 can independently be configured as either normal digital outputs or as
high speed PWM outputs.
Outputs O0 and O1 share the common point CM4.
CM4 is internally connected to the 0V point. To minimize EMI emission by high-speed
signals' wiring, do not externally connect CM4 to the system 0V.
 Do not use point CM4 for any purpose other than connecting the digital output
load. Using it for any other purpose may damage the module.
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Uni-I/O™
Normal Transistor Output
High Speed PWM Output
Wiring the Analog Outputs
NOTE
 The outputs are not isolated.
 Each output offers two modes: voltage or current. You can set each output
independently. The mode is determined both by wiring and by the hardware
configuration within the software application.
 Voltage and current modes use distinct points. Connect only the point associated
with the selected mode; leave the other point unconnected.
Each output has its own common point (CM2 for O0, CM3 for O1). Connect each analog
output using its corresponding CM point.
CM2 and CM3 are internally connected to the 0V point. To minimize EMI pickup by analog
signals' wiring, do not externally connect CM2 or CM3 to the system 0V.
 Do not use points CM2 or CM3 for any purpose other than connecting the analog
output load. Using them for any other purpose may damage the module.
Voltage
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Current
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UIS-WCB2 Installation Guide
The information in this document reflects products at the date of printing. Unitronics reserves the right, subject to all applicable laws, at any time, at its sole discretion, and without notice, to
discontinue or change the features, designs, materials and other specifications of its products, and to either permanently or temporarily withdraw any of the forgoing from the market.
All information in this document is provided "as is" without warranty of any kind, either expressed or implied, including but not limited to any implied warranties of merchantability, fitness for
a particular purpose, or non-infringement. Unitronics assumes no responsibility for errors or omissions in the information presented in this document. In no event shall Unitronics be liable
for any special, incidental, indirect or consequential damages of any kind, or any damages whatsoever arising out of or in connection with the use or performance of this information.
The tradenames, trademarks, logos and service marks presented in this document, including their design, are the property of Unitronics (1989) (R"G) Ltd. or other third parties and you are
not permitted to use them without the prior written consent of Unitronics or such third party as may own them
DOC28005-A1 12/15
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