Unitronics UniStream Installation Manual

Unitronics

1

UniStream™ CPU-for-Panel

Installation Guide
USC-P-B10

Unitronics’ UniStream™ platform comprises control devices that provide rob us t, flexi b le
solutions for industrial automation.

This guide provides basic ins tallation information for the UniStream™ CPU-for-Panel.

Technical specific ations may be downloaded from the Unitronics website .

The UniStream™ platform
comprises CPU controller s , HMI
panels, and local I/O modules
that snap together to form an
all-in-one Programmable Logic
Controller (PLC).

Expand the I/O configuration
using a Local Expansio n Kit or
remotely via CANbus.

CPU-for-Panel CPUs are Programmable Logic Controllers (PLCs), the heart of the

UniStream™ platform.
The CPU-for-Panel cannot operate independently. It must be plugged

into the back of a UniStream™ HMI panel. The pane l provid e s the C PU ’s
power source. The CPU-for-Panel co mpr i ses:

 IO/COM Bus connector for interfacing Uni-I/O™ & Uni-COM™ modules
 Isolated RS485 and CANbus ports
 Backup battery

HMI Panels

Available in
different
dimensions

A high-resolution touc h screen pro vides the operator interface for the
system and the physical foundation fo r a PLC+ HMI+I/Os all-in-one
controller.

The DIN-rail struc tur e on the panel’ s back is des igned to phys ic ally
support a CPU-for-Panel co ntro ll e r , U ni-I/O™ and/or Uni-COM™
modules.

Each panel comprises:

 AUX connector to support the CPU
 1 audio-out 3.5mm jack
 1 microSD slot
 2 type A, USB host ports and 1 Mini-B USB device port
 2 Ethernet ports, RJ45, 10/100 Mbps
 1 power input connector, 12/24 VDC

I/O Options Integrate I/Os into your system by using:

 On-board I/Os: snap onto the panel for an all-in-one configuration
 Local I/O via a Local Expans i on Kit
 Remote I/O via EX-RC1

Programming
Software

All-in-one UniLogic™ sof twar e, for har dw are configuration,
communications, and HMI /PLC applic a tio ns , a v ai lab l e as a free

download from Unitronics web site.

Use of this product is subject to a Unitronics Controller License Agreement, a copy of which can be found at http://unitronics.com/unistream/Agreements/UniLic1.pdf

CPU-for-Panel Installation Guide

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Unitronics

Before You Begi n

Before installing the dev ic e , the installe r must:

 Read and understand this document.
 Verify the Kit Contents

.

Note that the CPU-for-Panel is intend e d to be installe d o n the back of an HMI pane l.

Alert Symbols and General R e st rictions

When any of the following symbols appea r , re ad the assoc iated info rmation carefully.

Symbol Meaning Description

Danger The identified danger causes physical and property damage.
Warning T he i dentified danger could cause physical and property damage.

Caution Caution Use caution.

 All example s and diagr am s are intend e d to aid unders tand i ng , and do not guarantee

operation. Unitro nic s accepts no responsibility for actual use of this produc t b ased o n
these examples.

 Please d ispose of this pro d uc t accor ding to local and national standards and reg ulati o ns .
 This prod uc t shoul d be install e d only by qualified personnel.

 F

ailure to comply with appropriate s afe ty g uid e li ne s can cause sev ere injury or

property damage.

 Do not a tte mpt to use this device with para me ter s that excee d per mi s s ib le leve ls .
 Do not connect/dis conne c t the dev ic e whe n power is on.

Environmenta l Considera tions

 V

entilation: 10mm (0.4”) of space is required between the device top/bottom edges

and the enclosure’s walls .

 Do not install in are as with: exce ssive or conductive dust, corrosive or flammab le

gas, moisture or rain, excess ive he a t, regular impac t s hocks or excessive vibration,
in accordance with the standards and limitatio ns given in the product’s technical
specification sheet.

 Do not place in water or let water leak onto the unit.
 Do not allow debr is to fall ins ide the unit during installation.
 Install at maxim um d i s tanc e from high-voltage cables and power equipment.

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Kit Contents

 1 CPU-for-Panel
 1 lithium battery, 3V, CR2032.

The battery is installed; p ull out plastic tab
to activate it.

 1 RS485 terminal block

 1 CANbus terminal block
 1 CANbus termination resistor
 1 set of module numbering stickers.

Numbering instructio ns ar e in Uni-I/O™ &
Uni-COM™ module installation guides.

CPU-for-Panel Diagram

CPU-for-Panel Front and Rear View

1

DIN-rail clips

5

RS485 connector

2 Battery pull-tab

(remove during installatio n)

6

RS485 termination selection DIP switch

7 CANbus connector

3

Battery compartment cover

8

CPU door

4 IO/COM Bus connector, shipped

covered. Leave covered when not in
use.

9 CPU connector to panel

Installation Space Considerations

Allocate space for:

 The HMI Panel including the CPU and any module s that w ill be ins tal le d on it
 Opening the doors of the CPU and modules

For exact dimensions, please refer to the Mechanical Dimensions shown below.

CPU-for-Panel Installation Guide

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Unitronics

CPU-for-Panel Mechanical Dimensions

Side View Front View

Battery: Back-up, Installation, and Re placement

Backup

In order to preserve back-up values for RTC and system data in the event of power off , the

battery must be connected.

Battery Installation

The CPU is shipped with a battery installed , b ut with a pl as tic Batte ry pull-tab ins e rted in
the battery compartment. Pull o ut the Batte ry pull-tab d uring installation in order to

connect the battery.

Battery Replacement

 Use proper precautions to prevent Ele c tro -Static Discharge (ESD) while servicing

the battery.

Caution

 To pres erve back-up values for RTC and system data during battery

replacement, the CPU-for-Panel must be powered from the HMI Panel.

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1. Open the CPU door and remove the battery cover.

2. Remove the used battery and insert the new one, ensuring that
the polarity is aligned with the polar ity drawing as shown in the
accompanying figure.

3. Replace the battery cover.

4. Dispose of the used battery according to loca l and natio nal
standards and regulations .

Battery Polarity

Installation

 Turn off system power before connecting or disconnecting any modules or devices.
 Use proper precautions to prevent Ele c tro -Static Discharge (ESD).

The AUX connector on the back of the HMI panel provides the connec tion point for the

CPU-for-Panel, includ ing po w er .

The DIN-rail type structure on the back of the panel provides the

physical support.

1. Remove the AUX connector cover from the panel (the cov er
may be saved for future use).

2. If a Uni-I/O ™ or Uni-COM™ module, or a Local Expansion Kit is
to be connected to the CPU-for-Panel, remove the IO/COM Bus
connector cover.

3. Plug the CPU-for-Panel into the HMI Pane l AUX co nnector. If an
adjacent module is already installed , s lide the CPU-for-Panel
into place via the guide tunnels show n in the accompanying
figure.

4. Verify that the DIN-rail clips loc a te d on the top and bottom of
the CPU-for-Panel have snapped onto the DIN-rail s tructure on
the back of the panel.

Removing the CPU-for-Panel

1. Power off the HMI Panel before removing the CPU-for-Panel.

2. Disconnect the RS485 and the CANbus co nnecto rs (if rele vant).

3. Disconnect the module connecte d to the CPU (by pus hing its Bus Conne c tor loc k to the
right).

4. On the CPU-for-Panel pull the top DIN-rail clip up and the botto m clip do w n.

5. Pull the CPU-for-Panel o ut of its plac e .

CPU-for-Panel Installation Guide

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Unitronics

About the CPU’s IO/COM Bus Connector

The IO/COM Bus connector on right side of the CPU-for-Panel provides the electrical
connection point for a Uni-I/O™ or Uni-COM™ module or Local Ex pansion kit. The
connector is shipped cover ed by a protec tive cover, protecting the connector from debris,

damage, and ESD.

 Whe

n no module is connected to the CPU, its IO/COM Bus Connector Cover must

remain installed.

 Turn off syste m power before conne c ting or disconnecting modules.

9BWiring

 T

his equipment is designed to opera te only at SELV/PELV/Class 2/Limited Power

environments.

 All power s upp lie s in the sys tem must inc l ud e doub le insulati o n. Power supply

outputs must be rated as SELV/PELV/Clas s 2/Limite d Pow e r.

 Do not connec t either the ‘ Neutr al’ or ‘Line’ signal of the 110/220VAC to devic e ’s 0V

point.

 Do not touch live wire s .
 All wiri ng 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-c

heck 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 subs tanc e on stripped wire that might cause the

wire strand to break.

 Install at maxim um distance from high-voltage cables and power equipment.

15BWiring 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 inche s).

2. U

nscrew the terminal to its wides t positio n b ef or e inse rting a wire.

3. Insert the wire complete ly into the termina l to ens ure a proper conne c tion.

4. Tighten enough to keep the wire from pulling fr e e .

16BWiring Guidelines

In order to ensure that the device will operate prop er ly and to avoid el e c tro magnetic
interference:

 Use a metal cabinet. Make sure the cabinet and its doors are properly earthed.
 Use wires that are properly sized for the load.

N

OTE

For detailed informatio n, refer to the document System Wiring Guidelines , loc ate d in
the Technical Library in the Unitronic s ’ website.

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Communication Ports

 Turn off power before making any communications connections.

RS485

Use the RS485 port to cre ate a multi-drop network.

T

he CPU-for-Panel is ship pe d with a 4 pin RS485
terminal block. This co nne c tor is m arked with a pin
assignment that is identica l to the corresponding
marking on the CPU-for-Panel.

RS485
Wiring

D+ Tx/Rx+ (B)

D-

Tx/Rx– (A)

SG

Signal Ground

Functional Ground

 U

se shielded twisted-pair cable, in compliance with EIA RS485 specifications.

 When wiring each node, connect the c able 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 HMI
panel’s functional ground point.

RS485 Termination

U

se the DIP switches shown in the panel diagram
on page 3 to set the RS485 termination according
to the accompanying table.

The device is shipped with both its DIP switc he s se t
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

CPU-for-Panel Installation Guide

CANbus

Use the CANbus port for all CANbus communicatio ns inc luding integration of Remote I/Os
via EX-RC1.

The CPU-for-Panel is shipped with a 5 pin CA Nbus ter mi nal blo ck. Thi s connector is
marked with a pin assignment that is identical to the corresponding marking o n the CPU­for-Panel.

CANbus Wiring

+V CANbus Power Supply (see Note)
H CAN High

Functional Ground

L CAN Low

-V CANbus Power & Signal Common

 Use a shielded twisted-pair cable.

DeviceNet

®

, shielded twisted-pair cable

is recommended.

 When wiring each node , conne c t the

cable shield to the functional ground
point of the CANbus terminal blo ck.

 Connect the CANbus cable shield to the

system earth at only one point near the
power supply.

Dev

iceNet

®

cable connection:

N

OTE

The

CPU-for-Panel CANbus port is
internally powered and doe s not requir e
an external power-supply. T his means
that you can either connect the +V point
in the CPU’s CANbus connector to an
external power supply, or leave it
unconnected.

Do not use the +V point for any other
purpose.

CANbus Termination

Place termination resistors at each end of
the CANbus network. Resistance must be
set to 121Ω, 1/4W, 1%.

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