Unitronics UniStream USC-C3-R20 Manuale utente

Unitronics

UniStream®

PLC

Installation Guide

USC-B3-R20, USC-B3-T20,

USC-C3-R20, USC-C3-T20

This guide provides basic installation information for specific UniStream®PLC models

with built-in I/O. Technical specifications may be downloaded from the Unitronics

website.

General Features

Unitronics’ UniStream®PLCs are DIN-rail mounted Programmable Logic Controllers

(PLCs) with a built-in I/O configuration.

The series is available in three versions: Pro, Standard, and Basic.

Note that a model number that includes:

•B10/C10 refers to Pro version (e.g. USC-B10-T24)

•B5/C5 refers to Standard version (e.g. USC-B5-RA28)

•B3/C3 refers to Basic version (e.g. only for USC-B3-T20)

Page 2 contains a comparison table detailing the features offered by the different

models. Exact features are detailed in the product specification sheets.

Power

Features

▪Built-in Trends and Gauges, auto-tuned PID, data tables, data

sampling, and Recipes

▪UniApps™: Access & edit data, monitor, troubleshoot & debug

and more

▪Security: Multi-level password protection

▪Alarms: Built-in system, ANSI/ISA standards

COM

Options

▪Built-in ports: 2 Ethernet, 1 USB host, 1 USB device port

▪Add-on ports (UAC-CB), available by separate order:

➢1 CANbus port may be added to all models

➢RS232/485 ports: according to model technical specifications

COM

Protocols

▪Fieldbus: CANopen, CAN Layer2, MODBUS, EtherNetIP and

more. Implement any serial RS232/485, TCP/IP, or CANbus

third-party protocols via Message Composer

▪Advanced: SNMP Agent/Trap, e-mail, SMS, modems,

GPRS/GSM, FTP Server/Client, Web Server, SQL, and MQTT.

▪Remote Access via any device that supports VNC.

Programming

Software

All-in-One UniLogic software for hardware configuration,

communications, PLC and HMI applications; free download.

HMI

All UniStream®PLCs can display HMI screens on the following devices:

•UniStream Display (USL)

•UniStream Modular HMI panel (USP)

•UniStream Built-in (on the panels integral to the device)

•Any device screen that supports VNC

UniStream®PLC

Unitronics

HMI

HMI screens are designed in UniLogic. In addition to the HMI

screens, UniStream®PLCs offer built-in HMI features, including:

•UniApps™: Access & edit data, monitor, troubleshoot,

debug, and more

•Security: Multi-level password protection

•Alarms: Built-in system, ANSI/ISA standards

USB Action

files

Programmers can create files in UniLogic and save them to a USB mass

storage device, such as a flash drive. This enables the end user to

implement certain actions such as to update firmware, update network

settings, download applications, extract log files and more.

Comparison

table

Feature

B10/C10

Pro

B5/C5

Standard

B3/C3

Basic

I/O Expansion via Uni-

I/O

Yes

Remote I/O Expansion

via Ethernet I/O Adapter

(URB)

Up to 8

VFD

MicroSD

Yes

No*

Add-on COM modules

System Memory

6GB

3GB

MODBUS Slaves

Unlimited

Up to 8

Ethernet/IP Scanners

Ethernet/IP Adapters

Web Server

Yes

SQL Client

Yes

MQTT

Yes

PID Loops

Data Sampler/Trends

Yes

CSV files: creating/

reading

Yes

FTP, server/client

Yes

Saving Data Tables to SD

Yes

No*

Screenshots

Yes

Sending email

attachments

Yes

USB device

(programming port)

Yes

No**

* Note that B3/C3 models do not support features requiring SD cards. In addition, Alarm

History is not retained after PLC reset.

** Note that B3/C3 models may be programmed only via Ethernet cable.

UniStream®PLC

Unitronics

Before You Begin

Before installing the device, the user 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

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.

Environmental Considerations

▪Ventilation: 10mm 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 UniStream PLC

▪1 power terminal block

▪2 I/O terminal blocks (provided only with

models comprising built-in I/Os)

▪1 Battery

UniStream®PLC

Unitronics

Product Diagram

Output LEDs

Green / Red LEDs

Front View

Status LEDs

Tricolor LEDs,

Green/Red/Orange

From top to bottom: RUN,

ERROR, USB, BATT. LOW, and

FORCE.

Note that LED indications are

listed in the product's technical

specifications..

DIN-rail clips

Clips at top and bottom

physically support the device

Input LEDs

Green / Red LEDs

Top Door,

Closed

Covers the Confirm button and

the USB Host port

Bottom

Door, Closed

Covers the internal door

protecting the battery.

Uni-COM™

Jack

Connection port for Uni-COM CB

modules*. Shipped covered;

leave cover in place when not in

use.

Top View

Ethernet

ports

Two ports for Ethernet

communications.

Input/Output

connection

points

Model-dependent. Present in

models with built-in I/O

configurations.

CONFIRM

Button

Used to implement and confirm

USB Actions.

USB Host

port

Provides the interface for

external USB devices.

Internal

Door, open

Open this to access the battery.

Bottom View

Power

Supply

Input

Connection point for the

controller power source.

Connect the Terminal Block

supplied with the kit to the

power cable.

Battery

Holder

The battery is supplied installed;

the user must remove the pull

tab during installation.

UniStream®PLC

Unitronics

* These are available by separate order.

Installation Space Considerations

Allocate space for:

▪The controller

▪I/O wiring

▪Access to ports and jacks

▪Any modules that will be installed; ensure you allow space to install/uninstall modules

Module dimensions and installation instructions are in the modules’ specifications.

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

Mechanical Dimensions

Front View

Bottom View

Mounting

Note

▪Mount on a standard DIN-rail.

▪Ensure that there is sufficient room on the left side of the device to allow for any

COM modules.

1. Push the device onto the DIN-rail

until the clips located at the top

and bottom of the unit have

snapped onto the DIN-rail.

2. When properly mounted, the device

is squarely situated on the DIN-rail

as shown below.

UniStream®PLC

Unitronics

Battery: Back-up, First Use, Installation, and Replacement

Back-up

In order to preserve back-up values for RTC

and system data in the event of power off,

the battery must be connected.

First Use

The battery is protected by the PLC’s bottom

and inner door.

The battery is supplied installed inside the

unit, with a plastic tab preventing contact.

Pull out this tab before using the device.

Battery Installation and Replacement

▪Use proper precautions to prevent Electro-Static Discharge (ESD) while servicing

the battery.

Caution

▪To preserve back-up values for RTC and system data during battery

replacement, the controller must be powered.

▪Note that disconnecting the battery halts the preservation of back-up values

and causes them to be deleted.

1. Open the bottom and inner doors.

2 If there is a battery present, remove it.

3. Slide the battery into place.

UniStream®PLC

Unitronics

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.

▪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 power supply connection point.

▪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 (4.4 in-lb).

▪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.

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 controller.

▪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 ground 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.

UniStream®PLC

Unitronics

▪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; it

is recommended to earth the shield at the PLC-side.

➢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

The controller requires an external power supply.

▪In the event of voltage fluctuations or non-conformity to voltage power supply

specifications, connect the device to a regulated power supply.

Connect the +V and 0V terminals as

shown in the accompanying figure.

Connecting Ports

▪Ethernet

CAT-5e shielded cable with RJ45 connector

▪USB Host

Standard USB Type-A plug

USC-B3-R20, USC-B3-T20,

USC-C3-R20, USC-C3-T20

I/O Connection Points

The IOs for these models are arranged in

two groups of fifteen points each, as

shown in the figures to the right.

Top group

Input connection points

Bottom group

Output connection points

The function of certain I/Os may be

adapted via wiring and software settings.

USC-B3-R20, USC-C3-R20

USC-B3-T20, USC-C3-T20

UniStream®PLC

Unitronics

Wiring the Digital Inputs

All 10 digital inputs share the common point CM0. The digital inputs may be wired together

as sink or source.

Input wiring, sink

Input wiring, source

NOTE

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 CM1.

NOTE

▪The inputs are not isolated.

▪Each input offers two modes: voltage or current. You can set each input

independently.

▪The mode is determined by the hardware configuration within the software

application.

▪Note that if, for example, you wire the input to current, you must also set it to

current in the software application.

Voltage

Differential

Single-ended

UniStream®PLC

Unitronics

Current

2-wire

3-wire

4-wire

Wiring the Relay Outputs (USC-B3-R20, USC-C3-R20)

▪To avoid risk of fire or property damage, always use a limited current source or

connect a current limiting device in series with the relay contacts

The relay outputs are arranged in two

isolated groups:

O0-O3 share the common return CM2.

O4-O7 share the common return CM3.

Increasing Contact Life Span

To increase the life span of the relay contacts

and protect the controller from potential

damage by reverse EMF, connect:

▪a clamping diode in parallel with each

inductive DC load,

▪a RC snubber circuit in parallel with each

inductive AC loadv

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