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M90/M91™

Series Overview

Specifications

I/O Expansions

Special Features

Software

Communication

M90/M91™ : micro PLC with text HMI

The M90/M91™ is an innovative micro-PLC (Programmable Logic Controller) with a built-in operating panel. The operating panel offers an LCD that can display two 16-character text lines, and a keypad (one line in the M90 models). The M90/M91™ series offers a variety of onboard I/O configurations, including direct temperature and weight measurement inputs; the configuration can be expanded by adding I/O Expansion Modules. The M90/M91™ is the perfect control solution for small-to-medium applications such as water treatment, automated machines, and process control.

Our PLC/HMI integrated devices:

save our customers’ programming time, wiring, and cabinet space

cut budget by reducing requirements for additional hardware

prevent you from wasting time setting up Panel-PLC communication

M90-T M90-TA2-CAN M90-19-B1A M91-2-R1 M91-2-R34 M91-2-R2C M91-2-R6C M91-2-T2C M91-2-T1 M91-2-T38 M91-2-UA2 M91-2-UN2 M91-2-RA22

M90-T

8 Digital Inputs including 1 Input which can function as either high-speed counter, shaft encoder, frequency measurer or as normal digital input

6 Transistor Outputs

1 Line x 16 characters, STN LCD, LED backlight HMI Displays

1 RS232 Communication Port

24 VDC power supply

Specifications

M90-TA2-CAN

10 Digital Inputs including 1 Input which can function as either high-speed counter, shaft encoder, frequency measurer or as normal digital input

2 Analog Input

8 Transistor Outputs

1 Analog Output

1 Line x 16 characters, STN LCD, LED backlight HMI Displays

1 RS232 Communication Port

CANbus

GSM support - enables SMS messages

24 VDC power supply

Specifications

M90-19-B1A

10 Digital Inputs including 1 Input which can function as either high-speed counter, shaft encoder, frequency measurer or as normal digital input

1 Analog Input

6 Relay Outputs

1 Lines x 16 characters, STN LCD, LED backlight HMI Displays

1 RS232 Communication Port

GSM support - enables SMS messages

24 VDC power supply

Specifications

M91-2-R1

10 Digital Inputs including 3 Inpiuts which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

1 Analog Input

6 Relay Outputs

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

12/24 VDC power supply

Specifications

M91-2-R34

22 Digital Inputs including 3 Inputs which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

2 Analog Input

12 Relay Outputs

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

24 VDC power supply

Specifications

M91-2-R2C

10 Digital Inputs including 3 Inputs which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

2 Analog Input

6 Relay Outputs

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

CANbus

MODbus

GSM support - enables SMS messages

12/24 VDC power supply

Specifications

M91-2-R6C

6 Digital Inputs including 1 Input which can function as either high-speed counter, shaft encoder, frequency measurer or as normal digital input

6 Analog Input

6 Relay Outputs

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

CANbus

MODbus

GSM support - enables SMS messages

24 VDC power supply

Specifications

M91-2-T2C

12 Digital Inputs including 3 inputs which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

2 Analog Inputs

12 Transistor Outputs 2 First Outputs can function as PWM

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

1 RS232 Communication Port

CANbus

MODbus

GSM support - enables SMS messages

12/24 VDC power supply

Specifications

M91-2-T1

12 Digital Inputs including 2 Inputs which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

12 Transistor Outputs First 2 outputs can function as PWM

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

12/24 VDC power supply

Specifications

M91-2-T38

22 Digital Inputs including 2 Inputs which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

16 Transistor Outputs First 2 outputs can function as PWM

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

24 VDC power supply

Specifications

M91-2-UA2

12 Digital Inputs including 1 Inputs which can function as either high-speed counter, shaft encoder, frequency measurer or as normal digital input

2 Analog inputs - can be used as thermocouple inputs

10 Transistor Outputs First 2 outputs can function as PWM

2 Analog Outputs

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

24 VDC power supply

Specifications

M91-2-UN2

12 Digital Inputs including 2 Inputs which can function as either high-speed counters, shaft encoders, frequency measurers or as normal digital inputs

2 Analog inputs - can be used as thermocouple or PT100 inputs

12 Transistor Outputs First 2 outputs can function as PWM

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

12/24 VDC power supply

Specifications

M91-2-RA22

12 Digital Inputs including 1 Input which can function as either high-speed counter, shaft encoder, frequency measurer or as normal digital input

2 Analog inputs - can be used as thermocouple or PT100 inputs

8 Relay Outputs

2 Lines x 16 characters, STN LCD, LED backlight HMI Displays

RS232 Communication Port

MODbus

GSM support - enables SMS messages

24 VDC power supply

Specifications

PLC

Up to 38 onboard I/Os: Digital, Analog and temperature measurement inputs, Relay or Transistor outputs

Shaft encoder inputs and PWM outputs

I/O Expansion Modules: enable up to 96 digital I/Os plus additional analog, temperature and weight inputs (number/type vary according to model)

RTC, enabling time-and-date controlled operations

24K-36K (virtual) Ladder code capacity

Functions include: math, store/load, compare, and clock functions, plus immediate read/write to I/Os, interrupts and loops

1K database

4 PID loops including auto-tune

Mounting: Panel or DIN-rail

HMI

Two 16-character text lines, LCD illuminated screen

Alphanumeric 16-key keypad, for data entry and to initiate tasks

Multilingual display- supports over 15 languages

Up to 80 user-designed screens, displays conditional messages

Display conditional text, time, date, bit status, timer & integer values (up to 64 HMI variables per application)

"List" variables: link up to 150 messages to a single variable, to add 2K's of conditional text. "List" variables allow easy scrolling between recipes/menus via the keypad

Info mode: view I/O status, integer values, and system data on the LCD display

Communications

RS232 or RS232/RS485 serial communication port

GSM/SMS support

Remote access via network GPRS, GSM, CDMA or landline modems

Data Export to/from Excel

MODBUS (master/slave)

CANbus port (model dependent)

OPC/DDE server

Our HMI/PLC programming software and software utilities are free to all Unitronics clients.

Full series comparison table

EX-A1
Local expansion adapter—used to link between the PLC and up to 8 expansion modules (no. of I/Os may vary according to model). Supports both 12/24VDC.

IO-AI4-AO2
24VDC (power supply)
4 Analog inputs, 12 bit, 0-10V, 0-20mA, 4-20mA
2 Analog outputs, 12 bit + sign, 0-10V, 0-20mA, 4-20mA.

IO-AO6X
24VDC (power supply)
6 Isolated Analog outputs, 12 bit, 0-10V, 0-20mA, 4-20mA.

IO-PT4
4 PT100 inputs, range: -50°C : 460°C (-58°F : 860°F), 12 bit.

IO-PT400
4 PT100 / NI100 / NI120 inputs,
Range PT100: -50°C : 460°C (-58°F : 860°F)
Range NI100: -50°C : 232°C (-58°F : 449°F)
Range NI120: -50°C : 172°C (-58°F : 341°F)
12 bit.

IO-PT4K

4 PT1000 / NI1000 inputs
Range PT1000: -50oC ÷ 460oC, (-58oF ÷ 860oF)
Range NI1000: -50oC ÷ 232oC, (-58oF ÷ 449oF)
12 bit

IO-ATC8
8 Thermocouple/Analog inputs (T/C: J, K, T, B, E, N, R, S, 0.1° resolution. Analog: 12/14 bit, 0-10V, 0-20mA, 4-20mA).

IO-LC1
12/24VDC (power supply)
1 Loadcell / Strain gauge input. Voltage range: ±20mV, ±80mV, execution: AC/DC
1 Digital pnp input
2 setpoint pnp outputs
(* Not supported by the M90 line).

IO-LC3
12/24VDC (power supply)
3 Loadcell / Strain gauge inputs. Voltage range: ±20mV, ±80mV, execution: AC/DC
1 Digital pnp input
2 setpoint pnp outputs
(* Not supported by the M90 line).

IO-D16A3-RO16
24VDC
16 Digital pnp/npn inputs, including 2 High-speed counters
3 Analog inputs, 10 bit, 0-20mA, 4-20mA
16 Relay outputs

3D View

IO-D16A3-TO16
24VDC
16 Digital pnp/npn inputs, including 1 High-speed counter
3 Analog inputs, 10 bit, 0-20mA, 4-20mA
16 Transistor pnp/npn outputs, including 1 High-speed output

3D View

EX-D16A3-RO8
24VDC
16 Digital pnp/npn inputs, including 2 High-speed counters
3 Analog inputs, 10 bit, 0-20mA, 4-20mA
8 Relay outputs
Adapter not required.

EX-D16A3-TO16
24VDC
16 Digital pnp/npn inputs, including 1 High-speed counter
3 Analog inputs, 10 bit, 0-20mA, 4-20mA
16 Transistor pnp/npn outputs, including 1 High-speed output
Adapter not required.

IO-DI8-TO8

24VDC
8 Digital pnp/npn inputs, including 1 High-speed counter
8 Transistor pnp outputs.
Supports Fast-response (in conjunction with Vision PLCs)

IO-DI8-RO8
24VDC
8 Digital pnp/npn inputs, including 1 High-speed counter
8 Relay outputs.

IO-DI8-RO4

24VDC
8 Digital pnp/npn inputs, including 1 High-speed counter
4 Relay outputs.

IO-TO16
12/24VDC
16 Transistor pnp outputs.

IO-DI16
24VDC
16 Digital pnp/npn inputs, including 1 High-speed counter.

IO-RO8
24VDC (power supply)
8 Relay outputs.

IO-RO16
24VDC (power supply)
16 Relay outputs.

EX90-DI8-RO8
24VDC
8 Digital pnp inputs, including 1 High-speed counter
8 Relay outputs
(This unit is housed in an open casing. Only one EX90 can be connected per PLC, as a single expansion module; EX-A1 adapter not required).

IO-DI8-TO8-L
8 Digital pnp/npn inputs, including 1 High-speed counter
8 Transistor pnp outputs.

IO-DI8-RO8-L
12VDC
8 Digital pnp/npn inputs, including 1 High-speed counter
8 Relay outputs.

IO-DI8-RO4-L
12VDC
8 Digital pnp/npn inputs, including 1 High-speed counter
4 Relay outputs.

IO-DI16-L
12VDC
16 Digital pnp/npn inputs, including 1 High-speed counter.

IO-RO8-L
12VDC (power supply)
8 Relay outputs.

IO-RO16-L
12VDC (power supply)
16 Relay outputs.

IO-DI8ACH

110/220 VAC
8 AC Inputs

Flexible PID m
Accurate process control—plus all the advantages of flexible PLC programming. M91 controllers enable you to take control with 4 built-in PID loops, including auto-tune.

Database

Log production quantities, monitor temperatures, or record any type of required data with the embedded 1024 integer database.

Shaft-encoder Inputs

Use the controller’s integral 10kHz inputs as high-speed counters, frequency measurers, or to directly connect to shaft-encoders.

PWM Outputs

Control stepper motors or PID-based applications, via PWM, with the M90/91’s onboard PWM outputs (model-dependent).

Easy Scrolling between Recipes
Simply scroll between pre-programmed recipes or menus, using the panel’s arrow keys. This enables you to choose and activate a desired task via the HMI - immediately, on-site.

Upload

Full source, password-protected upload option enables you to restore the application, as if it was just saved on your PC (including Comments and symbols).

Temperature & Weight measurement

Onboard direct temperature inputs (PT100 or Thermocouple) give you the ability to control temperature-based applications,
Loadcell I/O Expansion Modules enable you to hook up weight/strain inputs and achieve accurate measurements—no additional hardware required.
(M91 series only, features are model-dependant)

Multilingual Display
Our PLC textual displays support over 15 languages. Graphical displays support any language, according to the fonts installed in your version of Windows.

Print Utility
Log system data or events-on paper. Unitronics PLCs can send scheduled or event-provoked messages to a serial printer, either directly or via modem.

Time-based Control
Do you need a specific task to be performed at a specific time and date? Simply mark the hour, date or weekday in the PLC software—and you have created time-based control in 3 clicks.

Information Mode

Press the key on the operator panel to enter the PLC’s Information Mode, providing you with powerful diagnostic capabilities.

All-in-one software enables you to develop your PLC and HMI applications in one environment, establish modem and data communications, test and debug your programs in on-line mode, remotely access your controller, and more.

Use the Ladder editor to:

Program your control application

Click-and-drop contacts, coils, timers and function blocks
(math, logic, clock)

Implement SMS, PID, Drum, and special functions such as MODBUS and Loadcell (model-dependent)

See the Ladder editor

Use the HMI editor to:

Design your operator interface

Compose operator instructions

Assign functions to keys

Create and display variables

| See the HMI editor

Download U90 software

GSM/SMS
Remote Access
MODBUS
CANbus
OPC/DDE Server
RS232/RS485
DataXport (to Excel)

GSM/SMS

Use your cellular phone to implement real-time remote control in your application. Unitronics PLCs can send and receive SMS messages to/from any GSM cellular phone. The SMS-enabled controllers can:

Send & receive text and variable SMS messages

Route different messages to different phone numbers

Auto-acknowledge received messages

Answer data requests—from your cell phone, directly back to your cell phone

Remote Access

Use your PC to access remote PLCs via network connections, cellular, or landline modems. Unitronics’ unique Remote Access utilities enable you to remotely:

Operate the controller’s HMI panel via PC

Run, reset, or initialize a controller

Download, upload, or debug PLC programs

Read, write, and store online operand and system values

You can perform these actions via U90Ladder, or via Unitronics’ free Remote Access software utility.

MODBUS

Use serial MODBUS to create a multi-device network, and establish master-slave communication between Unitronics PLCs and any connected device that supports the MODBUS protocol (SCADA systems, servos and other peripheral devices). Any Unitronics controller in the network may function as either master or slave.

CANbus

Implement efficient distributed control by rapid inter-PLC data exchange. Use Unitronics’ CANbus protocol to integrate up to 63 PLCs into one high-speed network.

OPC/DDE Server

Unitronics’ OPC/DDE servers enable the PLC to exchange data with external applications. Use it to interface with SCADA systems, or to read/write PLC data from/to Excel, Access, or other Windows-based applications.

OPC/DDE Server software utilities are free downloads.

RS232/RS485

Use the M91’s RS232/RS485 port to:

Gain PC access to stand-alone and networked controllers

Communicate with external serial devices, such as modems and serial printers

Implement MODBUS communication

DataXport (to Excel)

This powerful software utility captures PLC application data and exports it to Excel files for logging or processing. Data is exported either directly, via network connection, or via modem in accordance with a pre-set schedule—or instantly exported in response to a user request.

DataXport is a free download.

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