M91™

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M91™

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M91™

An affordable All-in-One programmable controllers: a smart PLC with a textual HMI and keyboard, plus onboard I/O configurations; expands up to 150 I/Os.

Overview

PLC

  • Shaft-encoder inputs and PWM outputs
  • Direct temperature inputs
  • Auto-tune PID, up to 4 loops
  • Date & time-based control Database
  • Full source upload

HMI

  • Up to 80 user-designed screens
  • Multilingual: supports over 15 languages and 20 graphic symbols
  • Scroll between pre-programmed recipes/menus
  • Memory and communication monitoring  via HMI – No PC needed

Communication

  • SMS messaging via GSM
  • Remote access utilities
  • PC access via MODBUS or OPC server
  • Supports MODBUS protocol
  • CANbus  (in C models only)
  • User-defined ASCII strings, enable communication with external devices
  • RS232/RS485 built-in port

I/O

U90™ Software for M91™

All-in-One software enables you to:

  • Develop your PLC and HMI applications in one environment
  • Configure hardware & communications
  • Establish modem and data communications
  • Test and debug your programs

Product Details

M91™
I/O Expansion
I/Os may be added via expansion port. Expand up to 150 I/Os
Program
Application Memory36K (virtual) Ladder code capacity
Memory Operands256 coils, 256 registers, 64 timers
Database1024 integers, (indirect access)
Operator
Panel
Type & colors STN LCD
Display2 lines x 16 characters
Keys15 keys
General
Power SupplyM91-2-R1 / R2C / T1 / T2C / UN2 : 12/24VDC
M91-2- R6C / R34 / T38 / UA2 / RA22 : 24VDC
Battery7 years typical at 25°C, battery back-up for all memory sections and RTC
ClockReal-time clock functions (date and time)
EnvironmentIP65/NEMA4X (when panel mounted)
StandardCE, UL  Many of our products are also  UL Class 1 Div 2 and  GOST certified  -  please contact Unitronics

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M91™ models - Onboard I/Os

Inputs1Outputs
ArticleSummaryDigital2
HSC/Shaft-encoder2AnalogTemperature
Measurement		Transistor 3 PWM/HSO 3RelayAnalogOperating
Voltage
M91-2-R110 Digital, 1 Analog Inputs
6 Relay Outputs
103
10kHz, 32-bit		1
0-10V, 0-20mA, 4-20mA
10-bit		NoneNoneNone6None12/24VDC
M91-2-R2C10 Digital, 2 Analog Inputs
6 Relay Outputs
103
10kHz, 32-bit		2
0-10V, 0-20mA, 4-20mA
10-bit		NoneNoneNone6None12/24VDC
M91-2-R6C6 Digital, 6 Analog Inputs
6 Relay Outputs
61
10kHz, 32-bit		 2
0-10V, 0-20mA, 4-20mA
4
0-20mA, 4-20mA
10-bit		NoneNoneNone6None24VDC
M91-2-R3420 Digital, 2 D/A1 Inputs
12 Relay Outputs
223
10kHz, 32-bit		2
0-10V, 0-20mA, 4-20mA
10-bit		NoneNoneNone12None24VDC
M91-2-T112 Digital Inputs
12 Transistor Outputs
122
10kHz, 32-bit		NoneNone12
pnp		2
0.5kHz		NoneNone12/24VDC
M91-2-T3822 Digital Inputs
16 Transistor Outputs
222
10kHz, 32-bit		NoneNone16
pnp		NoneNone24VDC
M91-2-T2C10 Digital, 2 D/A 1 Inputs
12 Transistor Outputs
123
10kHz, 32-bit		2
0-10V, 0-20mA, 4-20mA
10-bit		None12
pnp		NoneNone12/24VDC
M91-2-UN210 Digital, 2 D/A/
PT100/TC 1 Inputs
12 Transistor Outputs
122
10kHz, 32-bit		2
Thermocouple, PT100, 0-10V, 0-20mA, 4-20mA
14-bit		12
pnp		NoneNone12/24VDC
M91-2-UA210 Digital, 2 D/A/TC 1 Inputs
10 Transistor, 2 Analog Outputs
121
10kHz, 32-bit		2
Thermocouple, 0-10V, 0-20mA, 4-20mA
14-bit		10
pnp		None2
0-10V, 4 -20mA
12-bit		24VDC
M91-2-RA228 Digital, 2 D/A, 2 PT100/TC/Digital1 Inputs
8 Relay, 2 Analog Outputs
121
10kHz, 32-bit		2
0-10V, 0-20mA, 4-20mA
14-bit
2
Thermocouple, PT100		NoneNone82
0-10V, 4 -20mA
12-bit		24VDC
*Notes:
  1. In some models certain inputs are adaptable via wiring and software settings, and can function as digital, high-speed, analog and in certain models as TC or PT100.
    Adapting requires input pins. This reduces the number of digital inputs. Pin requirements:
    • Each high-speed requires 1 or 2 pins according to high-speed mode.
    • Each analog input requires 1 pin.
    • Each TC requires 2 pins per TC input
    • The first PT input requires 3 pins, and two additional pins for each additional PT input.
    Example: V91-2-UA2 offers 12 digital inputs. Implementing 2 TC inputs requires 4 pins, leaving 8 pins free. Implementing 2 PT inputs uses 5 input pins.
  2. The total number of digital inputs listed includes high-speed and adaptable inputs.
  3. The total number of digital outputs listed includes high-speed outputs.

*This page provides a general overview of Unitronics products.

For more details, please check the complete technical specifications for each product, located at the end of the page.

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I/O Expansion Modules

InputsOutputs
Expansion ModulesDigital 5HSC 5AnalogTemperature
Measurement		Weight
Measurement		Transistor6 PWM/HSO 6RelayAnalogOperating
Voltage
DigitalIO-DI8-TO88
pnp/npn		1
5kHz 16-bit		NoneNoneNone8
pnp		NoneNoneNone24VDC 9
IO-DI8-RO48
pnp/npn		1
5kHz 16-bit		NoneNoneNoneNoneNone4None24VDC 9
IO-DI8-RO88
pnp/npn		1
5kHz 16-bit		NoneNoneNoneNoneNone8None24VDC 9
EX90-DI8-RO8 38
pnp		1
5kHz 16-bit		NoneNoneNoneNoneNone8None24VDC
IO-DI1616
pnp/npn		1
5kHz 16-bit		NoneNoneNoneNoneNoneNoneNone24VDC 9
IO-TO16NoneNoneNoneNoneNone16
pnp		NoneNoneNone24VDC
IO-RO8NoneNoneNoneNoneNoneNoneNone8None24VDC 9
IO-RO16NoneNoneNoneNoneNoneNoneNone16None24VDC 9
IO-DI8ACH8 ACNoneNoneNoneNoneNoneNoneNoneNone110/220 VAC
Analog, Temperature and
Weight/Strain Measurements		IO-AI4-AO2NoneNone4
0-10V, 0-20mA, 4-20mA
12-bit		NoneNoneNoneNoneNone2
±10V
12-bit+sign,
0-20mA, 4-20mA
12-bit		24VDC
IO-PT400NoneNoneNone4
PT100/NI100/NI120		NoneNoneNoneNoneNoneNot relevant
IO-PT4KNoneNoneNone4
PT1000/NI1000
NoneNoneNoneNoneNoneNot relevant
IO-AO6XNoneNoneNoneNoneNoneNoneNoneNone6 (Isolated)
0-10V, 0-20mA, 4-20mA
12-bit		24VDC
IO-LC11
pnp		NoneNoneNone1
Loadcell / Strain gauge
2
pnp		NoneNoneNone24VDC
IO-LC31
pnp		NoneNoneNone3
Loadcell / Strain gauge
2
pnp		NoneNoneNone24VDC
IO-ATC8NoneNone8
Thermocouple, 0-10V, 0-20mA, 4-20mA
14-bit		NoneNoneNoneNoneNoneNot relevant
IO-AI8NoneNone8
0-10V, 0-20mA, 4-20mA
14-bit		NoneNoneNoneNoneNoneNoneNot relevant
XL Digital/AnalogIO-D16A3-RO1616
pnp/npn		2
30kHz 16/32-bit 8		3
0-20mA, 4-20mA
10-bit		NoneNoneNoneNone16None24VDC
IO-D16A3-TO1616
pnp/npn		1
30kHz 16/32-bit 8		3
0-20mA, 4-20mA
10-bit		NoneNone15
pnp,
1
pnp/npn		1
pnp 0.5kHz
npn 50kHz		NoneNone24VDC
EX-D16A3-RO8716
pnp/npn		2
30kHz 16/32-bit 8		3
0-20mA, 4-20mA
10-bit		NoneNoneNoneNone8None24VDC
EX-D16A3-TO16716
pnp/npn		1
30kHz 16/32-bit 8		3
0-20mA, 4-20mA
10-bit		NoneNone15
pnp
1
pnp/npn		1
pnp 0.5kHz
npn 50kHz		NoneNone24VDC
High-speed Remote I/O ModuleEXF-RC15 2,4
,10		9
pnp/npn		3
200kHz 32-bit		NoneNoneNone4
npn		4
(up to 3 PTO)
2None24VDC
*Notes:
  1. Number of supported I/Os & I/O modules varies according to module
  2. The EXF-RC15 functions as a node in a Vision UniCAN network and connects to the Vision controller via CANbus and programmed in VisiLogic. The EXF-RC15 cannot be extended as regular I/O unit.
  3. The EX90 is housed in an open casing. Only one EX90 can be connected per PLC, as a single expansion module; Expansion adapter not required.
  4. Supported by Vision series. Not supported by M91 series.
  5. The total number of digital inputs listed includes high-speed inputs.. Example: the IO-D16A3-TO16 offers a total of 16 pnp/npn inputs. You can configure I4 as a HSC and I5 as a Counter reset; this reduces the available number of digital inputs to 14.
  6. The total number of digital outputs listed includes high-speed outputs. Example: the IO-D16A3-TO16 offers a total of 16 transistor outputs. You can configure 1 to High-speed output, reducing the number of available digital outputs to 15.
  7. Functions as local adapter. Can support up to 7 I/O modules
  8. 16-bit or 32-bit, depending on the PLC
  9. Also available as 12VDC – contact us for part number

*This page provides a general overview of Unitronics products.

For more details, please check the complete technical specifications for each product, located at the end of the page.

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Document Downloads

Installation Guide

File NameDownload File
M91-2-R1Download
M91-2-R2CDownload
M91-2-R6CDownload
M91-2-R34Download
M91-2-T1Download
M91-2-T38Download
M91-2-T2CDownload
M91-2-UN2Download
M91-2-UA2Download
M91-2-RA22Download

Technical Specifications

File NameDownload File
M91-2-R1Download
M91-2-R2CDownload
M91-2-R6CDownload
M91-2-R34Download
M91-2-T1Download
M91-2-T38Download
M91-2-T2CDownload
M91-2-UN2Download
M91-2-UA2Download
M91-2-RA22Download

2D Drawings

3D Drawings

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