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M91-2-T38 Unitronics M91 Textual display and keyboard HMI and PLC onboard I/Os expands up to 150 I/Os
Unitronics M91-2-T38 Micro PLC with integrated text HMI, featuring 22 digital inputs, 16 transistor outputs, high-speed counters, PWM outputs and RS232/RS485 communications.
£581.63
Why Choose the Unitronics M91-2-T38 Micro PLC with Integrated HMI?
The Unitronics M91-2-T38 is a high-capacity Micro PLC with integrated text-based HMI, designed for industrial automation applications that require a large number of digital I/O points, high-speed control functionality and dependable machine operation. As part of the proven Unitronics M91 series, it combines PLC functionality, operator interface capabilities and onboard I/O within a single compact unit, reducing wiring complexity and lowering installation costs.
Featuring a built-in 2-line, 16-character LCD display and a robust 15-key keypad, the M91-2-T38 enables operators to monitor machine status, adjust parameters and access diagnostics directly from the controller. This integrated architecture eliminates the need for a separate HMI while providing a reliable and cost-effective automation platform.
With 22 digital inputs and 16 transistor outputs, including high-speed counters and PWM outputs, the M91-2-T38 is ideally suited to demanding machine automation applications requiring rapid response times and extensive digital control capabilities. The controller also supports communications networking and I/O expansion for increased system flexibility.
Key Advantages
- Integrated PLC and operator interface in one compact controller.
- 2-line LCD display with built-in keypad.
- 22 digital inputs and 16 transistor outputs.
- Supports high-speed counters and PWM outputs.
- Built-in RS232 and RS485 communications.
- Supports MODBUS networking and industrial integration.
- Expandable I/O architecture for future system growth.
- Ideal for machine automation and OEM equipment applications.
Key Features
- Unitronics M91 Micro-OPLC platform.
- 2-line × 16-character STN LCD display.
- 15-key membrane keypad.
- 22 digital inputs.
- 16 transistor outputs.
- 2 high-speed counter inputs up to 10 kHz.
- 2 PWM / high-speed outputs.
- RS232 and RS485 serial communications.
- MODBUS protocol support.
- Real-time clock with battery backup.
- Compatible with Unitronics U90 Ladder software.
- DIN rail and panel mounting options.
- I/O expansion support available.
High-Density Digital Control for Industrial Automation
The Unitronics M91-2-T38 is designed for applications requiring a large number of digital inputs and outputs within a compact controller. Its 22 digital inputs and 16 transistor outputs enable control of complex machinery without requiring multiple expansion modules, helping reduce panel space and system cost.
High-speed counters and PWM outputs make the controller suitable for encoder monitoring, frequency measurement, positioning systems and other motion-related applications. Combined with integrated communications and operator interaction, the M91-2-T38 delivers a complete all-in-one automation solution.
Typical Applications
- Packaging and labelling machinery.
- Material handling and conveyor systems.
- OEM machine building projects.
- Automated assembly equipment.
- Industrial production machinery.
- Pump and motor control systems.
- Building automation systems.
- General industrial automation applications.
Technical Specifications
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| Supported Protocols | Modbus RTU | |
|---|---|---|
| Product Series | Unitronics M91 | |
| Touch Technology | Keypad (non-touch) | |
| Communication | RS232, RS485 | |
| Device Type | HMI + PLC | |
| IP Rating | IP65 | |
| Series | M91 | |
| Product type | Micro PLC with integrated HMI | |
| Power supply | 24 V DC nominal | |
| Operating voltage | 20.4 to 28.8 V DC | |
| Digital inputs | 22 | |
| High-speed counter inputs | 2 × 10 kHz | |
| Digital outputs | 16 transistor outputs | |
| PWM outputs | 2 | |
| Display | STN LCD, 2 lines × 16 characters | |
| Keypad | 15 keys | |
| Communication ports | RS232 / RS485 | |
| Protocol support | MODBUS RTU | |
| Program memory | 36 KB virtual ladder memory | |
| Database capacity | 1024 integers | |
| Protection rating | IP65 / NEMA 4X when panel mounted | |
| Operating temperature | 0°C to 50°C | |
| Mounting type | Panel or DIN rail mounting | |
| Weight | Approx. 420 g |
Frequently Asked Questions
What is the Unitronics M91-2-T38 used for?
The M91-2-T38 is used for industrial automation applications requiring a high number of digital I/O points, integrated operator interaction and fast transistor output control.
How many inputs and outputs does the controller provide?
The controller includes 22 digital inputs and 16 transistor outputs.
Does the M91-2-T38 include a built-in HMI?
Yes. The controller features a 2-line LCD display and 15-key keypad for local monitoring and operation.
Does the controller support high-speed applications?
Yes. The M91-2-T38 includes high-speed counter inputs and PWM outputs suitable for encoder monitoring, frequency measurement and positioning applications.
What communication interfaces are included?
The controller includes RS232 and RS485 communication ports with MODBUS support for integration into industrial automation systems.
Trusted by Industrial Automation Engineers
Unitronics M91 controllers are widely used throughout manufacturing and OEM machinery sectors, delivering dependable PLC control, integrated operator functionality and flexible communications within a compact and cost-effective platform.
