Honeywell 2MLQ-TR2B Digital Output Module

The Honeywell 2MLQ-TR2B is a high-precision digital output module tailored for industrial automation environments that demand reliability, speed, and seamless system integration. Engineered with Honeywell’s robust control platform in mind, this module provides reliable output signal control for a variety of field devices such as solenoids, relays, alarms, and indicator lights.

Compact in size but powerful in performance, the 2MLQ-TR2B is designed to integrate smoothly into both centralized and distributed control systems. It delivers consistent output switching while maintaining electrical isolation, ensuring safety, longevity, and resistance to noise and surges in industrial settings.

Technical Specifications

Product Applications

The 2MLQ-TR2B digital output module is suitable for a broad range of industrial applications, particularly in systems that require real-time output switching for controlling external devices. Common use cases include:

• Factory Automation Systems

  Controls output to machine actuators, indicator lamps, and signaling devices.

• Process Industries (Chemical, Oil & Gas)

  Used to activate solenoid valves, pumps, and alarms as part of process control loops.

• HVAC and Building Management Systems

  Switches relays for controlling fans, dampers, lighting, and other infrastructure components.

• Energy and Utilities

  Operates circuit breakers, load controllers, and alarms within substation and grid applications.

• Water and Wastewater Management

  Manages output control for pumps, gate valves, and level alarms in treatment facilities.

Product Advantages

• Compact Design with Full Functionality

  Small footprint (22 x 124 x 126 mm) makes it ideal for use in tight control cabinets.

• Fast Response and High Accuracy

  Sub-millisecond response time ensures timely switching of critical outputs.

• High Output Protection

  Each channel features built-in protection against overload and short-circuits, improving field reliability.

• Optical Isolation

  Protects the control system from voltage transients and electromagnetic interference.

• Ease of Integration

  Fully compatible with Honeywell backplane systems, allowing plug-and-play installation and configuration.

• Low Power Consumption

  Optimized circuit design reduces power draw, contributing to energy efficiency.

• Diagnostic LEDs

  Per-channel indicators simplify troubleshooting and maintenance.

Frequently Asked Questions (FAQ)

Q1: What is the output type of the 2MLQ-TR2B module?

A1: It is a digital (discrete) transistor output module, designed to switch 24 VDC devices.

Q2: How many output channels does this module support?

A2: Typically, it supports 8 individual output channels.

Q3: Can the module be used with inductive loads like solenoids?

A3: Yes, but proper suppression (e.g., flyback diodes) is recommended to protect the output circuitry.

Q4: What kind of isolation does the module offer?

A4: It provides optical isolation between field outputs and internal logic.

Q5: How is the module powered?

A5: It draws power from the Honeywell backplane it is mounted on.

Q6: Is this module hot-swappable?

A6: Hot-swapping depends on the system design. In many Honeywell systems, safe replacement can occur without shutting down the system.

Q7: What kind of status indication is available?

A7: Each output channel features an LED for indicating ON/OFF status and possible faults.

Q8: What is the recommended operating environment?

A8: Temperature between -20°C and 60°C, with 5% to 95% non-condensing humidity.

Q9: Is the 2MLQ-TR2B CE or UL certified?

A9: Yes, it meets CE and UL standards for industrial control equipment.

Q10: Can this module be integrated into a DCS system?

A10: Absolutely. It is designed for use in Honeywell DCS platforms and supports distributed architectures.