Honeywell MLE-DR16A Master Logic Digital I/O Relay Module 24VDC

Product Introduction

• The Honeywell MLE-DR16A is a high-performance integrated I/O module for the Master Logic PLC series.
• It features 8-channel digital inputs (24VDC) and 8-channel relay outputs in one compact unit.
• Engineers utilize the MLE-DR16A to simplify wiring and save valuable cabinet space.
• This module provides robust electrical isolation to protect sensitive control logic from field-side interference.

Technical Specifications

• Brand: Honeywell
• Model: MLE-DR16A
• Series: Master Logic (ML) System
• Input Channels: 8 Points (24VDC, 4mA)
• Input Voltage Range: DC 20.4V to 28.8V (Ripple < 5%)
• Input Resistance: 5.6 kΩ
• Output Channels: 8 Points (Relay Contact)
• Rated Load Capacity: DC 24V 2A / AC 220V 2A (Resistive Load)
• Max Switching Voltage: AC 250V / DC 125V
• Frequency Response: 1ms to 100ms (Adjustable via CPU parameters)
• Mechanical Life: ≥ 20,000,000 operations
• Insulation Method: Photo-coupler (Input) and Relay Insulation (Output)
• Internal Power Consumption: 280mA
• Operating Temperature: 0°C to +55°C

Installation Guide

• Mount the MLE-DR16A securely on the PLC backplane before applying power.
• Use the 9-pin terminal block for field wiring to ensure stable connections.
• Ensure the input common terminal (COM) matches the polarity of your sensors.
• Keep high-voltage AC output cables separate from low-voltage DC input signal lines.

Debugging and Maintenance

• Monitor individual LED indicators to confirm the real-time status of each I/O point.
• The removable terminal block allows for rapid module replacement during routine maintenance.
• Use the PLC programming software to tune filter times for noisy input environments.
• Regularly inspect terminal tightness to prevent intermittent signal loss in high-vibration areas.

Compatibility and Equipment Suitability

• The MLE-DR16A is fully compatible with Honeywell Master Logic 200/200R CPU architectures.
• It integrates seamlessly into systems using standard ML series expansion bases.
• Suitable for controlling motor starters, solenoid valves, and receiving feedback from proximity switches.

Diagnostic Capabilities

• Internal Self-Test: The CPU performs continuous health checks on module communication.
• Status Monitoring: Real-time data mirroring allows for remote monitoring of output relay health.
• Signal Filtering: Intelligent input filtering eliminates false triggers from mechanical contact bounce.

Global PLC Spare HUB's Insight

• The Honeywell MLE-DR16A stands out for its high current handling in a small footprint.
• Its 2A relay contacts often eliminate the need for external interposing relays for small loads.
• Professional installers prefer this model for its reliability in diverse voltage environments.

Typical Application Scenarios

• Conveyor Control: Managing start/stop sequences and monitoring safety limit switches.
• Water Management: Operating chemical feed pumps based on tank level sensor inputs.
• Packaging Systems: Synchronizing high-speed product detection with pneumatic pusher actuators.

Shipping and Warranty

• Fast Dispatch: Orders ship within 24-48 hours of confirmation.
• Express Carriers: Global delivery via FedEx, UPS, and DHL.
• Warranty Period: 12-month comprehensive quality guarantee included.
• Packing List: 1x MLE-DR16A Module, 1x Terminal Connector.

Frequently Asked Questions

• What is the default response time for the inputs? The factory default setting is 3ms, which balances speed and noise immunity.
• Can I use this module to drive AC motors directly? It can drive small AC contactors or starters, but large motors require external power contactors.
• Does the 280mA consumption include the external load? No, this value covers only the internal logic circuit of the MLE-DR16A.

Purchasing Guide

• Verify that your PLC rack has an available slot for a 16-point combined module.
• Select the MLE-DR16A if your application requires isolated relay outputs for AC loads.
• Ensure your 24VDC power supply can handle the additional 280mA current demand.

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