Product Overview

The Honeywell MLC-DR64H is a high-density digital relay output assembly specifically engineered for the MasterLogic-50 PLC series. Combining the functions of a localized power interface and a large-scale switching array, this module provides 64 independent relay channels for the control of discrete field devices. It is designed to act as the primary execution layer for complex industrial logic, enabling the PLC to safely switch various AC or DC loads—such as solenoids, contactors, and signaling lamps—in a compact 7x14x14.5cm form factor.

This module is architected for maximum industrial uptime, featuring built-in power regulation that accepts a wide AC input range (110–220V). With its high-capacity relay contacts and extensive electromagnetic hardening, the MLC-DR64H ensures deterministic switching performance even in electrically noisy environments or plants with unstable power quality.

Technical Characteristics and Environmental Resilience

The MLC-DR64H is defined by its massive I/O density and superior protection against transient electrical phenomena.

• 64-Channel Relay Matrix: Delivers one of the highest relay densities available for the MasterLogic platform, supporting up to 3A per contact for robust industrial control.

• Wide Range Power Integration: Operates on 110V to 220V AC universal input, managing inrush currents up to 50 Apeak to protect internal circuitry during initial power-up.

• Electrical Noise Immunity: Built to withstand square wave impulse noise of ±1,500V and Electrostatic Discharge (ESD) up to 4kV, ensuring the logic remains unaffected by nearby heavy machinery.

• Electromagnetic Shielding: Rated for interference resistance from 80 to 1,000 MHz at 10V/m, maintaining signal integrity in areas with significant radio frequency or cellular activity.

• Sophisticated EFT/B Protection: Includes Electrical Fast Transient/Burst protection (2kV on the main unit) to prevent data corruption during power surges or switching transients.

• Advanced Processing Modes: Fully supports repetitive, cyclic, interrupt, and constant scan modes, allowing engineers to program via Ladder Diagram (LD) or Instruction List (IL) for tailored process control.

Technical Specifications

• Manufacturer: Honeywell

• Model Number: MLC-DR64H

• Module Type: Relay Digital Output / Power Supply Interface

• Control System: MasterLogic-50 PLC

• Output Count: 64 Points

• Contact Rating: Max 3A

• Power Supply Input: 110V – 220V AC

• Operating Temperature: 0°C to 55°C

• Relative Humidity: 5% to 95% (non-condensing)

• Dimensions: 7 x 14 x 14.5 cm

• Weight: 0.4 kg

• Condition: Brand New

Industrial Applications

The Honeywell MLC-DR64H is a versatile solution for large-scale discrete automation:

• Manufacturing Automation: Managing high-density valve banks and conveyor interlocks on high-speed production lines.

• Infrastructure Control: Supervising lighting, ventilation, and power distribution relays in commercial and industrial facilities.

• Process Machinery: Coordinating complex startup and shutdown sequences for large motors and compressors.

• Material Handling: Driving multi-point sorters and actuator arrays in automated warehouses.