Product Overview

The Honeywell MLI-DR40SU is a high-density, multifunctional base module engineered for the MasterLogic 50 programmable logic controller (PLC) series. This unit serves as a high-capacity digital output foundation, providing 40 independent relay points capable of switching a wide variety of industrial loads. Designed to bridge the gap between low-level control logic and high-power field equipment, the MLI-DR40SU is optimized for driving solenoids, contactors, motor starters, and pilot lights in complex automation sequences.

As a core component of the MasterLogic 50 architecture, this base module emphasizes high-speed execution and electrical safety. It adheres to strict IEC international standards, featuring isolated relay contacts that protect the central processor from electrical noise and voltage transients. Its compact form factor is specifically tailored for high-density DIN-rail mounting, ensuring maximum I/O count within a minimal control cabinet footprint.

Key Technical Characteristics

• High-Density Relay Array: Features 40 robust relay output points, allowing for extensive load management from a single module location.

• Dual-Voltage Switching Capacity: Each relay point is rated for up to 2A at either 220V AC or 24V DC, providing the flexibility to handle both AC and DC field devices.

• Broad Load Compatibility: Engineered to manage resistive, inductive, and lamp loads with equal reliability, ensuring stable performance for motors and solenoids.

• Advanced Thermal Engineering: Optimized for operation in ambient temperatures ranging from 0 to 55°C, with specialized ventilation paths to ensure long-term component life.

• Integrated Diagnostics: Equipped with front-panel LED status indicators for every output point, facilitating rapid visual verification and localized troubleshooting.

• Secure Industrial Networking: Supports seamless data exchange with other MasterLogic components and external Ethernet routers, maintaining high-speed communication across the DCS.

• Galvanic Protection: Provides superior electrical isolation between the internal logic circuit and the external power stage, enhancing overall system resilience against surges.

Technical Specifications

• Manufacturer: Honeywell

• Model Identification: MLI-DR40SU

• Module Type: Digital Relay Output Base Module

• Series Compatibility: MasterLogic 50

• Number of Output Points: 40

• Relay Rating: 2A per point

• Rated Voltage: 220V AC / 24V DC

• Operating Temperature: 0°C to 55°C

• Mounting: DIN Rail / Rack Mount

• Weight: 0.4 kg

• Dimensions: 7 x 14 x 14.5 cm

• HS Code: 8537101190

• Origin: USA

Industrial Application Areas

• Discrete Manufacturing: Coordinating complex assembly line sequences and heavy-duty actuator control.

• Power & Utility Management: Managing relay-based interlocking systems and status reporting in electrical substations.

• Process Industries: Driving pump motors and valve solenoids in water treatment or chemical processing plants.

• Building Automation: Controlling lighting banks, HVAC dampers, and security interlocks in large-scale facilities.