Technical Overview

The 5441-689 (5441-689) is a high-density relay interface module engineered by Woodward to provide a rugged bridge between low-level PLC logic and high-power industrial actuators. This module is a core component of Woodward’s modular control architecture, designed to switch electrical loads such as solenoids, motor starters, and heavy-duty valves with precision. Featuring integrated opto-isolation, the 5441-689 (5441-689) shields sensitive controller circuitry from the electromagnetic noise and transient voltage spikes commonly found in power generation and heavy manufacturing environments.

Detailed Technical Specifications

The following parameters define the electrical and mechanical profile of the 5441-689 (5441-689):

• Channel Density: 13 independent, isolated relay circuits for multi-load management.

• Control Interface: Supports both digital input sensing and industrial-grade relay outputs.

• Communication Protocols: Native Modbus RTU support for seamless SCADA integration.

• Physical Ports: Dual-interface capability featuring RS-232 and RS-485 serial ports.

• Programming Compatibility: Supports standard Ladder Logic (LD) and Structured Text (ST) via Woodward-compatible configuration tools.

• Signal Protection: Full opto-isolation between the control logic and field-side power.

• Environmental Limits:

• Operating Temperature Range: -20°C to +60°C.

• Construction: Industrial-hardened chassis for vibration and EMI resistance.

• Physical Dimensions:

• Footprint: 483 mm x 310 mm x 105 mm (Standard Rack/Panel Mount).

• Net Weight: 1.96 kg.

Industrial Applications

The 5441-689 (5441-689) is widely deployed in mission-critical sectors where fail-safe switching is mandatory:

• Power Generation: Automating the activation of turbine cooling fans, fuel pumps, and auxiliary generator systems.

• Process Control: Interfacing with pneumatic actuators and heavy-duty valves in chemical processing and water treatment facilities.

• Heavy Manufacturing: Managing high-cycle switching for conveyor systems, hydraulic presses, and robotic work cells.

• SCADA Networking: Acting as a remote I/O node that reports real-time relay status to supervisory systems via Modbus.