Overview

The Woodward 5441-689 PLC Relay Module is engineered to provide precise switching and control of electrical loads such as motors, valves, and solenoids. It is part of Woodward’s modular control system architecture, supporting flexible integration with PLCs, DCS platforms, and supervisory systems.

This module includes both digital input and output capabilities. It converts TTL-level signals into industrial-grade relay outputs, ensuring compatibility with actuators and field devices. Moreover, it supports RS-232 and RS-485 serial communication and is fully compliant with Modbus RTU protocol, enabling seamless data exchange with host controllers.

In addition to its hardware features, the 5441-689 supports user-defined control logic via ladder diagrams or structured text programming. Its internal diagnostics and fault monitoring functions enhance system reliability and simplify troubleshooting.

Therefore, this module is widely used in power generation, process control, and heavy manufacturing environments where robust relay control and system interoperability are essential.

Technical Data

Typical Applications

• Power Generation Systems: Controls auxiliary motors, pumps, and valves in turbine and generator setups.

• Process Automation: Interfaces with sensors and actuators in chemical, water treatment, and refining plants.

• Industrial Machinery: Manages switching operations for conveyors, presses, and robotic systems.

• Building Automation: Supports HVAC, lighting, and access control systems.

• SCADA Integration: Communicates with supervisory systems via Modbus RTU for real-time monitoring.

For instance, in a power plant, the 5441-689 module can activate cooling fans and fuel pumps based on PLC logic. In addition, its opto-isolated design protects control circuits from electrical noise and transient voltages.

FAQ

Q1: What type of loads can the 5441-689 control?
It can switch motors, solenoids, valves, and other industrial actuators via relay outputs.

Q2: Does it support Modbus communication?
Yes, it supports Modbus RTU over RS-232 and RS-485 interfaces.

Q3: How many relay channels are available?
The module includes 13 independent relay circuits.

Q4: What programming methods are supported?
It supports ladder logic and structured text programming via compatible tools.

Q5: What industries use this module?
Industries include power generation, process control, manufacturing, and building automation.