Product Description

The 5441-693 is a high-reliability relay output module developed by Woodward for the MicroNet control platform. It functions as a discrete dry-contact interface, allowing the control system to actuate high-power field devices such as motor starters, solenoids, breaker coils, and alarm circuits while maintaining full electrical isolation from sensitive logic electronics.

Designed for synchronization, sequencing, and shutdown logic, the 5441-693 provides fail-safe mechanical contact closure where deterministic and safety-critical operation is required. Its rugged construction ensures stable performance in power plants, turbine control cabinets, and heavy industrial engine rooms, even under frequent switching cycles.

Technical Specifications

Application

The 5441-693 is widely used in turbine control and heavy machinery governor systems, particularly in:

• Emergency Shutdown (ESD) logic

• Generator breaker trip circuits

• Auxiliary pump and lube oil system sequencing

• Alarm and annunciation outputs

• Synchronization permissive circuits

It is especially suitable for applications requiring mechanical relay outputs for safety compliance, redundancy architectures, or high inductive loads.

Technical FAQ

Can the 5441-693 be used in a TMR (Triple Modular Redundant) system?
Yes. The module is fully compatible with MicroNet TMR systems and is commonly used in 2-out-of-3 voting logic for safety-critical relay outputs.

Does the module include internal fuse protection?
While board-level protection may be present, external fusing of field loads is strongly recommended to protect relay contacts and ensure long-term operational reliability.