Woodward 5437-051 ProTech Safety Relay Interface Module

Technical Specifications

Model:5437-051

Brand:Woodward

Product type:ProTech safety relay interface module

Power supply:24 Vdc

Control function:Field safety signal acquisition,relay trip output,overspeed/overtemperature protection logic,channel self-diagnosis,fault alarm

Communication:Internal safety bus

Mounting:Rack mounting

Operating temperature:-20~60℃

Relative humidity:5~95% non-condensing

Weight:3.13kg

Certification:CE,UL,SIL rated

System compatibility

5437-051 belongs to Woodward ProTech turbine safety protection system family,matched with ProTech overspeed protection controller.Widely used in gas turbine,steam turbine and generator protection cabinets.This is a discontinued legacy safety relay interface module for power unit maintenance spare replacement.

Function

5437-051 serves as Woodward ProTech safety relay interface module.It collects speed and temperature signals from field sensors,processes safety protection logic and drives trip relay outputs for turbine overspeed and overtemperature protection.It supports redundant sensor input and independent safety processing.Each channel has built-in self-diagnosis function to detect circuit failure,ensure reliable trip action under dangerous operating conditions.It is the core safety I/O component of turbine protection system.

Installation

Install 5437-051 in control cabinet rack.Complete field sensor and relay terminal wiring according to wiring drawing.Check power polarity and grounding before power-on.

Interface

‑Internal safety bus connector

‑Field signal terminal block

‑Relay trip output terminals

‑LED channel status and fault indicator

Circuit feature

Safety rated isolation circuit,equipped with ESD and surge suppression design.High reliable trip output,strong anti-interference performance for power plant cabinet environment.

Feature

5437-051 is obsolete Woodward series spare part.Typical failures include relay contact burnout,signal channel failure,communication interruption,false alarm.Check module circuit and terminal pins before replacement.This module must match corresponding ProTech safety controller,direct substitution without inspection is not recommended.

Diagnostic

When sensor signal loss,channel fault or internal failure occurs,the module triggers protection system fault alarm and upload fault information to main safety controller.

Built‑in function

Safety field signal acquisition,turbine trip relay output,overspeed & overtemperature protection,channel self-diagnosis,used as Woodward ProTech series safety relay interface module spare replacement.

Product Brief

5437-051 is Woodward old turbine series ProTech safety relay interface module for gas/steam turbine generator safety protection equipment.Confirm ProTech controller model matching before ordering.ESD protection required during handling and installation.