Woodward | 5437-1119 | ProTech-GII Safety System Module

The Woodward ProTech-GII (Model: 5437-1119) is an advanced, high-integrity overspeed safety trip module designed for critical turbomachinery applications such as steam, gas, and hydraulic turbines. Engineered to prevent catastrophic overspeed events, it provides reliable, fail-safe protection by continuously monitoring shaft speed and executing emergency shutdown commands when limits are exceeded. Built with triple-modular redundant (TMR) architecture options and robust industrial circuitry, the ProTech-GII Safety Module ensures maximum system availability, fast response times, and compliance with stringent international safety integrity levels (SIL).

Technical Specifications & Datasheet

Brand: Woodward
Model: 5437-1119
Series: ProTech-GII Series
Product Name: Overspeed Safety Trip Module
Place of Origin: United States / Global Manufacturing
Product Status: Active / Factory Original
Dimensions: 254 mm x 152 mm x 60 mm
Weight: 1.2 kg
Power Supply: 24 VDC nominal
Discontinuation Status: No (In Production)

Parameter Configuration and Modification Methods

Configuring and adjusting parameters on the ProTech-GII module is performed utilizing the secure Woodward ProTech-GII configuration software tool via a PC workstation.

Communication Connection: Connect the programming PC to the module’s front-panel service port using a standard communication cable.
Software Access: Open the ProTech Service Tool, establish a live online connection, and enter the password-protected configuration menu.
Parameter Adjustment: Modify trip speed thresholds, relay output configurations, sensor voting logic, and acceleration detection settings as dictated by turbine safety specifications.
Validation & Save: Verify all parameters against the turbine commissioning sheet, save the configuration file, and perform a trip test simulation to validate proper response.

Manual / Automatic Mode Switching

Operating modes on safety-critical overspeed trip systems are strictly governed to prevent accidental bypassing of protection functions.

Automatic Mode: The module operates continuously in full protection mode, monitoring speed sensors and standing ready to trip safety relays instantly if an overspeed condition occurs.
Manual Mode / Test Mode: Maintenance personnel can enter a supervised manual test mode to simulate speed signals, check relay operations, or perform proof tests on the trip circuit.
Switching Procedure: Entering test or manual override modes requires physical key switches or multi-level software security clearance, ensuring that protection loops cannot be compromised unintentionally during normal operation.

Frequently Asked Questions (Q&A)

Q: What is the primary purpose of the Woodward 5437-1119 module?
- A: It functions as an independent, high-integrity overspeed safety trip device designed to shut down turbines safely before damaging mechanical speeds are reached.
Q: Does the ProTech-GII support speed sensor redundancy?
- A: Yes, it accepts multiple independent speed probe inputs (such as magnetic pickup or eddy-current sensors) and utilizes voting logic to prevent nuisance trips.
Q: Can configuration parameters be changed while the turbine is running?
- A: Certain monitoring settings can be viewed online, but critical safety trip parameters are generally restricted or require specific interlocks to prevent active process disruption.