Brief Product Description

The Woodward ProTech-GII 5437-1119 is a high-reliability Triple Modular Redundant (TMR) channel module designed for the ProTech-GII turbine overspeed protection system. Serving as a core independent processing channel, this module acquires rotor speed signals from MPU sensors, executes precision speed monitoring, overspeed detection and acceleration limit logic. It collaborates with two identical modules to implement 2-out-of-3 voting safety trip logic, complying with SIL3 safety integrity level and API 670 industrial standards. Engineered with robust circuitry and comprehensive self-diagnostics, it eliminates false trips and ensures fail-safe protection for critical rotating machinery. As a discontinued legacy spare part, it is supplied as fully tested surplus and refurbished units for on-site maintenance, channel replacement and system retrofitting of existing Woodward ProTech-GII safety systems.

Core Product Functions

• Independent high-precision speed and acceleration signal processing for turbine and rotating machinery safety monitoring
• 2-out-of-3 voting logic participation to guarantee reliable overspeed trip output while preventing false safety tripping
• Real-time overspeed, over-acceleration and abnormal speed deviation detection for mechanical failure prevention
• Compatible with standard magnetic pickup (MPU) sensors for consistent field speed signal acquisition
• Built-in module self-diagnosis function to monitor channel health, circuit faults and signal anomalies in real time
• Supports hot-swap replacement, maintaining continuous system protection during single-channel maintenance operations
• Timestamped fault event logging and first-fault identification for accurate post-failure troubleshooting and analysis
• Meets strict SIL3 and API 670 safety specifications for power generation and process industry safety instrumented systems

• Provides redundant safety channel backup to enhance overall system stability and operational reliability

Application Scenarios

• Channel replacement and spare parts service for Woodward ProTech-GII series overspeed protection systems
• Steam turbine, gas turbine and hydro-turbine safety protection systems in power generation plants
• Critical compressors, expanders and high-speed rotating equipment protection in oil & gas and petrochemical industries
• Captive power stations, combined-cycle power plants and industrial power generation safety control cabinets
• Offshore platform rotating machinery safety monitoring and safety instrumented system maintenance
• Retrofit, repair and upgrade of aging legacy Woodward ProTech-GII safety protection installations

FAQ (Frequently Asked Questions)

• Q: System displays channel inconsistency fault after installing 5437-1119 module?
  A: Check module firmware version consistency, backplane connection status, system configuration parameters and complete channel calibration to match other TMR channels.
• Q: Can the 5437-1119 module work independently without other TMR modules?
  A: No, it is a dedicated redundant channel module. Complete 3-module TMR structure is mandatory to achieve standard SIL3 safety protection performance.
• Q: Does the 5437-1119 support hot-swap during normal turbine operation?
  A: Yes, it supports standardized hot-swap replacement; the remaining two channels sustain full overspeed protection during maintenance.
• Q: Is 5437-1119 compatible with older generations of Woodward ProTech systems?
  A: It is exclusively designed for ProTech-GII platforms and not compatible with conventional ProTech series protection systems.
• Q: Is WOODWARD ProTech-GII 5437-1119 available for new safety system projects?
  A: This legacy TMR protection module has reached end-of-life. Only fully-tested surplus and refurbished units are provided for existing-site maintenance and retrofit tasks.