8237-1369 Woodward | ProTech GII Safety System

Description

The 8237-1369 is a specialized component of the Woodward ProTech GII safety system, designed for high-speed overspeed protection and emergency shutdown of steam, gas, and hydro turbines. This unit integrates advanced Triple Modular Redundant (TMR) logic with Two-Out-Of-Three (2oo3) voting to ensure maximum reliability, preventing catastrophic mechanical failure while eliminating nuisance trips.

 

Technical Parameters

• Manufacturer: Woodward
• Model Designation: ProTech GII
• Part Number: 8237-1369
• Logic Architecture: Triple Modular Redundant (TMR)
• Input Power: Dual Redundant 18–32 VDC
• Response Time: < 40 milliseconds (Total trip time)

 

Specifications

• Vibration Resistance: Industrial turbine-mount grade
• Enclosure: IP56 Rated (Weatherproof/Dustproof)
• Communication: Modbus TCP/UDP and RS-485
• Relay Outputs: Dedicated Trip and Alarm relays
• Speed Inputs: Supports MPU (Magnetic Pick-up) and Proximity probes

 

Application Areas

• Critical steam turbine overspeed protection
• Gas turbine emergency shutdown systems (ESD)
• Hydroelectric plant safety monitoring
• Industrial compressor and expander protection
• High-availability mechanical drive systems

 

Q&A Section

• Q: What is the function of the TPS (Trip Protocol System)?
  • A: The TPS manages the sequence of events and logging for trip conditions, providing a high-resolution “First-Out” indication to identify the root cause of a shutdown.
• Q: How does the MSM (Magnetic Speed Module) interface?
  • A: The MSM handles the high-frequency pulses from speed sensors, converting them into precise digital values for the GII’s voting logic.
• Q: Can the 8237-1369 be tested while the turbine is running?
  • A: Yes, the ProTech GII architecture allows for individual channel testing without triggering a full system trip, ensuring continuous operation during maintenance.

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