Description
🚀 Engineered for rigorous industrial environments, the Woodward 8237-1247 is a bulkhead-mounted ProTech-GII overspeed safety system. It accurately monitors turbine rotor speed and acceleration via active or passive magnetic pickups (MPUs) and executes fast shutdown commands to protect steam, gas, and hydro turbines from catastrophic overspeed or overacceleration events.
AX Control Inc.+ 1
Technical Specifications & Datasheet
⚙️ Dimensions: 330 mm x 486 mm x 153 mm
AX Control
⚖️ Weight: 12.1 kg (26 lbs 12 oz)
AX Control
🌍 Country of Origin: United States
⚡ Power Consumption: 30 W per module nominal
AX Control
🔌 Operating Voltage: 90 to 240 VAC / 100 to 150 VDC high-voltage input
🌡️ Operating Temperature: -20°C to +60°C
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🛡️ Enclosure Rating: IP56 dust and water-resistant bulkhead mount
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⏱️ Response Time: 3 ms to 12 ms trip actuation time
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🔄 Speed Range: 0.5 to 32,000 RPM monitoring capability
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🔌 Communication Interface: Modbus RTU via RS-232 / RS-485 ports
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Operating Procedures & Usage Methods
🛠️ Securely mount the bulkhead enclosure in a designated zone near the turbine set, ensuring the location minimizes excessive vibrations and shields the unit from direct weather extremes while maintaining the IP56 seal integrity.
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🔧 Connect active or passive MPU sensors to the designated input channels, verifying proper open-wire detection circuits and sensor alignments before initiating full system tests.
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📋 Configure the 2-out-of-3 voting logic, trip setpoints, and acceleration parameters via the integrated multi-key keypad and display interface to match specific turbine safety requirements.
Power Sequencing Guidelines
🔌 Startup Sequence: Energize the primary high-voltage power source (90–240 VAC / 100–150 VDC) to initiate internal diagnostic routines, verify zero error flags on the display panel, and enable safety relay outputs.
🛑 Shutdown Sequence: Isolate the high-voltage power feed to the device only after the turbine has achieved a fully stopped or safely locked-out state to prevent erratic signal behavior during normal operation.
Product Usage Instructions
📖 The ProTech-GII utilizes a triple-modular redundant architecture allowing online module replacement while the turbine operates normally, supported by plug-and-operate backplane features and module-to-module learning.
Power Duke
📖 Perform routine automated overspeed tests using the internal frequency generator to simulate overspeed thresholds, verifying that trip mechanisms respond accurately without risking physical turbine overspeed.
Power Duke
Frequently Asked Questions
💡 Q: What is the primary purpose of the 8237-1247 model? A: It functions as a robust bulkhead-mounted overspeed protection device designed to safely shut down steam, gas, and hydro turbines.
PLCMO
💡 Q: Can modules be swapped while the turbine is running? A: Yes, its triple-modular redundant design supports on-line repair and replacement of individual modules safely.
Power Duke
💡 Q: How does the unit sense speed changes? A: It uses active or passive magnetic pickups (MPUs) to monitor rotor rotation and calculates frequency changes to detect overspeed or acceleration.
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Recommended Woodward ProTech Series & Industrial Models
- Woodward ProTech-GII 8237-1240 Standard Flush-Mount Overspeed Device
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- Woodward ProTech-GII 8237-1246 Configurable Overspeed Detection System
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