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Woodward 9907-575

  • Product Name (reference):​ 505/505E Digital Turbine Control
  • Product Introduction:​ A 32-bit microprocessor-based digital control unit for steam turbines, field-configurable for speed, load, extraction/admission pressure, and cascade control.
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Detailed content

  • Technical Specifications (reference 505/505E):​
    • Power: 18–32 Vdc, 90–150 Vdc, 88–132 Vac, or 180–264 Vac (47–63 Hz)
    • Operating Temperature: –40 to 70°C
    • Humidity: 5–95% RH non-condensing
    • Vibration: 2 g; Shock: 15 g, 11 ms
    • Communication: 2 × Modbus (RS-232/422/485, ASCII/RTU)
    • Speed Sensing: 2 MPU or proximity probes, 0.5–15 kHz
    • PIDs: Speed/Load (dual dynamics), Auxiliary, Cascade
    • Protection: Integral overspeed logic, 10 first-out shutdown inputs, failsafe shutdown
  • Functional Features:​ Three PIDs (Speed, Auxiliary, Cascade); critical speed avoidance; speed control; cascade control; overspeed test; valve limiting; frequency control; Modbus communications; accepts 4–20 mA speed command from DCS.
  • Application Scenarios:​ Steam turbine control for power generation and mechanical drive; ship propulsion; offshore platform backup power.
  • Installation & Usage Notes:​ Mount in panel; use pluggable terminal blocks for easy wiring; independent overspeed trip mandatory; read full manual before installation or service.

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