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Woodward 9907-537

  • Product Type (reference):​ Digital Turbine Control (505E-class)
  • Product Introduction:​ Microprocessor-based digital controller for steam turbines, including single-extraction and/or admission applications.
  • Technical Specifications (reference 505E):​
    • Power Input: 18–32 Vdc, 90–150 Vdc, 88–132 Vac (47–63 Hz), or 180–264 Vac (47–63 Hz)
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Detailed content

    • Speed Sensing: 2 MPUs (1–30 Vrms) or proximity probes (24 Vdc provided), 0.5–15 kHz
    • Control PIDs: Speed/Load PID (dual dynamics), Extraction/Admission PID, Auxiliary PID, Cascade PID
    • Communications: 2 × Modbus ports (RS-232, RS-422, RS-485; ASCII or RTU)
    • Protection: Integral overspeed protection logic; 10 individual first-out shutdown inputs; bumpless transfer between control modes; failsafe shutdown logic
    • Operating Temperature: –40 to 70°C
    • Features: Integrated operator control panel with two-line LCD; field-configurable; online configuration changes; Modbus communications; sulfur-resistant conformal coating
  • Functional Features:​ Controls turbine speed, load, inlet pressure, extraction/admission header pressure; valve decoupling logic; critical speed avoidance; integrated sequencing.
  • Application Scenarios:​ Steam turbines driving generators, compressors, pumps, and industrial fans; single-extraction and admission turbine control.
  • Installation & Usage Notes:​ Mount in control panel; wire speed probes and 4–20 mA transducers per the 505E manual; ensure independent overspeed trip device is fitted; read the complete manual before servicing.

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