The Woodward 505E 9907-167, also cataloged as the 9907-167 Digital Governor, operates as a dedicated hardware component for steam turbine extraction and admission control within Woodward control platforms.

Hardware Specifications

Actuator Loop Feedback Response and Thermal Dissipation Profiles

Operating on a wide 10-30 VDC power supply stage, the 505E 9907-167 digital governor evaluates real-time steam turbine extraction/admission telemetry and speed frequency signals (0-400 Hz) with low latency. Internal circuit board logic balances thermal heat sink dissipation profiles across the full -40 deg C to +85 deg C operating temperature envelope. High-speed signal processing and built-in over-speed protection routines maintain deterministic actuator loop feedback response while native CAN, Modbus, and Ethernet physical links transmit supervisory telemetry across plant networks.

Frequently Asked Questions

Q: What input power voltage range is required for the Woodward 505E 9907-167 governor?

A: The governor operates on a DC power input range supporting 10 to 30 VDC.

Q: What primary steam turbine control functions are executed by this hardware?

A: The module is engineered specifically for digital speed control, over-speed/over-load protection, and extraction/admission steam regulation.

Q: Which fieldbus and networking protocols are supported on the module?

A: The digital governor supports CAN, Modbus, and Ethernet communication interfaces for network integration.

Field Installation Guidelines

• Isolate all incoming 10-30 VDC power sources prior to connecting or servicing wiring terminals.
• Use shielded twisted-pair cabling for all speed sensor, Ethernet, CAN, and Modbus serial lines to suppress high-frequency noise.
• Connect all cable shields to a dedicated cabinet earth grounding bus using low-impedance connection hardware.
• Maintain adequate surrounding enclosure clearance to preserve natural convection cooling across heat sink surfaces within the operating temperature range.