The Woodward 9907-165 is a digital control module from the 505E series, specifically engineered for the precise management of steam turbines. This unit integrates advanced digital algorithms to control turbine speed, load, and extraction pressure, ensuring operational stability and efficiency in power generation and industrial drive applications.
Built around a 32-bit microcontroller, the 9907-165 provides high-speed processing for real-time control tasks. It supports multiple control modes including speed control, load control, and extraction pressure management for single-extraction steam turbines. The module features a user-friendly interface with a 2-line LED display and a 30-key keypad for local configuration and monitoring.
The 9907-165 offers comprehensive I/O for interfacing with field devices. Analog inputs are available for speed signals and pressure transmitters, while digital inputs support discrete status monitoring. For actuator control, the module provides two dedicated actuator outputs, eight relay outputs, and six programmable current outputs, allowing flexible integration with valve positioners and other final control elements.
Control Modes: Speed, Load, Extraction Pressure
Actuator Outputs: 2
Relay Outputs: 8
Programmable Current Outputs: 6
Communication: Ethernet for DCS integration, RemoteView connectivity
Power Supply: 180–264 VAC (47–63 Hz)

This controller incorporates advanced algorithms for enhanced performance, including next-generation load rejection handling, three critical speed avoidance bands, and reverse rotation sensing with alarm capabilities. It supports network-enabled password protection for secure access and RemoteView software for virtual monitoring and control from remote workstations or mobile devices.
Designed for rugged industrial environments, the 9907-165 operates within a temperature range of -25°C to +65°C and withstands 95% humidity conditions. The module is housed in a robust enclosure measuring 356 x 279 x 102 mm and weighing less than 10 pounds. It is compliant with vibration standards for marine and industrial applications.
The Woodward 9907-165 is widely utilized in power plants, oil and gas facilities, and marine propulsion systems for controlling steam turbines driving generators, compressors, and pumps.



