Woodward 9905-462 Product Introduction and Technical Specifications
Brand: Woodward
Model: 9905-462
Product Name: 505E Digital Steam Turbine Governor
Overall Dimensions: 356 mm × 279 mm × 102 mm
Weight: Approximately 4.13 kg
Operating Temperature: -20°C to +60°C
Storage Temperature: -40°C to +85°C
Relative Humidity: 5% to 95% non-condensing
Place of Origin: United States
HS Customs Code: 85389000
Electrical Specifications: It operates on 24 VDC power supply with typical current draw of 1 A. The controller has 8 digital inputs, 8 digital outputs, 6 analog inputs and 6 analog outputs, plus two dedicated actuator drive outputs. It accepts magnetic pickup speed signals and standard 4–20 mA analog process signals. An RS485 communication port is available for parameter configuration and data exchange with Woodward service software.
Mechanical and Protection Features: IP20 protection class for cabinet installation. It is designed for panel mounting, fitted with a front two-line LCD screen and operation keypad for local monitoring and parameter adjustment. The rugged circuit assembly is built to tolerate vibration inside turbine control cabinets.
Core Characteristics: It supports multiple control modes including speed control, load control and process pressure control, and provides split-range control for extraction and admission steam turbines. Configurable overspeed protection and internal fault diagnostics are embedded in the firmware. The local HMI allows operators to check operating status and adjust parameters on site without a computer. Event and fault logs are stored for post-incident analysis. Strong electromagnetic compatibility ensures stable performance in electrically noisy power plant environments, and serial communication supports remote monitoring and tuning for turbine upgrade and new control projects.
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