Digital guide
You are here:
Woodward 9907-484
Product Name: 505/505E Series Digital Microprocessor Turbine Governor Module
Product Introduction: The 9907-484 is a high-performance digital microprocessor-based governor module belonging to the Woodward 505/505E series. It is specifically designed for the precise control and monitoring of industrial turbines, such as steam turbines, gas turbines, turbo-generators, and turboexpanders.
Detailed content
Technical Specifications:
- Power Supply: +24 VDC, 1 A
- Contact Inputs: 16 (4 dedicated, 12 programmable)
- Programmable Current Inputs: 6 (4–20 mA)
- Analog Output Signal: 0–10 V DC
- Communication: RS-232 / RS-422 with Modbus protocol
- Operating Temperature: -20 to +60 °C
- Storage Temperature: -40 to +85 °C
- Humidity: 95% RH at 20–55 °C for 48 hours without damage
- Dimensions: 14 in wide × 11 in high × 4 in deep
- Enclosure Protection: IEC 60529 IP56
Functional Features: Achieves accurate regulation of turbine speed and load by driving steam inlet valves through split-range actuators. Integrates advanced PID control algorithms and multiple protection mechanisms, including critical speed avoidance, valve limiting, and emergency shutdown functions. Equipped with a 30-key multi-function keypad and a two-line 24-character display for menu-driven on-site programming.
Application Scenarios: Suitable for power generation, oilfield driving equipment control, and waste heat recovery systems. Its IP56 protection rating allows it to operate stably in harsh industrial environments such as power plants, petrochemical factories, and offshore platforms.
Structural Features: The module is housed in an enclosure with IEC 60529 IP56 protection rating. It features a 30-key multi-function keypad and a two-line 24-character display.
Working Principle: The module drives steam inlet valves through split-range actuators to achieve accurate regulation of turbine speed and load. It integrates advanced PID control algorithms for precise control.
Installation Requirements: Supports dual independent Modbus communication links for system integration.
Usage Precautions: Ensure proper configuration to prevent equipment damage. Verify all connections and settings before operation.
