woodward  Electro-hydraulic converter 9907-1200

The Woodward 9907-1200 is a highly specialized electro-hydraulic converter, also known as CPC-II. It is a product of Woodward (now Woodward, a part of a larger industrial controls company), designed primarily for applications in steam turbine valve control or related servo systems.

Key Features

1. Current-to-Pressure Conversion:
   • The Woodward 9907-1200 accepts a 4-20 mA current input signal.
   • It provides a precise and stable pressure output that is proportional to the input current.
2. Precision Control:
   • With advanced control algorithms and sensor technology, the 9907-1200 offers high-precision position and speed control.
   • This is crucial for industrial applications requiring precise steam valve control.
3. Enhanced Dynamic Performance:
   • As the second-generation current-pressure converter, CPC-II has improved dynamic performance.
   • It is capable of positioning single-acting steam turbine valve servos/actuators accurately.
4. Oil Pollution Resistance:
   • CPC-II addresses one of the major reliability issues affecting equipment uptime and performance: oil pollution.
   • It ensures accurate oil pressure control, which is directly related to steam turbine speed and load control, as well as reducing system mechanical wear.
5. Ease of Installation and Maintenance:
   • The Woodward 9907-1200 is designed for easy installation and maintenance.
   • Its design supports multiple communication protocols and interfaces, making it easy to integrate with other equipment.
6. Specification Overview:
   • Input Voltage: Typically 24V DC (though some references mention 125V DC).
   • Output Voltage: 24V DC.
   • Maximum Output Current: Up to 10A.
   • Operating Temperature Range: Typically -40°C to 70°C (some references mention up to +85°C or +100°C).
   • Accuracy: ±0.1% for position and speed control.
   • Response Time: ≤2ms (some references mention response times less than 1ms).
   • Control Range: Position -60° to +60°, speed 0 to 6000 RPM, and torque 0 to 10 Nm.
   • Dimensions: Approximately 120mm x 60mm x 80mm (dimensions may vary based on product usage).
   • Weight: Approximately 25 kg.

Applications

The Woodward 9907-1200 is commonly used in industries such as aviation, industrial engines, turbines, and power generation control. Its ability to provide precise and stable pressure control makes it ideal for critical applications where reliability and accuracy are paramount.