WOODWARD 9907-1200 is an industrial control and electro-hydraulic conversion device manufactured by Woodward, a U.S.-based company. This product plays a critical role in aircraft engines, power generation units, and various industrial automation systems.
1. Key Features
Core Function
Essentially, the unit is a high-precision electro-hydraulic converter (CPC-II) or digital controller module. Its primary function is to convert weak electrical signals (such as 4–20 mA or 0–10 V) into precise pressure signals or speed commands that mechanical systems can execute.
High Accuracy and Safety
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Accuracy:
The conversion accuracy typically reaches ±0.5% of full scale, with a very fast response time (less than 25 milliseconds), ensuring the control system can respond instantly to engine parameter changes. -
Safety Mechanism:
The device includes built-in fail-safe mechanisms, such as an internal valve return spring. In the event of a power failure or signal loss, the valve automatically returns to a safe position, preventing mechanical damage.
Environmental Durability
The unit features a rugged aluminum alloy housing with strong resistance to corrosion and contamination, enabling long-term stable operation in harsh industrial environments.
Communication Interfaces
It supports multiple communication protocols, including RS-485 Modbus, CAN, and Ethernet, making it easy to integrate with modern Distributed Control Systems (DCS) or SCADA systems.
2. Typical Application Scenarios
Aerospace
Used in aircraft engine gas turbine speed control systems. It often serves as a core module within the MicroNet Plus distributed control system (Operator Control Station) to regulate engine speed and load.
Energy and Power Generation
Widely applied in gas turbines, diesel generator sets, and large compressor units, where it controls the opening angle of the main oil valve to maintain stable system operation.
Marine Propulsion
In marine power systems, it controls the propeller pitch or fuel valve, ensuring safe and efficient vessel operation.