Technical Specifications Supply voltage: 24 V DC; Control input: 4–20 mA; PWM drive output for actuator; Operating temperature: -40 °C to +85 °C.
Functional Features Closed-loop current control; overcurrent protection; actuator coil fault diagnosis.
Application Scenarios Replacement spare part for engine fuel actuator driver, Woodward governor cabinet maintenance.
Performance Parameters Drive current accuracy: ±1.5% FS.
Material Composition Power drive PCB; power transistors; current sampling resistors, signal filter components.
Structural Characteristics PCB assembly with power terminals and signal input connector.
Working Principle The board receives analog command signal, adjusts PWM output current to actuator coil, monitors coil current and triggers alarm for open/short circuit fault.
Installation Requirements Install inside governor housing; connect signal input and actuator coil terminals; test output after replacement.
Usage Notes Take ESD protection when handling PCB; check actuator coil insulation before power-up.
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