Woodward 8561-631 Electromechanical Actuator

Product Brief Introduction Heavy-duty electromechanical actuator for prime mover fuel and gas flow regulation, variant model of 8561-630 series. It executes stroke adjustment according to governor control signals and feeds back real-time position signal to form closed-loop speed control.
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Technical Specifications 24VDC control power supply; integrated position feedback sensor; reinforced mechanical transmission structure. Operating temperature: -40℃ ~ +85℃.

Functional Features Linear stroke regulation; real-time position feedback; upper/lower stroke limit protection; overload anti-jam protection.

Application Scenarios Large bore diesel engine, stationary gas engine genset fuel control loops.

Performance Parameters Rapid dynamic response, high positioning accuracy, strong vibration resistance, long service life.

Structural Characteristics Heavy metal enclosure, internal coil and precision transmission parts, independent wiring terminals for command input and feedback output.

Working Principle The actuator receives electrical control signal from governor board, converts electric energy into mechanical displacement to adjust fuel rack. The built-in position transducer feeds stroke value back to controller for continuous closed-loop correction.

Installation Requirements Rigid installation on valve or fuel pump body; keep mechanical linkage free of binding; shielded cable for feedback signal.

Usage Notes Perform stroke calibration after installation; check mechanical lubrication and wear during maintenance cycle.




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