Woodward 8904-956 Digital Speed Controller

Product Brief Introduction
The Woodward 8904-956 digital speed controller is designed for prime mover speed governing, focusing on safety protection and stable speed control of standby power equipment.
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Technical Specifications

24VDC power supply, magnetic pickup speed input, proportional drive output. Operating temperature: -40℃ ~ +70℃.

Functional Features

Closed-loop PID speed control, overspeed protection, soft startup ramp, fault detection and status output.

Application Scenarios

Emergency backup diesel gensets, pumping station prime movers and unattended power supply units.

Performance Parameters

Reliable protection action, low maintenance requirement, strong environmental adaptability.

Structural Characteristics

Panel-mounted integrated controller, terminal wiring area, status indicator lamps.

Working Principle

The speed signal from magnetic pickup is converted to speed value. When speed deviates from target, the controller adjusts fuel actuator to restore stable speed.

Installation Requirements

Install in well-ventilated cabinet, prevent dust and moisture from entering the controller.

Usage Notes

Verify overspeed shutdown function periodically during routine maintenance.




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