Woodward 9906-230 Electronic Actuator (Fuel Actuator)

Product Description

The Woodward 9906-230 is a rotary electric fuel actuator for reciprocating gas and diesel engines, widely used with Woodward digital speed governors such as 723, 723PLUS, 701 series controls. It converts the 4–20mA / PWM control signal from governor controller into rotary mechanical output to drive engine fuel rack or throttle valve, implementing closed-loop speed and load regulation. It integrates built-in position feedback sensor for high-precision position tracking.

• Part Number: 9906-230, Brand: Woodward (USA)
• Type: Rotary proportional fuel actuator, non-hydraulic electric design
• Control signal: 4–20 mA analog signal, compatible with Woodward governor output
• Power supply: 24 VDC auxiliary power supply
• Rotation angle: Standard 75° rotary travel
• Built-in: LVDT position feedback, internal fault detection, stall protection
• Mechanical interface: Standard fuel lever connecting rod interface for engine fuel rack
• Protection class: IP54, suitable for engine compartment installation
• Shock & vibration: Designed for engine high vibration environment
• Certifications: CE, CSA Class I Div 2 for hazardous gas engine area
• Manufacturer Status: EOL legacy actuator; aftermarket supply: NOS surplus, fully tested refurbished units
• Typical gross weight: approx 2.4 kg, origin: United States
• Matched controller: 723, 723PLUS, 701 digital governor

Applications

• Gas engine, diesel engine genset speed governing and fuel control
• Biogas engine, landfill gas engine, dual-fuel engine control system
• Marine auxiliary engine, industrial stationary engine governor system
• Engine overhaul, spare replacement, retrofit of old mechanical governor to electronic governing

FAQ

Q: What is the difference between 9906-230 and ProAct actuator?
A: 9906-230 is an older generation rotary actuator, simple 4–20mA control; ProAct series is newer version with higher torque and CAN bus communication option, not pin-to-pin direct replacement.

Q: Does it need a separate driver module?
A: It can be directly driven by Woodward 723 / 723PLUS governor actuator output channel, no extra driver box required.

Q: Common failure points for this actuator?
A: Internal LVDT feedback failure, gear wear, coil open circuit, seal aging; overhaul includes feedback calibration, gear inspection and position zero adjustment.