Digital guide
You are here:
Woodward 8511-432
Product Overview
A high-torque, rotary electric actuator from the ProAct series, designed for precise control of fuel valves, throttle levers, and dampers in large industrial engines and turbines. It integrates a brushless DC motor, high-ratio gearbox, and contactless position sensor into a sealed, rugged unit, eliminating the need for hydraulic systems. The actuator accepts standard industrial control signals and provides accurate positioning for heavy-duty engine applications.
Detailed content
Technical Specifications
- Power Supply: 24 VDC (18–32 VDC operating range), 7 A maximum current
- Control Signal: 4–20 mA, 0–5 VDC, or PWM (software configurable)
- Mechanical Travel: 90° rotation (adjustable end stops, 0–120° optional)
- Torque Output: 120 Nm (88.5 ft-lb) continuous, 240 Nm peak
- Response Time: <180 ms full stroke (no load)
- Position Feedback: Integrated 4–20 mA transmitter or CAN bus (optional)
- Protection Grade: IP66 (dustproof, waterproof, oil-resistant)
- Operating Temperature: -40 °C to +85 °C
- Dimensions: 200 mm × 160 mm × 120 mm
- Weight: 6.8 kg
Functional Characteristics
- Brushless DC motor design for high efficiency, low heat, and long service life
- Contactless Hall-effect position sensor for wear-free, accurate feedback
- Built-in over-current, over-temperature, stall, and voltage protection
- Compact, foot-mounted design for easy installation in tight engine compartments
- Low power consumption compared to hydraulic actuators
- Sealed housing for resistance to vibration, oil, moisture, and chemicals
- Field-configurable rotation direction, travel limits, and control signal
Application Scenarios
Large industrial diesel generator throttle control, gas turbine fuel valve actuation, marine propulsion engine fuel rack control, industrial gas compressor guide vane adjustment, and power plant boiler damper control.
