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Woodward 8405-062
Product Name: Electro-Hydraulic Servo Actuator
Product Introduction: A high-precision electro-hydraulic actuator for turbine and engine fuel/control valve positioning, integrating servo electronics, hydraulic power, position feedback, and fail-safe mechanisms. Designed for critical turbomachinery applications requiring accurate, fast, and reliable valve control.
Detailed content
Technical Specifications:
- Input Signal: 4–20 mA (position command)
- Output Stroke: 50–150 mm (linear, customizable)
- Actuator Force: 500–2000 N (size-dependent)
- Hydraulic Supply: Integral hydraulic pump (self-contained)
- Position Feedback: LVDT (linear variable differential transformer)
- Power Supply: 24 VDC (18–32 VDC range)
- Operating Temperature: -40 °C to +85 °C
- Protection Grade: IP54 (dust/water splash resistant)
- Weight: 15–25 kg
Functional Features:
- Integral servo electronics with PID position control
- Self-contained hydraulic system (no external oil supply)
- High-resolution LVDT position feedback for closed-loop control
- Fast response time (≤ 100 ms) for dynamic valve adjustment
- Fail-safe spring returns valve to safe position on power loss
- Adjustable force and stroke limits for equipment protection
- Rugged metal housing resists vibration and extreme temperatures
- Compatible with Woodward 505/505E/NetCon controllers
Application Scenarios:
- Steam/gas turbine fuel and steam inlet valve control
- Large-bore diesel/gas engine fuel injection valve actuation
- Power plant boiler feedwater and steam bypass valve control
- Oil and gas compressor unit anti-surge and capacity control
- Marine propulsion engine fuel and exhaust valve control
