Woodward 8405-809 ProAct 75 Series Electric Valve Actuator

Description

The Woodward 8405-809 is a ProAct 75 series electric valve actuator designed for high-precision control of butterfly valves on gas and diesel engines. This all-electric, rotary actuator provides fast, bidirectional movement, eliminating the need for hydraulic or pneumatic systems in engine-mounted throttle or bypass applications.

Specifications

• Part Number: 8405-809.
• Torque Rating: 13.6 N·m (10 lb-ft) nominal; 27.1 N·m (20 lb-ft) peak.
• Input Voltage: 18 Vdc to 32 Vdc (24 Vdc nominal).
• Maximum Rotation: 75 degrees of shaft travel.
• Power Consumption: 10 A typical; up to 30 A during peak transients.
• Input Signal: 4 to 20 mA or PWM (Pulse Width Modulation) for position command.
• Position Feedback: Integrated internal position sensor for closed-loop control.
• Operating Temperature: -40°C to +100°C.
• Protection Rating: IP56 for harsh engine environments.
• Weight: Approximately 11.8 kg (26 lbs).

Features

• High-Speed Actuation: Delivers rapid response times for critical engine speed and load control, ensuring stability during sudden transients.
• All-Electric Design: Removes the complexity and maintenance requirements associated with hydraulic fluid lines and oil leaks.
• Brushless Technology: Utilizes a brushless DC motor to provide a long service life and high reliability in high-vibration engine-room settings.
• Bi-Directional Capability: Provides active control in both directions for precise throttle positioning and quick shut-down functions.
• Compact Footprint: Engineered for direct mounting on the engine or manifold, reducing the need for complex mechanical linkages.
• Configurable Dynamics: Parameters such as gain and stability can be tuned via Woodward software to match specific valve and engine characteristics.
• Fault Detection: Includes internal diagnostics to monitor for over-temperature, low voltage, and position feedback errors.