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Woodward 9902-419
Product Name: ProAct Family Electric Actuator.
Product Overview: The 9902-419 belongs to the Woodward 9902 family, which primarily encompasses ProAct electric actuators with integral drivers for engine-mounted control functions. It is designed for fuel rack positioning, timing control, throttle valve, and wastegate positioning.
Detailed content
Technical Specifications: (Based on ProAct family platform documentation)
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Output Shaft: 0.625-36 serrated tooth terminal shaft
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Rotary Output Travel: 72.5° enabling direct coupling to butterfly valves
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Command Signal Input: Analog 0–5 Vdc or 4–20 mA, CAN, or PWM; primary and backup command inputs with automatic failover
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Position Indication: Analog 0–25 mA output
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Communication: CAN-based
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Configuration: Field-programmable via PC and Woodward ProAct Service Tool (P/N 9927-2636)
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Diagnostic Event Log: Yes
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Current Limiting: Based on driver electronics temperature
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Discrete Output: Fault annunciation
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Discrete Input: Force low-power standby mode
Functional Features: Extremely fast, bidirectional, electronically positioned actuation in both directions; fully electric with no external drive or hydraulic supply; integral driver compatible with a broad range of control systems; configurable parameters for tailoring to varied applications; CAN communications; advanced diagnostics; optional rotation scale and indicator.
Application Scenarios: On-engine control of fuel rack positioning, timing control, throttle valves, and wastegate positioning for reciprocating engines and gas turbines.
Material Composition: Industrial metallic actuator housing with central connector and mounting bracket; 0.625-36 serrated tooth terminal shaft.
Structural Characteristics: On-engine base- or flange-mountable design; withstands high levels of vibration and temperature extremes; Model IV is base-mounted only.
Working Principle: The actuator accepts a position command signal from a speed control or system controller. The integral digital driver positions the output shaft electronically in both directions. An eleven-point curve function provides means to create non-linear output behavior. The actuator monitors all available internal and external signals and annunciates detected faults through a discrete output.
Installation Requirements: Mount on-engine per Woodward ProAct mechanical drawings; wiring must follow prescribed signal wiring practices with shielded cable; configure and calibrate to the specific engine using the Woodward ProAct Service Tool communicating via CAN bus with appropriate USB-to-CAN adapter.
Usage Notes: Must be configured and calibrated to the specific engine before operation; use of the actuator outside specified limits constitutes misuse and excludes warranty; the prime mover must have an independent overspeed shutdown device; wear appropriate PPE during installation and service.
