WOODWARD 3522-1009 EM-300 All-Electric Actuator

Product Brief Description

Woodward 3522-1009 EM-300 is a heavy-duty all-electric brushless servo actuator for prime mover fuel valve control. It features a 3-phase brushless AC motor paired with two-stage planetary reduction gearing, delivering high torque rotary output over 40° stroke. It requires the Woodward EM-Driver servo drive for position command processing. Eliminating hydraulic oil systems, this actuator is widely used as a spare part for gas engines, diesel generator sets and small turbines.

Product Features & Functions

• Three-phase brushless AC motor with two-stage planetary gearbox for high output torque
• 40-degree rotary travel, integrated resolver plus multi-turn potentiometer for high-precision position feedback
• Closed-loop position control responding to position commands from EM-Driver unit
• All-electric construction; no hydraulic oil, seals or piping required, lowering maintenance costs
• Built-in mechanical travel limit stops and overload protection against jamming conditions
• Compatible with Woodward EM-Driver, configurable via Woodward PC service software
• High vibration and shock resistance, suitable for engine-mounted installation
• Continuous position status feedback and fault diagnostics sent back to the servo driver

Application Scenarios

• Gas engine and diesel genset fuel rack / throttle valve control
• Small steam turbine and gas turbine fuel control valves
• Cogeneration CHP plants and on-site captive power stations
• Oil & gas compressor skid prime mover control
• Retrofit projects replacing older hydraulic actuators

FAQ