WOODWARD 3522-1004 EM-300 All-Electric Actuator

Product Brief Description

Woodward 3522-1004 EM-300 is an all-electric brushless servo actuator designed for prime mover fuel control. It integrates a three-phase brushless AC motor and two-stage planetary gearbox, delivering high torque rotary output up to 40 degrees travel. It works with Woodward EM-Driver to receive position commands from speed controllers, eliminating hydraulic oil systems. Widely used as replacement spare part for gas engines, diesel gensets and small turbines.

Product Features & Functions

• Brushless AC motor with two-stage planetary reduction gear for high output torque
• 40° rotary stroke, built-in high-resolution position feedback sensor
• Closed-loop position control responding to command signals from governor controllers
• No hydraulic fluid required; all-electric design reduces maintenance and leakage risk
• Configurable travel limits, stop pins and breakaway protection against mechanical overload
• Compatible with Woodward EM-Driver series servo drive modules
• Wide operating temperature range and high vibration resistance for engine cabinet mounting
• Position status monitoring and fault reporting back to the drive controller

Application Scenarios

• Gas engine and diesel generator set fuel valve control
• Small steam turbine and gas turbine fuel or governor actuation
• Island power plants, CHP and cogeneration facilities
• Oil & gas compressor package prime mover control
• Field retrofit projects replacing old hydraulic actuators

FAQ