8444-1067
May 26, 2026

8444-1067

Woodward 8444‑1067 is a ProAct Series Digital Speed Controller (Electronic Governor) designed for diesel and gas‑engine driven generator sets, marine prime movers and industrial engines. It integrates high‑precision closed‑loop speed regulation, direct PWM drive for fuel‑control actuators, overspeed protection and fault self‑diagnosis. With fast dynamic response, robust anti‑interference performance and wide‑temperature adaptability, it is widely applied in power generation, oil & gas, mining and heavy‑duty marine environments.

Description

Core Functions

  1. Precise closed‑loop speed control for stable frequency under varying load conditions

  2. Direct PWM driving for Woodward fuel‑control actuators

  3. Built‑in overspeed protection, fault diagnosis and alarm output

  4. Supports isochronous mode for standalone gensets and droop mode for parallel‑running units

  5. Remote speed setpoint via 4‑20 mA analog input

  6. Parameter configuration by dedicated Woodward PC tuning software

Electrical Specifications

  • Power Supply: 24 VDC (wide‑range input: 18–40 VDC)

  • Speed Input: Magnetic Pickup (MPU) sensor signal

  • Actuator Output: PWM drive signal for fuel‑control actuators

  • Analog Input: 4‑20 mA for remote speed reference

  • Communication: Serial interface for monitoring and parameter adjustment

  • EMC: Industrial‑grade electromagnetic interference resistance

Environmental & Mechanical Features

  • Operating Temperature: −40 °C ~ +85 °C

  • Vibration & Shock: Compliant with marine and heavy‑duty industrial standards

  • Mounting: Panel‑mount installation

  • Enclosure: Rugged metal housing, dust‑proof and shock‑resistant

Typical Applications

  • Diesel & gas engine generator sets

  • Marine auxiliary power and propulsion systems

  • Oilfield, mining and industrial prime movers

  • Continuous‑run and emergency backup power supply systems


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