8901-881
May 26, 2026

8901-881

Woodward 8901‑881 is a high‑performance ProAct Series Digital Electronic Governor (Speed Controller) applied to diesel/gas‑engine‑powered generator sets, marine propulsion engines and industrial prime movers. It adopts closed‑loop high‑precision speed regulation, direct PWM drive for fuel‑control actuators, overspeed protection and built‑in fault self‑diagnosis. With fast dynamic response, excellent anti‑interference performance and wide‑temperature adaptability, it is widely used in power generation, oil & gas, mining and heavy‑duty marine scenarios.

Description

Core Functions

  1. High‑precision closed‑loop speed control to keep stable frequency under load fluctuations

  2. Direct PWM driving for Woodward fuel‑control actuators

  3. Integrated overspeed protection, fault diagnosis and alarm output

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

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

  6. Parameter configuration through 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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