8512-135
May 26, 2026

8512-135

Woodward 8512‑135 is a Digital Speed Controller / Electronic Governor of the ProAct series, engineered for diesel and gas‑engine‑powered generator sets, marine propulsion engines and industrial prime movers. It provides high‑precision closed‑loop speed regulation, direct PWM drive for fuel‑control actuators, overspeed protection and integrated fault diagnosis. With fast response, strong anti‑interference capability and wide‑temperature stability, it is widely used in power generation, oil & gas, mining and heavy‑duty marine applications.

Description

Core Functions

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

  2. Direct PWM driving for Woodward fuel‑control actuators

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

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

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

  6. Parameter tuning via dedicated Woodward PC configuration software

Electrical Specifications

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

  • 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 port 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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