8516-042
May 26, 2026

8516-042

Woodward 8516‑042 is a high‑performance ProAct Series Digital Electronic Governor (Speed Controller) designed for diesel and gas‑engine‑powered generator sets, marine prime movers and industrial engines. It integrates high‑precision closed‑loop speed regulation, direct PWM fuel‑actuator drive, overspeed protection and fault self‑diagnosis. Featuring fast dynamic response, excellent anti‑interference capability and wide‑temperature stability, it is widely applied in power generation, oil & gas, mining and heavy‑duty marine environments.

Description

Core Functions

  1. Precise mechanical‑hydraulic closed‑loop speed control for stable prime‑mover operation

  2. Supports isochronous (zero‑droop) for standalone units and droop control for parallel‑running gensets/turbines

  3. Built‑in overspeed protection, speed limit adjustment and start‑up fuel limiting

  4. Speed/load setpoint via 4‑20 mA or 1‑5 Vdc analog input for remote control

  5. Compatible with Woodward electronic controllers for integrated system regulation

  6. Rugged oil‑relay design for high‑temperature, high‑vibration harsh environments

Technical Specifications

  • Power/Actuation: Hydraulic oil‑pressure driven governor assembly

  • Speed Regulation Mode: Isochronous / Droop (adjustable)

  • Analog Input: 4‑20 mA, 1‑5 Vdc for remote speed/load setting

  • Operating Temperature: −40 °C ~ +70 °C

  • Rotation Direction: CCW (counter‑clockwise) standard

  • Mounting: Flange‑mount for turbine/engine integration

  • Construction: Heavy‑duty metal housing, oil‑sealed, shock‑resistant

Typical Applications

  • Steam & gas turbine power plants

  • Marine propulsion and auxiliary power turbines

  • Oilfield, refinery and mining turbine‑driven equipment

  • Industrial generator sets and critical continuous‑run power systems


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