Core Functions

1. Two control modes: isochronous mode for single‑unit constant‑speed operation; droop mode for multi‑unit parallel load sharing.

2. PID closed‑loop control with critical speed avoidance, valve stroke limitation, startup ramp control and load rejection protection.

3. Independent overspeed monitoring, real‑time self‑diagnosis, fault recording and multi‑channel relay alarm outputs.

4. 4‑20 mA analog remote setpoint input, compatible with upper‑level DCS/PLC systems.

5. Local parameter configuration and online tuning via dedicated Woodward software.

Electrical Specifications

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

• Speed Input: Magnetic Pickup (MPU) sensor signal

• Actuator Output: PWM drive signal for hydraulic/electric actuators

• I/O: Programmable 4‑20 mA analog I/O, multi‑channel digital contact I/O

• Communication: RS‑232 / RS‑485, Modbus‑RTU protocol

• Safety Certification: Class 1 Div 2 hazardous area certified, industrial‑grade anti‑interference

Environmental & Mechanical Features

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

• Mounting: Panel‑mount installation

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

Typical Applications

• Speed‑load control of engine and turbine generator sets

• Power plant, petrochemical and oil‑gas compressor control systems

• Marine auxiliary power generation prime mover control

• Industrial prime mover governing and safety protection systems