Core Functions

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

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

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

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

5. Local panel configuration and online tuning via dedicated Woodward 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 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 for 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