9907-355
May 26, 2026

9907-355

Woodward 9907‑355 is a 2301A‑series low‑voltage forward‑acting electronic speed & load‑sharing governor, engineered for diesel/gas engines, steam/gas turbines and generator sets. It delivers stable speed regulation, parallel load sharing, overspeed protection and fault monitoring, widely applied in power generation, petrochemical, oil‑gas and marine heavy‑duty prime‑mover control systems.

Description

Core Functions

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

  2. PID closed‑loop control with startup ramp, actuator stroke limit, load rejection protection and overspeed test function.

  3. Accepts 4‑20 mA analog remote setpoint for speed/load adjustment, compatible with DCS/PLC systems.

  4. Forward‑acting control logic, supports proportional electric/hydraulic actuators.

  5. RS‑485 Modbus‑RTU communication for data monitoring and parameter configuration.

Electrical Specifications

  • Power Supply: 18–40 VDC (nominal 24 VDC)

  • Speed Input: Magnetic pickup (MPU)

  • Actuator Output: 0–200 mA proportional current output

  • Communication: RS‑485 Modbus‑RTU

  • Certifications: CE certified, industrial anti‑interference compliant

Environmental & Mechanical Features

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

  • Mounting: Front panel‑mount

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

Typical Applications

  • Speed‑load control for engine‑driven generator sets

  • Industrial steam/gas turbine governing systems

  • Marine multi‑genset parallel power control

  • Petrochemical and oil‑gas prime‑mover safety control


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