Woodward 9907‑072 is a classic 2301A series electronic speed and load‑sharing governor, designed for diesel engines, gas engines, steam turbines, gas turbines and generator sets. It delivers stable speed regulation, precise parallel load sharing, overspeed protection and fault diagnosis for prime movers in power generation, petrochemical, oil‑gas and marine heavy‑duty industrial fields.Core Functions Dual control modes: isochronous mode for single‑unit constant‑speed operation; droop mode for multi‑unit genset parallel load sharing. High‑precision PID closed‑loop control with startup ramp, actuator stroke limit and load rejection protection. Built‑in overspeed monitoring, real‑time self‑diagnosis and relay alarm outputs. 4‑20 mA analog remote setpoint input for integration with DCS/PLC systems. Forward‑acting control logic for fuel actuator driving. Electrical Specifications Power Supply: 18–40 VDC (nominal 24 VDC) Speed Input: Magnetic Pickup (MPU) sensor Actuator Output: Proportional current output Communication: RS‑485 Modbus‑RTU Certification: CE certified, industrial 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 & turbine generator sets Petrochemical, oil‑gas compressor prime mover control Marine auxiliary power generation systems Industrial prime mover governing and safety protection systems