9907-247
May 26, 2026

9907-247

Woodward 9907‑247 is a high‑voltage powered, reverse‑acting analog speed‑load and load‑sharing controller from the classic 2301A series. It is designed for diesel/gas engines, generator sets, gas/steam turbines and heavy‑duty prime movers. It provides precise speed regulation, real‑kW parallel load sharing, overspeed protection and torque limiting, suitable for power generation, marine propulsion and oil‑gas compressor applications with high‑voltage power supply.

Description

Key Features

  1. Two control modes: isochronous (constant speed) for single‑unit stable operation; droop mode for multi‑genset parallel load balancing.

  2. Reverse‑acting output logic: Fuel increases when control signal decreases; failsafe to full‑fuel position on power loss.

  3. High‑voltage wide input power supply: 88–132 VAC / 90–150 VDC.

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

  5. Supports real‑kW load‑sharing signal, 4‑20 mA remote setpoint, RS‑485 Modbus‑RTU communication.

  6. Front‑panel adjustable potentiometers for on‑site gain & stability tuning.

Electrical Specifications

  • Power Supply: 88‑132 VAC, 47‑63 Hz / 90‑150 VDC

  • Power Consumption: ≤15 W

  • Speed Input: Magnetic Pickup (MPU), frequency range up to 12 000 Hz

  • Actuator Output: 0‑200 mA DC (reverse‑acting proportional current)

  • Communication: RS‑485 Modbus‑RTU

  • Operating Temperature: −40 °C ~ +65 °C

  • Storage Temperature: −55 °C ~ +105 °C

  • Certifications: UL Listed, CE, Class I Div 2 hazardous area compliant

Mechanical & Environmental Features

  • Mounting: Front panel‑mount

  • Enclosure: Rugged metal housing, NEMA‑rated, vibration‑resistant

  • Weight: ~4.4 kg

  • Designed for continuous heavy‑duty industrial, marine and oil‑gas operation

Typical Applications

  • Multi‑generator parallel control in power stations

  • Gas/steam turbine governing & load control

  • Marine main engine propulsion speed regulation

  • Oil‑gas field large compressor engine control systems


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