WOODWARD 9907-014 Engine Speed Control Module Basic Information
Brand: Woodward (a top brand of turbine / engine speed control systems in the United States)
Series: 2301A Series Single-Unit Speed Controller (Speed Control)
Model Definition: 9907-014 = 2301A basic pure speed regulation board, without the function of distributing load among multiple units
Product Type: Electromechanical analog electronic speed control controller (an old-fashioned hardware potentiometer adjustment model, without a digital display)
Life Cycle: The original factory has already discontinued production (the entire 2301A series has been phased out), only new original inventory pieces and refurbished overhaul pieces are available on the market (the supply situation as of 2026)
Core Functionality
Designed for diesel generator sets, small gas engines, and small steam turbines:
Constant speed closed-loop regulation: Collects magnetic-electric speed probe (MPU) signals, automatically adjusts the opening degree of the fuel actuator, stabilizing the frequency / speed of the unit;
Multiple-turn potentiometer on the panel for manual adjustment: Gain, stability, actuator compensation, start fuel limit, etc. parameters can be adjusted on-site;
Fault safety protection: When the speed signal is lost, automatically minimizes fuel output to eliminate the risk of runaway and overspeed;
Single-unit independent operation (cannot be connected in parallel for load distribution among multiple units)
Detailed Electrical Technical Parameters Table
Parameter Item Standard Specification
Power Supply 18~40VDC (nominal 24VDC direct current power supply)
Overall Power Consumption Maximum 15W
Speed Sensor Input (MPU) 1.0~30VAC AC signal from magnetic sensor
Actuator Drive Output 0~200mA standard current output, compatible with all Woodward electromagnetic actuators
Operating Environment Temperature -40℃ ~ +70℃
Storage Temperature -40℃ ~ +85℃
Weight Approximately 1.5kg (2.5 pounds)
Installation Method Control cabinet wall mounting / embedded installation in chassis
Shell Aluminum alloy chassis (with built-in cooling), IP30 indoor cabinet protection
Certification CSA, UL industrial safety certification
Structural and Debugging Features
The front of the entire machine is arranged with 6 sets of adjustable precision potentiometers. No software computer configuration is required; pure hardware on-site debugging is possible;
The back has a plug-in terminal block: complete sets of speed signals, power supply, and actuator connection terminals;
No digital communication interface; pure local closed-loop speed regulation, unable to connect to DCS remote communication
Typical Application Scenarios
Auxiliary power generation units for ships, backup emergency diesel units, small power units for oil fields, factory self-owned power station single-unit power generation equipment for replacement of old spare parts.
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