Woodward 9907‑014 2301A Analog Speed Governor

Product Description

The 9907‑014 belongs to Woodward 2301A series analog speed control unit, powered by 20‑40 VDC low voltage supply. It is a chassis‑mounted electronic governor with front panel adjustable potentiometers. It receives pulse speed signals from magnetic pickup sensors and outputs 0‑200mA drive current to match Woodward proportional actuators. This analog controller adopts rugged sheet metal housing and wide temperature design, built for stable prime‑mover speed regulation under severe vibration and electromagnetic interference environments.

Product Functions

• Real‑time speed detection from magnetic pickup (MPU) sensor input
• Isochronous and droop speed regulation for diesel/gas engines and turbines
• 0‑200mA proportional current output to drive fuel or steam actuators
• Adjustable startup ramp time, fuel limit and actuator compensation via front knobs
• Overspeed and loss‑of‑speed fault monitoring with relay alarm signal
• Remote speed setting auxiliary input for external setpoint control
• Simple analog closed‑loop speed stabilization against sudden load changes

Application Scenarios

• Diesel and gas engine generator sets for standby power stations
• Small steam turbines and gas turbine prime movers
• Marine generator engine speed control systems
• Oil & gas field compressor drive engines
• Distributed power plants and cogeneration units
• Industrial prime‑mover retrofitting and governor replacement projects

Common Problems

• No speed reading: MPU probe damage, open sensor wiring or excessive sensor installation gap
• Engine speed hunting and oscillation: incorrect ramp/compensation adjustment, mechanical actuator sticking
• No actuator drive current output: internal drive circuit failure or terminal loose contact
• Unstable speed with load fluctuation: poor shielding, ground interference or aging analog components
• False loss‑of‑speed alarm: signal attenuation, damaged pickup cable or EMI noise
• Intermittent control failure: vibration loosening terminal blocks in cabinet
• Cannot reach rated speed: improper fuel limit setting or actuator current insufficient