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3 year warranty

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The 9905-031 is a reverse-acting, high voltage Woodward 2301A series load sharing and speed control.



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  • Part Number: 9905-031
  • SKU: 9905031WO
  • Manufacturer: Woodward
  • Series: 2301A Electronic Load Sharing and Speed Controls

9905-031 Technical Specifications

Manufacturer Woodward
Series 2301A
Part Number 9905-031
Load Sharing Input 0-6 Vdc
Low Idle Speed 55% rated
Input Voltage 90-150VDC or 88-132VAC (50/60Hz)
Chassis Sheet Metal
Dimensions 15.25in W x 7.125in H x 2.5in D
Weight 1.758 kg

Product Description

General Information

The 9905-031 is a reverse-acting, high voltage model load sharing and speed control from Woodward's 2301A series. This model is meant to control generator speed and load sharing of generators which are driven by prime movers such as diesel engines, gasoline engines, gas turbines, or steam turbines. The 9905-031 has a single actuator that has a 0-200 mA  current. This model does not have a deceleration ramp.

Control Specifications

The speed sensor of the 9905-031 uses a magnetic pickup that uses a range of 0-30VAC power. This sensor has an input impedance of 100-300 ohms. The speed setting may be trimmed externally between 0-10% via a 100 ohm potentiometer. This potentiometer is internally adjustable. The actuator is rated a maximum of 7.5VDC for 0-214mA with a 35 ohm coil.

Power/Environmental Specifications

The nominal power consumption level of the 9905-031 is a maximum of 15W. The load sharing voltage is 0-6VDC. The chassis of this model is made of sheet metal and finished with a gloss powder. Inside is a single PCB. The operational temperature of the air surrounding this unit should be in a range between -40 and 85 degrees Celsius. This unit can absorb up to 60 Gs of shock.

Frequently Asked Questions about 9905-031

What modes can the 9905-831 operate in?
The 9905-831 can operate in either isochronous or droop mode.
What speed ranges are available for use with the 9905-031?
The possible speed ranges are 500-1,500Hz, 1,000-3,000Hz, 2,000-6,000Hz, and 4,000-12,000Hz.

Reviews For 9905-031

Internal Review

The 9905-031 is a reverse-acting model, which means the actuator will signal for more fuel when its voltage decreases. This is more useful than a forward-acting model if you do not wish to have a loss of voltage shut down your system and you have or plan to have a backup governor to take over. This unit is not CE marked, but is CSA marked for North American operators. -AX Control Lead Technician

Repair Services For 9905-031

Type Lead Time Price Action
Repair Service 1-2 weeks $1152

Our highly skilled technicians can repair your 9905-031. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
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