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Home Woodward 2301A Electronic Load Sharing and Speed Controls 9900-431

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9900-431

Q: Are there any limitations with the environment when using the 9900-431 model?

There are no environmental limitations when it comes to using the 9900-431 model, as it is rated to be used in harsh conditions. The 9900-431 model features built-in protection guards, which help guard the 9900-431 unit against radio frequency/electromagnetic frequencies, dust, vibration, and humidity. For more information on the environmental conditions that the 9900-431 model can be used in, refer to the 82390 Woodward Bulletin.

Q: How does the reverse-acting on the 9900-431 model differ from forward-acting controls?

The main difference between forward-acting and reverse-acting controls is that as the actuator voltage decreases, the actuator will call for more fuel. When a loss of voltage occurs to the actuator, it will go to full fuel. When the actuator reaches full fuel, it allows the ballhead governor to take control rather than shutting down the entire engine.

4.75 (4)
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4.75 (4)
Click a star to rate this product

The 9900-431 24-Volt Reverse-Acting Load Sharing and Speed Control

AVAILABILITY:

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Contact: 1-919-372-8413 (Intl.), 1-800-991-7026 (US), sales@axcontrol.com

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Part Number: 9900-431
SKU: WO-56912

Manufacturer: Woodward
Series: 2301A Electronic Load Sharing and Speed Controls

Description
Repairs
Warranty
Manuals

9900-431 Technical Specifications

Part Number	9900-431
Series	2301A Load Sharing and Speed Control
Manufacturer	Woodward
Position	Reverse-Acting
Load Sharing	± 5% of Rated Load with Speed Setting Matched.
Power Consumption	</= to 15 W nominal
Rated Speed	11,450 Hz
Shock Endurance	60 Gs
Speed Trim	0-100 Omega for 0-10% speed change
Vibration Resistance	4 Gs, 5 to 500 Hz

About the 9900-431

Woodwards 2301A Load Sharing and Speed Control series model 9900-431 is a 24-volt, reverse-acting control designed to be used with gasoline or diesel engines. In this reverse-acting control, the actuator typically calls for more fuel as the voltage of the actuator increases, and the reverse-acting control fuel increases as the voltage decreases. The external wiring for reverse-acting controls is indistinguishable from that of direct-acting controls. Unlike forward-acting controls, reverse-acting controls, such as this model, do not recommend a start-fuel limit. It is crucial to note that the speed range on the 9900-431 is:

factory set to that of 2000 Hz to 6000 Hz
customizable, but it is wise to leave these settings at the standard to not cause overspeed
customizable thorough individual rocker switches; for 500-1500 Hz turn rocker switch one on and have the remaining three switches in the off position

9900-431 Speed Sensor Diagnostic

Checking the speed sensor is vital when it comes to starting your control, and has two steps:

measure the voltage at terminals 28 and 29
return the setting to the standard start position of the control

The minimum voltage will be 1.0 Vrms at cranking speed and the rated speed at 30 Vrms. The 9900-431 model has a single PCB and adjustable potentiometers located on the front of the chassis. The speed potentiometers will be set according to the speed sensor frequency.

Frequently Asked Questions about 9900-431

Are there any limitations with the environment when using the 9900-431 model?

There are no environmental limitations when it comes to using the 9900-431 model, as it is rated to be used in harsh conditions. The 9900-431 model features built-in protection guards, which help guard the 9900-431 unit against radio frequency/electromagnetic frequencies, dust, vibration, and humidity. For more information on the environmental conditions that the 9900-431 model can be used in, refer to the 82390 Woodward Bulletin.

How does the reverse-acting on the 9900-431 model differ from forward-acting controls?

The main difference between forward-acting and reverse-acting controls is that as the actuator voltage decreases, the actuator will call for more fuel. When a loss of voltage occurs to the actuator, it will go to full fuel. When the actuator reaches full fuel, it allows the ballhead governor to take control rather than shutting down the entire engine.

Reviews For 9900-431

Internal Review

(5.0)

One of the excellent features of this model is that it has both adjustable and automatic start fuel limits that will regulate the maximum fuel setting while the chosen engine is starting. The adjustability helps make sure that the engine will wear down less and will also decrease the potential pollution output. Used or new 9900-431 module for both repair and replacement. - AX Control Lead Technician

Repair Services For 9900-431

Type	Lead Time	Price	Action
Repair Service	1-2 weeks	$1102

Our highly skilled technicians can repair your 9900-431. 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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