9900-432

About the 9900-432

The 9900-432 is a high-voltage, forward acting 2301A load sharing and speed control from Woodward. This control is designed to:

1. control load sharing and speed of generators which are driven by gasoline engines, diesel engines, steam turbines, or gas turbines
2. be used in either isochronous or droop mode
3. act as a forward-acting model
4. drive the actuator to the minimum fuel level if voltage is lost

9900-432 Hardware

The 9900-432 consists of a single printed circuit board inside a sheet-metal housing. The potentiometers of this model are all accessible from the front of this housing. The 9900-432 should be located somewhere with:

• proper ventilation
• space
• protection from elements such as water, high voltage, and excess vibration

This control is not designed to be mounted on the engine itself.

9900-432 2301A Context

This unit is rated for use in an environment with a temperature between -45°C and 85°C. The default speed setting for this model is 2,000-6,000Hz, but this can be changed via a switch to 500-1,500Hz, 1,000-3,000Hz, or 4,000-12,000Hz. In order to have a full 2301A system for a single engine with this part, all of the following are required:

• the 9900-432
• a 90-150VDC or 88-132VAC (50/60Hz) power source
• a speed-sensing device
• a proportional actuator
• current and potential transformers