Woodward V90RD-3020-FBR 9907-1917 ACTUATOR w/REMOTE SERVO

The active voltage regulation concept intends to substitute a traditional

voltage regulation configuration by simplifying the overall topology. The

easYgen internal controller regulates generator output voltage by sending a

pulse width modulation (PWM) signal to the excitation module. The excitation

module controls generator excitation and therefore generator output voltage.

This topology eliminates the redundant voltage and current sensing from a

traditional voltage regulator and also makes a feedforward control architecture

at AVR level simplifying the cascaded PID control topology. For power input,

EX-10 interfaces with any of the following excitation systems: Self/Shunt

Excitation, Auxiliary winding/AREP Excitation and Permanent Magnet (PMG)

Excitation systems to make it a standard yet versatile solution.

If this LED is turned on, verify that the fans in the power supply chassis are turning and free of dust and

other obstructions, and that the temperature around the power supply is less than 55 °C. If the power

supply is cooled down without delay, it can recover from this situation without shutting down. This LED

will turn off once the internal power supply heat sink temperature falls below approximately 90 °C.

POWER SUPPLY FAULT LED—This red LED turns on when one of the supply’s three power converters

has shut down or one or more of the supply levels is below internally specified levels. If this LED is on,

check for a short circuit on external devices connected to the control’s power supply.