Cat® Digital Voltage Regulator Caterpillar

• Generator rated voltage

• Knee frequency

• Under frequency point

Note: The user can configure the under frequency set point.

The digital voltage regulator will begin to build voltage following the "Soft Start" settings before the under frequency point has been reached. After the under frequency point has been reached, the digital voltage regulator will begin to build voltage following a volts per hertz profile. When the speed reaches the knee frequency point, the loading/stopping profile takes effect. The startup profile function will not be initiated again unless the frequency drops below the under frequency point. The under frequency point is defaulted to 25 Hz, with a range of 20 to 40 Hz. The under frequency set point is the same under frequency set point that is used by the loading and stopping set point. The knee frequency point is the point at which the digital voltage regulator will regulate to the voltage specified by the generator output voltage parameter.