SWITCH ASSEM. (oil pressure) 0067750 - Caterpillar

Cat Digital Voltage Regulator (Cat DVR)
The Cat Digital Voltage Regulator presents an electrical shock/electrocution hazard. This hazard will cause serious injury or death.Service by trained personnel only.The terminals and heat sinks are live at hazardous voltages when power is applied and for up to 8 minutes after power is removed.
Illustration 1 g03844029The Cat DVR is a microprocessor-based voltage regulator. Control power for the Cat DVR is supplied from an external source of 24 VDC. The power stage of the Cat DVR is supplied from a multiple pole high frequency permanent magnet generator. The multiple pole high frequency permanent magnet generator is mounted on the end of the generator shaft. Connections to the Cat DVR are made through three connectors. The communication between the Cat DVR and the service tool is accomplished by using a CANBUS protocol.The Cat DVR has the following features:
Three control modes:
Automatic voltage regulation (AVR)
Power factor (PF) regulation
Reactive power (VAR) regulation
Programmable stability settings
Soft start control with an adjustable time setting in AVR mode
Dual slope voltage versus frequency (V/Hz) characteristic
Three-phase or single-phase voltage sensing
Single-phase current sensing
Field current sensing and field voltage sensing
Ten protection functionsAdjusting the Cat DVR
To view and configure the parameters of the Cat DVR, a PC with the Cat DVR software is required.Refer to Specifications, Systems Operation, Testing and Adjusting, RENR7941, "Cat Digital Voltage Regulator" for complete information.