Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 42)

42 Rockwell Automation Publication 750-RM002B-EN-P - September 2013
Chapter 1 Drive Configuration
With bus regulation disabled, the bus voltage can exceed the operating limit and
the drive faults to protect itself from excess voltage.
With bus regulation enabled, the drive can respond to the increasing voltage by
advancing the output frequency until the regeneration is counteracted. This
keeps the bus voltage at a regulated level below the trip point.
The bus voltage regulator takes precedence over acceleration/deceleration.
Select bus voltage regulation in the Bus Reg mode parameter.
Drive Output Shut Off
0V Fault @ V
bus
Max
DB Bus
Motor Speed
Output Frequency