Program features 87
The internal brake choppers in the drive (in frames R0…R3) start conducting when
the DC link voltage reaches approximately 1.15 × U
DCmax
. 100% maximum pulse
width is reached at approximately 1.2 × U
DCmax
. (U
DCmax
is the DC voltage
corresponding to the maximum of the AC supply voltage range.) For information on
external brake choppers, refer to their documentation.
Note: Overvoltage control needs to be disabled for the chopper to operate.
Parameters
Parameters: 01.11 DC voltage, 30.30 Overvoltage control, group 43 Brake chopper.
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