Siemens SINAMICS G120 Operating Instructions Manual page 207

Principle of operation
With DC braking, the inverter outputs an internal OFF2 command for the time that it takes to
demagnetize the motor - and then impresses the braking current for the duration of the DC
braking.
The following operating modes are available for DC braking.
SINAMICS G120C Inverter
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
8.9 Application-specific functions
Functions
205