Siemens Sinamics G120P Operating Instructions Manual page 381

The DC-braking function is possible only for induction motors.
DC braking when falling below a start speed
DC braking initiated using a control command
Precondition: p1231 = 4 and p1230 = control
command, e.g. p1230 = 722.3 (control command
DC braking when falling below a starting speed
1. The motor speed has exceeded the starting speed.
2. The inverter activates the DC braking as soon as the motor speed falls below the starting
speed.
DC braking when a fault occurs
1. A fault occurs, which initiates DC braking (DCBRK) as response.
2. The motor brakes along the down ramp to the speed for the start of DC braking.
3. DC braking starts.
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
Precondition: p1230 = 1 and p1231 = 14
via DI 3)
7.7 Application-specific functions
DC braking when a fault occurs
Precondition: Fault number and fault response
are assigned using p2100 and p2101
DC braking when switching off the motor
Precondition: p1231 = 5 or p1230 = 1 and p1231
= 14
Functions
381