Siemens SINAMICS G120C Operating Instructions Manual page 330
Low voltage converters
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- Operating instructions manual (470 pages) ,
- Compact operating instructions (92 pages) ,
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Advanced commissioning
8.21 Electrically braking the motor
DC braking when falling below a starting speed
Figure 8-62
Set p1231 = 14 and p1230 = control command.
With an active DC braking command (p1230 = 1 signal), the following occurs:
1. If motor speed < starting speed p1234:
The converter de-energizes the motor for the motor de-excitation time p0347 in order to
demagnetize the motor.
2. The converter activates the DC braking.
3. The drive switches back to normal operation if at least one of the following conditions has
been fulfilled:
– "DC braking duration" p1233 has expired.
– The DC braking command is inactive (p1230 = 0 signal).
DC braking when the motor is switched off
Figure 8-63
Set p1231 = 5.
328
DC braking when falling below a starting speed
DC braking when the motor is switched off
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
SINAMICS G120C Converters
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