Parameterizing Regenerative Braking - Siemens Sinamics G120 CU240E Operating Instructions Manual

5.10.1.3

Parameterizing regenerative braking

Regenerative braking helps save energy thanks to feedback
The frequency inverter can feed back up to 100% of its power (for HO base load) into the
line supply. The magnitude of the regenerative energy depends on the motor speed and the
current or voltage limit parameters.
If the energy fed back into the line supply exceeds the rated power of the frequency inverter,
then the frequency inverter shuts down with fault message F0028.
Regenerative feedback for V/f control (P1300 < 20)
The regenerative power can be limited via P0640. If the regenerative power exceeds its limit
value for longer than 5 s, the converter shuts down with fault code F0028.
Note
If regenerative feedback is required at the rated frequency, set the parameter for the
maximum frequency (P1082) greater than P0310 (rated motor frequency).
Frequency inverter
Operating Instructions, 08.10. 2008, t.b.d.
Functions
5.10 Technological functions
133