Lenze i550

14 Addional funcons
14.1 Brake energy management
When braking electrical motors, the kinec energy of the drive train is fed back regeneravely
to the DC bus. This energy causes a DC-bus voltage boost. If the energy fed back is too high,
the inverter reports an error.
Several dierent strategies can serve to avoid DC-bus overvoltage:
•
Use of a brake resistor
•
Stopping the deceleraon ramp funcon generator when the acve voltage threshold for
the brake operaon is exceeded
•
Use of the "Inverter motor brake" funcon
•
Combinaon of the above named opons
•
DC-bus connecon
Addional funcons
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