Motor and inverter protection by limiting the voltage (Page 301)
Increasing the drive availability
The kinetic buffering converts the kinetic energy of the load into electrical energy to buffer short-
term power failures.
Kinetic buffering (Vdc min control) (Page 309)
The "Flying restart" function permits the fault-free switching on of the motor while it is still
turning.
Flying restart – switching on while the motor is running (Page 303)
For active automatic restart, after a power failure, the inverter attempts to automatically restart
the motor and to acknowledge any faults that occur.
Energy saving
For standard induction motors, the efficiency optimization reduces the motor losses in the
partial load range.
Efficiency optimization (Page 311)
If necessary, the main contactor control disconnects the inverter from the power system and
so reduces the inverter losses.
Line contactor control (Page 314)
The inverter calculates how much energy controlled inverter operation saves when compared
to mechanical flow control (e.g. throttle).
Calculating the energy saving for fluid flow machines (Page 316)
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Advanced commissioning
6.1 Overview of the inverter functions
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
159
