Siemens SINAMICS G110D Operating Instructions Manual page 122

Functions
6.9 Technological functions
Automatic restart mode (P1210=6)
If parameter P1210 is set to 6, then the Inverter will react to an ON command after a power
failure by clearing all faults and alarms then running the motor. If the Inverter has been
powered-down normally and P1210=6, then when the Inverter is powered-up, it will clear all
faults and alarms, then start running the motor automatically.
Since the function is not restricted to line supply faults, it can also be used to automatically
acknowledge faults and restart the motor after any tripping. To allow the drive to be switched
to a motor shaft that is still rotating, the "flying restart" function must be activated via P1200.
When the "automatic restart" function is active (P1210 > 1), a motor can restart
automatically once the power has been restored. This is particularly critical if it is incorrectly
assumed that the motors have been shut down after a long power failure.
For this reason, death, serious injury, or considerable material damage can occur if
personnel enters the working area of motors in this condition.
Commissioning the automatic restart
1. Parameterizing the automatic restart using P1210
2. Set the number of start attempts via P1211.
3. If, for an automatic restart, the inverter is to be connected to an already rotating motor,
4. Make sure that this functions properly.
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WARNING
WARNING
then the 'flying restart' function should also be activated using P1200.
Operating Instructions, 2009-05-15, A5E02385577A AB
SINAMICS G110D