Siemens SINAMICS G220 - Page 726

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Figure14-262 Switching over via the speed (p1267.1=1)
Switchover phase from converter operation to mains operation:
1. The converter waits for the time p1264 to expire.
2. The converter switches the motor o󹪜 and opens the K1 converter contactor.
3. The feedback signal indicating that the K1 converter contactor is open must arrive within the
time p1274[0].
4. The converter waits for the de-excitation time of the motor.
5. The converter closes the line contactor K2.
6. The motor accelerates on the line supply.
The motor accelerates to its rated speed if it is operating with its rated voltage and frequency.
Switchover phase from mains operation to converter operation:
1. The converter waits for the time p1263 to expire.
2. The converter opens the line contactor K2.
3. The feedback signal indicating that the K2 line contactor is open must arrive within the time
p1274[1].
4. If voltage measurement is selected with p0247.5 = 1, the converter waits for the time
p1274[1].
If voltage measurement is deselected with p0247.5 = 0, the converter waits for the time
p1274[1] + the motor de-excitation time p1262.
Functions
14.13Technology functions
SINAMICS G220 converter
724 Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB