Siemens SINAMICS G120D Operating Instructions Manual page 277

6. At the end of the transfer, the LED RDY and BF slowly flash red (0.5 Hz).
Note
Power supply failure during the transfer
The inverter firmware will be incomplete if the power supply fails during the transfer.
• Start again with Step 1 of these instructions.
7. Switch off the 24 V supply or remove the connector for the 24 V supply from the Control
Unit.
8. Wait until the LEDs on the Control Unit have gone out.
Decide whether to remove the memory card from the inverter:
– You leave the memory card in place:
– Remove the memory card: The inverter keeps its settings.
9. Mount the Control Unit on the Power Module.
Converter with control units CU240D-2
Operating Instructions, 07/2016, FW V4.7 SP6, A5E34262100B AD
⇒ If the memory card does not contain any data backup for the inverter settings, the
inverter writes its settings to the memory card in step 10.
⇒ If the memory card already includes a data backup, the inverter imports the settings
from the memory card in step 10.
Corrective maintenance
8.2 Firmware upgrade and downgrade
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