Siemens sinamics G120 Operating Instructions Manual page 397

6. At the end of the transfer, the LED RDY and BF slowly
7. Switch off the inverter power supply.
8. Wait until all LEDs on the inverter are dark.
9. Switch on the inverter power supply again.
10. If the firmware downgrade was successful, after several
11. If the memory card did not contain a data backup of the inverter settings, then you must
You have replaced the inverter's firmware by an older version.
Memory cards with license
If the memory card includes a license, e.g. for the basic positioner, then the memory card
must remain inserted after the firmware has been updated.
Converter with CU250S-2 Control Unit
Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE
flash red (0.5 Hz).
Power supply failure during transfer
The inverter firmware will be incomplete if the power
supply fails during the transfer.
• Start again with Step 1 of these instructions.
Decide whether you want to withdraw the memory card
from the inverter:
• The memory card contains a data backup: ⇒ The
inverter has taken the settings from the memory
card.
• There was no data backup on the memory card: ⇒
The inverter has the factory settings.
seconds the inverter LED RDY turns green.
If the memory card is still inserted, depending on the
previous content of the memory card, one of the two
following cases has occurred:
• The memory card contains a data backup: ⇒ The
inverter has taken the settings from the memory
card.
• There was no data backup on the memory card: ⇒
The inverter has the factory settings.
transfer your settings to the inverter from another data backup.
Backing up data and series commissioning (Page 349)
Corrective maintenance
8.3 Firmware upgrade and downgrade
397