Siemens CU240B-2 - Page 395

Corrective maintenance
8.2 Firmware upgrade and downgrade
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
395
6.
At the
end of the transfer, the LED RDY and BF slowly
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.
7.
Switch off the inverter power supply.
8.
Wait until all LEDs on the inverter ar
e dark.
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.
9.
Switch on the inverter power supply again.
10.
If the firmware downgrade was successful, after several
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 case
s 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.
11.
If the memory card did not contain a data backup of the inverter settings, then you must
transfer your s
ettings to the inverter from another data backup.
Backing up data and series commissioning (Page 351)
You have replaced the inverter's firmware by an older version.