Siemens Sinamics CU240D-2 DP Operating Instructions Manual page 306

Corrective maintenance
9.3 Firmware upgrade and downgrade
Procedure
1. Remove the connector for the 24 V power supply of the
2. Remove the Control Unit from the Power Module.
3. All Control Unit LEDs are dark.
4. Insert the card with the matching firmware into the slot on
5. Insert the connectors for the Control Unit 24 V power sup-
6. Switch on the 24 V power supply.
7. The Control Unit transfers the firmware from the
8. At the end of the transfer, the LED RDY and BF slowly
304
Control Unit.
the rear side of the Control Unit until you can feel it lock in
place.
ply.
memory card into its memory.
The transfer takes between 5 and 10 minutes.
During the transfer, the BF LED will flash orange
at a variable frequency.
Because the Control Unit is separated from the
Power Module, the RDY LED will additionally
shine red.
flash red (0.5 Hz).
Power supply failure during the transfer
The inverter firmware will be incomplete if the power sup-
ply fails during the transfer.
• Start again with Step 1 of these instructions.
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF