BF Explanation
No fieldbus connection is available
RDY When LED RDY flashes simultaneously:
Incorrect memory card
Firmware update failed
Firmware update is active
Communication via Modbus or USS:
If the fieldbus monitoring is deactivated with p2040 = 0, the BF-LED remains dark, independent
of the communication state.
Warnings, faults and system messages
9.2 Operating states indicated on LEDs
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB 745