_hot_: Siemens Fault 0a7991

If a commissioning optimization sequence is run but the operational parameters are not saved directly from the temporary Random Access Memory (RAM) to the non-volatile Read-Only Memory (ROM), the drive defaults back to its setup state following a power cycle.

: If parameter data is not permanently stored from volatile memory (RAM) to non-volatile memory (ROM), the drive reverts to an uncommissioned state after power-cycles. Step-by-Step Fixes for Alarm A07991 1. Complete the Standard Motor Identification Run siemens fault 0a7991