Siemens A7971 fault code meaning
Siemens / A7971
Series: V90
Commutation angle offset determination activated
servo drive
Meaning: Message class: Parameter setting/configuration/commissioning error (18). Automatic determination of the commutation angle offset (encoder adjustment) is activated. Automatic determination will be performed at the next switch-on command. This alarm clears automatically after determination is complete.
Possible causes
Source: SINAMICS V90 PROFINET, SIMOTICS S-1FL6 Operating Instructions P395