Alarm codeA7971
Angular commutation offset determination activated as automatic encoder adjustment is being performed at next power-on. The manual's first action is: “The alarm automatically disappears after determination.”
- Model
- Siemens SINAMICS V90, SIMOTICS S-1FL6
- Display shows
- Angular commutation offset determination activated (A7971)
- Type
- Alarm code
- Source
- Manual p. 311
What A7971 means
Angular commutation offset determination activated p. 311
Common causes
- The automatic determination of the angular commutation offset (encoder adjustment) is activated. p. 311
- The automatic determination is carried out at the next power-on command. p. 311
What to do
- The alarm automatically disappears after determination. p. 311
Before you service the product, read the safety instructions in the manual p. 2.
If A7971 is still not resolved
- Contact service / dealer for assistance p. 2 “Qualified Personnel The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions.”
- Contact service / dealer for assistance p. 13 “NOTICE Property damage due to loose power connections Insufficient tightening torques or vibration can result in loose power connections. This can result in damage due to fire, device defects or malfunctions.”
This page summarises what the manufacturer’s manual says about A7971; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.