What it means
A07961 announces that the automatic friction characteristic record is activated: the drive records the friction characteristic at the next switch-on command. The alarm carries no message value and needs no acknowledgement — the drive withdraws it by itself, either once the recording has been completed successfully or as soon as the record is deactivated with p3845 = 0. The manuals for SINAMICS G120, G130, G150, S120 and S150 describe this alarm with the same wording and the same handling.
Why it appears
- The automatic friction characteristic record is activated; the friction characteristic is recorded at the next switch-on command.
- While the friction characteristic is being plotted, it is not possible to save the parameters (p0971, p0977).
What to check
- No measures are necessary. The alarm is automatically withdrawn after the friction characteristic recording has been successfully completed.
- If the recording is not wanted, deactivate it by setting p3845 = 0 — the alarm then disappears automatically as well.
- Keep in mind that saving with p0971 or p0977 is not possible while the friction characteristic is being plotted, so wait until the recording has finished.
Parameters the manual names
- p3845 — Record friction characteristic activation: set it to 0 to deactivate the record; the alarm then disappears automatically.
- p0971 — Save drive object parameters: a save is not possible while the friction characteristic is being plotted, so wait until the recording has finished before saving.
- p0977 — Save all parameters: subject to the same restriction as p0971 during the friction characteristic record.
Acknowledging and restarting
A07961 does not have to be acknowledged. The drive withdraws the alarm automatically — after the friction characteristic recording has been successfully completed, or when the record is deactivated by setting p3845 to 0. No further action is required.
What differs between the drive families
Straight from the manuals' own fields — A07961 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2892 |
| G130, G150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS G130, G150 List Manual · p. 1619 |
| G120 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | — | SINAMICS G120 · p. 890 |
The drives this code lives on
A07961 is described for G120, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A07961 mean on a SINAMICS drive?
It reports that the automatic friction characteristic record is activated; the drive records the friction characteristic at the next switch-on command. The G120, G130, G150, S120 and S150 manuals describe it identically.
How do I clear or reset A07961?
No acknowledgement is needed. The alarm withdraws itself once the friction characteristic recording has been successfully completed, or as soon as you deactivate the record by setting p3845 = 0.
Why can I not save parameters with p0971 or p0977?
While the friction characteristic is being plotted, saving with p0971 and p0977 is not possible. Wait until the recording has finished and the alarm has withdrawn itself, then save.
Do I have to do anything about alarm A07961?
No. The manuals state that no remedy is necessary; the alarm disappears by itself after the recording has completed successfully or has been deactivated with p3845 = 0.
Codes next to this one
Source
Written from Siemens' own List Manuals and operating instructions; every number, designation and parameter on this page is checked against them before publication.
All SINAMICS codes: fault and alarm codes · the A07xxx group · SINAMICS manuals · Siemens manuals