What it means
A01931 is the alarm for clock cycle synchronous operation over PROFIBUS (PB) or PROFINET (PN): the speed controller sampling time must be set the same on all drives taking part, and at least one drive object has a different value. The alarm tells you which drive object deviates so the settings can be matched again.
Why it appears
- For clock cycle synchronous operation, the speed controller sampling time of all drives must be set to the same value; at least one drive object is set differently from the others.
What to check
- Read the alarm value in r2124; interpreted as a decimal number, it is the number of the drive object whose speed controller sampling time differs.
- Set the speed controller sampling times to identical values in p0115[1] so that all drives use the same sampling time.
Reading the message value
- The drive stores the alarm value in r2124; interpret it as a decimal number.
- The value is the number of the drive object with the different speed controller sampling time.
Parameters the manual names
- r2124 — alarm value; read it as a decimal number to identify the drive object whose speed controller sampling time is different.
- p0115[1] — sampling time for supplementary functions; for this alarm it is where the speed controller sampling time is set, and it must be given the identical value on all drives.
Acknowledging and restarting
The alarm needs no acknowledgement, and the drive takes no automatic action of its own. It is resolved by setting the speed controller sampling times to identical values in p0115[1].
The same on every family
Every manual that describes A01931 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS G130, G150 List Manual · p. 1492 |
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2716 |
The drives this code lives on
A01931 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A01931 mean in SINAMICS?
It means that for clock cycle synchronous operation the speed controller sampling time of all drives must be the same, and one drive object has a different setting.
How do I fix A01931?
Set the speed controller sampling time in p0115[1] to identical values on all drives. The alarm value in r2124, read as a decimal number, shows which drive object deviates.
Does A01931 have to be acknowledged?
No. The alarm needs no acknowledgement and the drive takes no automatic action; matching the sampling times in p0115[1] resolves the condition.
Which drive object is causing A01931?
The alarm value in r2124, interpreted as a decimal number, is the number of the drive object with the different speed controller sampling time.
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 A01xxx group · SINAMICS manuals · Siemens manuals