What it means
A01930 is an alarm for clock cycle synchronous operation over PROFIBUS (PB) or PROFINET (PN): the current controller sampling time is not set to the same value on all drives. Clock cycle synchronous operation requires that every drive uses the same current controller sampling time, and with this alarm at least one drive object deviates from the others. The alarm does not trip the drive, but the sampling times must be equalized for the clock cycle synchronous operation.
Why it appears
- The drives do not all use the same current controller sampling time, which clock cycle synchronous operation requires of every drive.
What to check
- Read the alarm value in r2124 and interpret it as a decimal number: it contains the number of the drive object whose current controller sampling time differs from the others.
- Set the current controller sampling time to identical values in p0115[0] so that all drives carry the same setting.
Reading the message value
- The drive writes the number of the drive object with a different current controller sampling time into r2124 as the alarm value; the manual specifies that this value is interpreted as a decimal number.
Parameters the manual names
- p0115[0] — the parameter named in the remedy: enter the same value here on every drive so that the current controller sampling times match (the parameter chapter lists p0115 as the sampling time for supplementary functions).
- r2124 — the alarm value: for this alarm it holds the number of the drive object with the differing current controller sampling time, read as a decimal number.
Acknowledging and restarting
No acknowledgment is necessary for this alarm. Once the current controller sampling time in p0115[0] has been set to the same value on all drives, the cause is removed and no further acknowledgment or restart action is needed.
The same on every family
Every manual that describes A01930 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
A01930 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 A01930 mean on a SINAMICS drive?
It is raised for clock cycle synchronous operation over PROFIBUS (PB) or PROFINET (PN) when the current controller sampling times of the drives are not identical. The alarm value tells you which drive object deviates.
How do I fix A01930?
Set the current controller sampling time to identical values in p0115[0] on all drives. No acknowledgment is required once the sampling times match.
Which drive object is causing A01930?
Read r2124 and interpret the value as a decimal number — it contains the number of the drive object whose current controller sampling time is different.
Does A01930 stop the drive?
No, the drive is not tripped by this alarm. The sampling time still has to be equalized, because clock cycle synchronous operation requires the same value on all drives.
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