What it means
A02047 is an alarm from the function generator: the time slice clock cycle selected for it does not match any of the time slices that exist in the drive. The selected clock cycle is held in p4830, so the alarm points to a function generator time slice entry the drive does not provide, not to a hardware condition.
Why it appears
- The time slice clock cycle selected for the function generator does not match any of the existing time slices — the value entered in p4830 (Function generator time slice cycle) is not one of the time slices the drive actually has.
What to check
- Read out the time slices that exist in the drive via p7901.
- Enter one of these existing time slice clock cycles in p4830 (Function generator time slice cycle).
Parameters the manual names
- p4830 (Function generator time slice cycle / FG time slice): the parameter in which the invalid time slice clock cycle was selected — set it to a time slice that exists in the drive.
- r7901 (Sampling times / t_sample): read out here to see which time slices the drive actually provides, so a valid value can be chosen for p4830.
Acknowledging and restarting
The alarm is reset by removing its cause and then restarting the function generator. No separate message acknowledgement is needed: once p4830 holds an existing time slice clock cycle, restarting the function generator clears the alarm. The valid time slices can be re-checked at any time in r7901 (Sampling times).
The same on every family
Every manual that describes A02047 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. 1504 |
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2729 |
The drives this code lives on
A02047 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 A02047 mean on a SINAMICS drive?
The time slice clock cycle selected for the function generator does not match any of the time slices that exist in the drive. The invalid selection sits in p4830.
How do I fix alarm A02047?
Read out the existing time slices via p7901 and enter one of them in p4830 (Function generator time slice cycle). Then restart the function generator.
How is A02047 reset?
Remove the cause and restart the function generator; no separate message acknowledgement is required.
Where can I see which time slice clock cycles are valid?
In r7901 (Sampling times), which shows the time slices the drive actually provides.
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 A02xxx group · SINAMICS manuals · Siemens manuals