What it means
Alarm A02041 means that the bandwidth of the function generator has been set to a value that does not fit its time slice clock cycle: the bandwidth in p4823 lies either too low or too high relative to the range that p4830 permits. The alarm therefore points at the function generator parameter settings themselves, not at a measured quantity.
Why it appears
- The bandwidth referred to the time slice clock cycle of the function generator has been set either too low or too high.
- The permissible bandwidth follows directly from the time slice clock cycle: Bandwidth_max = 1 / (2 x time slice clock cycle), and Bandwidth_min = Bandwidth_max / 100000.
- Example given in the manual: with p4830 = 125 µs, Bandwidth_max = 1 / (2 x 125 µs) = 4000 Hz and Bandwidth_min = 4000 Hz / 100000 = 0.04 Hz.
What to check
- Check the bandwidth value set in p4823 against the range permitted by the time slice clock cycle in p4830 (Bandwidth_max = 1 / (2 x time slice clock cycle), Bandwidth_min = Bandwidth_max / 100000).
- Adapt the bandwidth value accordingly so that it lies within this range.
Parameters the manual names
- p4823 — Function generator bandwidth: the value you check and correct when A02041 is raised.
- p4830 — Function generator time slice clock cycle: sets the clock cycle from which the permissible bandwidth range is calculated.
Acknowledging and restarting
The alarm is reset in two steps: remove the cause of the alarm, then restart the function generator. No separate acknowledgement of the alarm is needed.
The same on every family
Every manual that describes A02041 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. 1503 |
| 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
A02041 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 SINAMICS alarm A02041 mean?
The bandwidth of the function generator has been set too low or too high for the time slice clock cycle that applies to it. The relevant parameters are p4823 (bandwidth) and p4830 (time slice clock cycle).
How do I clear alarm A02041?
Correct the bandwidth value so that it lies within the permitted range, then restart the function generator. No acknowledgement of the alarm is required.
Which bandwidth values are valid for the function generator?
Bandwidth_max = 1 / (2 x time slice clock cycle) and Bandwidth_min = Bandwidth_max / 100000. For example, with p4830 = 125 µs the valid range is 0.04 Hz to 4000 Hz.
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