What it means
A02026 tells you that the pulse width configured for the function generator is too high. In the function generator the pulse width must always be smaller than the period duration, and the current setting violates this. The width is held in p4822, the period in p4821. The drive classifies the alarm as an error in the parameterization / configuration / commissioning procedure, and the G130/G150 and S120/S150 manuals describe it in the same words.
Why it appears
- The pulse width selected for the function generator is set too high — the pulse width must be less than the period duration.
What to check
- Reduce the pulse width in p4822.
- Make sure the value in p4822 is now smaller than the period duration in p4821.
- Restart the function generator.
Parameters the manual names
- p4822 (FG pulse width) — the value you reduce so that it stays below the period duration.
- p4821 (FG period duration) — the period that the pulse width in p4822 must remain smaller than.
Acknowledging and restarting
The manual's reset is: remove the cause of this alarm and then restart the function generator. Once this is done the alarm is gone; no further action is described.
The same on every family
Every manual that describes A02026 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. 1502 |
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2728 |
The drives this code lives on
A02026 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 A02026 mean on a SINAMICS drive?
It means the function generator's pulse width is set too high: the pulse width must be less than the period duration.
How do I clear alarm A02026?
Reduce the pulse width in p4822 so that it is smaller than the period duration in p4821, then restart the function generator.
Which parameters are linked to A02026?
p4822 (FG pulse width) and p4821 (FG period duration).
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