What it means
A02000 is the alarm Function generator: Start not possible
. The drive raises it when the function generator is commanded to start although it has already been started, so the new start cannot be executed. The alarm carries no message value, and the drive takes no automatic action in response — it only reports why the start was refused. The alarm remains until its cause is removed and the function generator is restarted. The manuals that describe this code give the same cause and the same remedy for all drive objects, so one description covers every converter family.
Why it appears
- A start of the function generator has been commanded while the function generator has already been started. The manuals name no other cause.
What to check
- Stop the function generator — the manual points to p4800 (Function generator control) for controlling it.
- Restart the function generator again if a start is actually needed.
Parameters the manual names
- p4800 — Function generator control (FG control): the manual references this parameter when resetting A02000; it is where the function generator is stopped and started again.
Acknowledging and restarting
No separate acknowledgment is required. The manual gives the reset as two steps: remove the cause of the alarm, then restart the function generator. In practice this means stopping the running function generator via its control (p4800) and starting it again if required — the alarm then clears.
The same on every family
Every manual that describes A02000 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. 1498 |
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2724 |
The drives this code lives on
A02000 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 A02000 mean?
It means the function generator could not start because it has already been started. A further start command cannot be executed while the function generator is running.
How do I clear alarm A02000?
Stop the function generator and restart it again if necessary. The alarm is reset by removing the cause and restarting the function generator.
Does A02000 need to be acknowledged?
No. The alarm resets once its cause is removed and the function generator is restarted.
Which parameter is used for the function generator?
p4800 — Function generator control. The manual references it when describing the reset of A02000.
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