What it means
A01321 is raised when p0978, the drive's list of drive objects, contains a drive object number that does not exist in the configuration. The topology configuration therefore references a drive object that is not there. The manuals for G130/G150 and for S120/S150 describe this alarm identically. It is a parameterization/configuration error: the drive takes no automatic action, and the alarm value tells you the position in p0978 where the invalid number stands.
Why it appears
- p0978 contains a drive object number that does not exist.
What to check
- Read the alarm value in r2124 and interpret it as a decimal number: it is the index of p0978 under which the non-existent drive object number can be determined.
- Set p0009 to 1.
- Change p0978 so that:
- the list includes all of the drive object numbers (p0101),
- no drive object number is entered twice,
- a 0 separates the drive objects with PZD from those without PZD,
- only 2 partial lists are permitted — after the second 0, all values must be 0,
- dummy drive object numbers (255) are only permitted in the first partial list.
Reading the message value
- The alarm value is stored in r2124 and is to be interpreted as a decimal number. It gives the index of p0978 under which the non-existent drive object number can be determined — the position in the list where the invalid entry stands.
Parameters the manual names
- p0978 — the list of drive objects; this is the list you must correct so that it no longer names a drive object number that does not exist.
- p0009 — the device commissioning parameter filter; set it to 1 so that p0978 can be changed.
- p0101 — the drive object numbers; every number listed here must be included in p0978.
- r2124 — the alarm value; read it as a decimal number to find the index of p0978 at which the invalid number stands.
Acknowledging and restarting
No acknowledgement is required for this alarm. The fix lies entirely in the configuration: once p0978 has been corrected to the rules above and again contains only drive object numbers that exist, the alarm condition is resolved. No fault reset at the operator panel is part of this procedure.
The same on every family
Every manual that describes A01321 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. 1401 |
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2590 |
The drives this code lives on
A01321 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 A01321 mean on a SINAMICS drive?
p0978, the drive's list of drive objects, contains a drive object number that does not exist. It is a parameterization/configuration error, described identically for G130/G150 and S120/S150.
How do I fix alarm A01321?
Set p0009 to 1 and correct p0978: it must include all drive object numbers from p0101, without duplicates, with a 0 separating the drive objects with PZD from those without, at most 2 partial lists, and the dummy number 255 only in the first partial list.
How do I find which p0978 entry is wrong for A01321?
Read r2124 and interpret it as a decimal number. It is the index of p0978 under which the non-existent drive object number can be determined.
Does A01321 have to be acknowledged?
No. No acknowledgement is required; the alarm is resolved by correcting p0978 in the configuration.
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