What it means
A30853 is an alarm that the power unit raises when the cyclic setpoint telegrams of the Control Unit (CU) are no longer updated on time. The condition behind it is that at least two sign-of-life errors have occurred within the monitoring window set in p7788. The list manuals for the G130, G150, S120 and S150 describe this code, and their entries give the same cause and the same remedy, so one description covers all of these families.
Why it appears
- The power unit has detected that the Control Unit's cyclic setpoint telegrams have not been updated on time.
- At least two sign-of-life errors have occurred within the monitoring window set in p7788.
What to check
- Reduce the size of the monitoring window in p7788.
- Check the Motor Module, and replace it if the check requires it.
Parameters the manual names
- p7788 — power unit sign-of-life monitoring tolerance window (PU SoL mon tol): for this alarm, the remedy is to reduce the size of this window so the monitoring is tightened.
Acknowledging and restarting
The manuals specify no acknowledgement step for this alarm. Their remedy is limited to the two measures above; no separate reset procedure is printed for this code.
What differs between the drive families
Straight from the manuals' own fields — A30853 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | General drive fault (19) | Control Unit (CU) | SINAMICS S120, S150 List Manual · p. 3018 |
| G130, G150 | NONE | NONE | General drive fault (19) | Control Unit (CU) | SINAMICS G130, G150 List Manual · p. 1710 |
The drives this code lives on
A30853 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 A30853 mean on a SINAMICS drive?
The power unit has detected that the Control Unit's cyclic setpoint telegrams were not updated on time. The alarm is issued once at least two sign-of-life errors have occurred within the window set in p7788.
Which parameter belongs to A30853?
p7788, the power unit sign-of-life monitoring tolerance window. The manual's remedy for this alarm is to reduce the size of this window.
How do I fix A30853?
Reduce the monitoring window in p7788, then check the Motor Module and replace it if required. No further measures are printed for this code.
Does A30853 have to be acknowledged?
The manuals describing this code print no acknowledgement step for it. The remedy they give is limited to the p7788 window and the Motor Module check.
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 A30xxx group · SINAMICS manuals · Siemens manuals