What it means
F30059 reports that the internal fan of the power unit has failed and is possibly defective. The manuals for G120, G120C, G120XA, G130, G150, S120 and S150 all describe this code with the same cause and the same remedy, so the page applies equally to every one of these converter families. The converter monitors the fan fitted inside the power unit; when the fan fails, the drive trips and raises this fault.
Why it appears
- The internal fan of the power unit has failed and is possibly defective.
What to check
- Check the internal fan of the power unit.
- Replace the fan if the check shows it is defective.
Acknowledging and restarting
The drive coasts down when this fault is raised and must be acknowledged immediately before it will restart. The manual adds a caution for this code: If the fault can be acknowledged, this does not necessarily mean that the cause of the fault has been resolved. It is also possible that the software switched off the fan, and therefore can no longer evaluate the feedback signal.
A fault that clears on acknowledgment therefore does not prove the fan is healthy — check and, if necessary, replace the fan even when the message can be cleared.
What differs between the drive families
Straight from the manuals' own fields — F30059 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | Power Module | SINAMICS S120, S150 List Manual · p. 2961 |
| G120XA | OFF2 NONE | IMMEDIATELY NONE | — | — | SINAMICS G120XA PN converter · p. 1162 |
| G130, G150 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | Power Module | SINAMICS G130, G150 List Manual · p. 1669 |
| G120 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | — | SINAMICS G120 · p. 916 |
| G120C | — | — | — | — | SINAMICS G120C Converters · p. 387 |
The drives this code lives on
F30059 is described for G120, G120C, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F30059 mean on a SINAMICS drive?
It reports that the internal fan of the power unit has failed and is possibly defective. The drive coasts down and the fault must be acknowledged before the drive restarts.
How do I fix fault F30059?
Check the internal fan of the power unit and replace it if necessary, then acknowledge the fault. No other remedy is described for this code.
Can F30059 be acknowledged even though the fan is still faulty?
Yes. The manual warns that if the fault can be acknowledged, the cause is not necessarily resolved — the software may have switched the fan off and can then no longer evaluate the feedback signal.
Is F30059 the same on G120, G120XA and S120?
Yes. The manuals for G120, G120C, G120XA, G130, G150, S120 and S150 all state the same cause and the same remedy: check the internal fan and replace it if necessary.
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 F30xxx group · SINAMICS manuals · Siemens manuals