What it means
The drive raises F34802 when the Voltage Sensing Module (VSM) has a time slice overflow. The G130/G150 and the S120/S150 manuals describe this condition identically, so one description covers all four families. Depending on the drive's configuration, the same condition can also be issued as an alarm or as a message with no reaction.
Why it appears
- The Voltage Sensing Module (VSM) has registered a time slice overflow. Both manual entries name this as the sole cause; they do not differ for any drive object or component.
What to check
- Replace the Voltage Sensing Module (VSM) — this is the only remedy the manuals give for F34802, and no further checks are described.
Acknowledging and restarting
F34802 is acknowledged immediately. Because the manual's only remedy is to exchange the Voltage Sensing Module, replace it first and acknowledge the fault afterwards to clear it.
What differs between the drive families
Straight from the manuals' own fields — F34802 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Infeed: OFF2 (NONE, OFF1) Vector: NONE (OFF1, OFF2, OFF3) | IMMEDIATELY | Hardware/software error (1) | Voltage Sensing Module (VSM) | SINAMICS S120, S150 List Manual · p. 3185 |
| G130, G150 | Vector: NONE (OFF1, OFF2, OFF3) Infeed: OFF2 (NONE, OFF1) | IMMEDIATELY | Hardware/software error (1) | Voltage Sensing Module (VSM) | SINAMICS G130, G150 List Manual · p. 1855 |
The drives this code lives on
F34802 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 fault F34802 mean on a SINAMICS drive?
It reports a time slice overflow on the Voltage Sensing Module (VSM). That is the only cause the manuals give.
How is F34802 cleared?
The manuals give exactly one remedy: replace the Voltage Sensing Module, then acknowledge the fault immediately.
Can F34802 also appear as an alarm instead of a fault?
Yes. Depending on the drive's configuration, the same condition can also be issued as an alarm or as a message with no reaction.
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 F34xxx group · SINAMICS manuals · Siemens manuals