What it means
F30061 (Bridging contactor monitoring) is raised when a feedback signal for the bypass (bridging) contactor is interconnected and its monitoring is activated, but after the contactor is switched in or switched out no correct feedback signal arrives within the monitoring time set in p0255[1, 3]. Which of the monitored conditions actually tripped the protection can be read from the fault value in r0949, interpreted as a binary number. By default the drive reacts with OFF2, i.e. it switches off and coasts down and must be acknowledged before it can be restarted; OFF1 or no reaction can be configured instead. The same monitoring condition can also be issued as an alarm — as an alarm it triggers no automatic reaction and requires no acknowledgement.
Why it appears
- A feedback signal for the bypass contactor is interconnected and the monitoring of this signal is activated.
- After the contactor was switched in or switched out, a correct feedback signal was not received within the monitoring time set in p0255[1, 3].
What to check
- Check the monitoring time setting in p0255[1, 3].
- Check the contactor wiring and its activation.
- Replace the contactor.
Reading the message value
- Bit 0: the time set in p0255[1, 3] was exceeded when switching in or switching out the contactor.
- Bit 1: the bypass contactor was opened in operation.
- Bit 2: the bypass contactor was switched in in the OFF state or during precharging.
Parameters the manual names
- p0255 (Power unit contactor monitoring time): the time within which the bypass contactor feedback signal must arrive after switch-in or switch-out — check this setting first when F30061 occurs.
- r0949 (fault value): read the fault cause for F30061 here and interpret it as a binary value; bit 0, 1 or 2 shows which contactor condition the monitoring detected.
Acknowledging and restarting
Once the cause has been remedied, this fault can be acknowledged immediately; switching the supply off and on again (POWER ON) also clears it. After acknowledgement the drive can be restarted. If the monitoring is configured to appear only as an alarm, no acknowledgement is required.
The same on every family
Every manual that describes F30061 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | OFF2 (NONE, OFF1) | IMMEDIATELY (POWER ON) | Infeed faulted (13) | Power Module | SINAMICS G130, G150 List Manual · p. 1669 |
| S120, S150 | OFF2 (NONE, OFF1) | IMMEDIATELY (POWER ON) | Infeed faulted (13) | Power Module | SINAMICS S120, S150 List Manual · p. 2961 |
The drives this code lives on
F30061 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 F30061 mean on a SINAMICS G130, G150, S120 or S150?
The drive monitors the feedback signal of the bypass (bridging) contactor, and after the contactor was switched in or out no correct feedback signal was received within the monitoring time set in p0255[1, 3].
How do I fix fault F30061?
Check the monitoring time setting in p0255[1, 3], then check the contactor wiring and its activation. If both are correct, replace the contactor.
How is F30061 acknowledged and cleared?
After the cause has been remedied the fault can be acknowledged immediately, and a POWER ON also clears it. If the same monitoring appears as an alarm instead of a fault, no acknowledgement is needed.
What does bit 1 of the F30061 fault value in r0949 tell me?
That the bypass contactor was opened while the drive was in operation.
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