What it means
F07841 means that the signal "infeed operation" was withdrawn while the drive was in operation: the infeed stopped signalling that it is running, and the drive trips with its configured fault response and will not restart until the fault has been acknowledged. Depending on how the drive is configured, the same condition can also be issued as an alarm (A) instead of a fault. The manual adds one configuration note: If this drive is intended to back up the DC link regeneratively, then the fault response must be parameterized for NONE, OFF1 or OFF3. so that the drive can continue to operate even after the infeed fails.
Why it appears
- The interconnection of the binector input (BI) for the signal "infeed operation" (p0864) is either incorrect or missing.
- The enable signals of the infeed were disabled.
- Because of a fault, the infeed withdraws the signal "infeed operation" itself.
What to check
- Check the interconnection of the binector input (p0864) that carries the "infeed operation" signal, and correct it if it is wrong or missing.
- Check the enable signals of the infeed and, if required, enable them.
- If an infeed fault is present, remove that fault and acknowledge it, then acknowledge F07841 itself.
Parameters the manual names
- p0864 — the binector input (BI) that supplies the "infeed operation" signal to the drive; for this code the remedy is to check its interconnection, because an incorrect or missing interconnection here is a documented cause of F07841.
Acknowledging and restarting
Remove the cause first — correct the p0864 interconnection, enable the infeed if its enable signals were withdrawn, or clear the infeed fault behind the withdrawal — and then acknowledge F07841. The drive only starts again once the fault has been acknowledged.
What differs between the drive families
Straight from the manuals' own fields — F07841 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Servo: OFF2 (IASC/DCBRK, NONE, OFF1, OFF3) Vector: OFF2 (IASC/DCBRK, NONE, OFF1, OFF3) Hla: OFF2 (NONE, OFF1, OFF3) | IMMEDIATELY | Infeed faulted (13) | None | SINAMICS S120, S150 List Manual · p. 2869 |
| G130, G150 | OFF2 (IASC/DCBRK, NONE, OFF1, OFF3) | IMMEDIATELY | Infeed faulted (13) | None | SINAMICS G130, G150 List Manual · p. 1601 |
The drives this code lives on
F07841 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 F07841 on a SINAMICS drive mean?
The signal "infeed operation" was withdrawn while the drive was running, so the infeed is no longer signalling operation. The drive trips and the fault must be acknowledged before it will start again.
Which parameter belongs to F07841?
p0864, the binector input (BI) that supplies the "infeed operation" signal. Its interconnection is checked first, because a wrong or missing interconnection is one of the documented causes.
How do I clear and reset F07841?
Check the p0864 interconnection, check the infeed enable signals and enable them if required, and remove and acknowledge any infeed fault. Then acknowledge F07841 itself; the drive restarts only after acknowledgment.
Can the drive keep operating after the infeed fails with F07841?
Only if the fault response is parameterized for NONE, OFF1 or OFF3. The manual requires this when the drive is intended to back up the DC link regeneratively, so it can continue to operate after the infeed fails.
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 F07xxx group · SINAMICS manuals · Siemens manuals