What it means
F07860 reports that the condition for “External fault 1” is satisfied. The drive does not detect anything itself: the message is initiated by a 1/0 edge — the signal dropping from 1 to 0 — at binector input p2106, so the origin lies in whatever external signal is interconnected there. The drive reacts with OFF2, i.e. it coasts down, and the message must be acknowledged before it will start again. Depending on the drive's configuration, the same condition can also be issued as an alarm (A). External fault 2 (F07861) and External fault 3 (F07862) are separate neighbouring messages covered on their own pages.
Why it appears
- The condition for “External fault 1” is satisfied: the drive received a 1/0 edge (a change from 1 to 0) via binector input p2106.
What to check
- Look at binector input p2106 (BI: External fault 1) and identify which external signal is interconnected there.
- Determine why that signal dropped from 1 to 0 and eliminate the causes of this fault.
- Acknowledge the fault.
Parameters the manual names
- p2106 — BI: External fault 1: the binector input whose 1/0 edge raises this fault; its interconnection shows you which external signal source tripped the drive.
Acknowledging and restarting
The order of the remedy matters: eliminate the causes of the fault first, then acknowledge it. The manuals specify immediate acknowledgement, and a POWER ON also removes the message. Where the drive issues the condition as an alarm (A) instead, it carries no reaction and requires no acknowledgement.
What differs between the drive families
Straight from the manuals' own fields — F07860 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Infeed: OFF2 (NONE, OFF1) Servo: OFF2 (IASC/DCBRK, NONE, OFF1, OFF3, STOP2) Vector: OFF2 (IASC/DCBRK, NONE, OFF1, OFF3, STOP2) Hla: OFF2 (NONE, OFF1, OFF3, STOP2) | IMMEDIATELY (POWER ON) | External measured value / signal state outside the permissible range (16) | None | SINAMICS S120, S150 List Manual · p. 2871 |
| G130, G150 | Vector: OFF2 (IASC/DCBRK, NONE, OFF1, OFF3, STOP2) Infeed: OFF2 (NONE, OFF1) | IMMEDIATELY (POWER ON) | External measured value / signal state outside the permissible range (16) | None | SINAMICS G130, G150 List Manual · p. 1602 |
| G120 | OFF2 (IASC/DCBRK, NONE, OFF1, OFF3, STOP2) | IMMEDIATELY (POWER ON) | External measured value / signal state outside the permissible range (16) | — | SINAMICS G120 · p. 883 |
| G120XA | OFF2 (IASC/DCBRK, NONE, OFF1, OFF3, STOP2) | IMMEDIATELY (POWER ON) | — | — | SINAMICS G120XA PN converter · p. 1135 |
| G115D | — | — | — | — | SINAMICS G115D distributed drive · p. 394 |
| G120C | — | — | — | — | SINAMICS G120C Converters · p. 385 |
The drives this code lives on
F07860 is described for G115D, 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 F07860 mean on a SINAMICS drive?
It means the condition for “External fault 1” is satisfied: the signal at binector input p2106 changed from 1 to 0, and the drive raised the fault on that edge.
How do I clear fault F07860?
Eliminate the external cause at the signal wired to p2106 first, then acknowledge the fault — acknowledgement is immediate, and a POWER ON also removes it.
Which parameter belongs to F07860?
p2106 (BI: External fault 1). Its interconnection tells you which external signal source triggered the message.
Can F07860 also appear as a warning?
Yes — depending on the drive's configuration the same condition can be issued as an alarm (A); as an alarm it has no reaction and needs no acknowledgement.
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