What it means
F07861 is raised when the externally defined condition for "External fault 2" is satisfied: the binary signal that the application interconnects at binector input p2107 executes a 1/0 edge, i.e. an external signal source drops its signal. The drive itself detects no component fault and reports no message value. Depending on the drive configuration, the same condition can also be output as an alarm instead of a fault. By default the drive coasts down and must be acknowledged before it will start. Neighbouring messages, listed separately: F07860 (External fault 1) and F07862 (External fault 3).
Why it appears
- The condition for "External fault 2" is satisfied — binector input p2107 has executed a 1/0 edge, i.e. the external signal source has dropped the signal it reports to the drive. Every manual describes this trigger identically for all drive objects, so no component-specific cause exists.
What to check
- Look up which signal your application interconnects at p2107 (BI: External fault 2); this interconnection is the source that raised the fault.
- At that external source, establish why the signal dropped from 1 to 0 and eliminate the causes of this fault there.
- Acknowledge the fault; acknowledgement is immediate and, depending on the setting, a power-on cycle may be prescribed. The drive can then be restarted.
Parameters the manual names
- p2107 (BI: External fault 2) — the binector input whose 1/0 edge initiates F07861; read its interconnection to find which external signal raised the fault.
Acknowledging and restarting
Eliminate the causes of the fault first, then acknowledge it; acknowledgement is immediate and, depending on the configuration, a power-on cycle may be prescribed. When the drive outputs this condition as an alarm instead of a fault, no reaction takes place and no acknowledgement is required.
What differs between the drive families
Straight from the manuals' own fields — F07861 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 |
The drives this code lives on
F07861 is described for G120, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What triggers fault F07861 (External fault 2)?
A 1/0 edge at binector input p2107: the externally defined condition for "External fault 2" is satisfied, so an external signal source has dropped its signal. No drive component is named as a cause.
Why does my drive stop with F07861?
By default the drive coasts down when the external fault is raised and must be acknowledged before it will start. Depending on the configuration, the same condition may instead appear as an alarm with no reaction.
How do I clear fault F07861?
Eliminate the cause at the external signal source, then acknowledge the fault; acknowledgement is immediate and a power-on cycle may be prescribed.
Which parameter is behind F07861?
p2107 (BI: External fault 2). Its interconnection shows which external signal initiates the fault with a 1/0 edge.
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