What it means
A07852 is the externally defined alarm "External alarm 3". The drive raises it when the condition for "External alarm 3" is satisfied. The alarm is initiated by a 1/0 edge of the signal interconnected at binector input p2117, so the trigger arrives from outside through this input. Depending on how the drive is configured, the same condition can also be output as fault F07852 instead of the alarm A07852.
Why it appears
- The signal interconnected at binector input p2117 has changed from 1 to 0; this 1/0 edge initiates "External alarm 3".
- With that edge, the condition for "External alarm 3" is satisfied — the drive only reports the state of this external signal, it has found no fault of its own.
What to check
- Check p2117 to establish which signal source is interconnected as the trigger of this alarm (p2117 is parameterized as BI: External alarm 3).
- Go to that signal source and remove what makes its signal change from 1 to 0 — the remedy the manuals give is to
Eliminate the causes of this alarm.
Parameters the manual names
- p2117 — binector input "BI: External alarm 3": the input through whose 1/0 edge the alarm is initiated; use it to find the signal source that triggers A07852.
Acknowledging and restarting
As an alarm, A07852 requires no acknowledgement and the drive takes no automatic response; the message is dealt with by eliminating the cause at the signal source interconnected at p2117. If the drive is configured to output the same condition as fault F07852, it must be acknowledged immediately — a POWER ON also clears it — and even then the drive executes no automatic shutdown response.
What differs between the drive families
Straight from the manuals' own fields — A07852 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | External measured value / signal state outside the permissible range (16) | None | SINAMICS S120, S150 List Manual · p. 2870 |
| G130, G150 | NONE | NONE | External measured value / signal state outside the permissible range (16) | None | SINAMICS G130, G150 List Manual · p. 1602 |
| G120 | NONE | NONE | External measured value / signal state outside the permissible range (16) | — | SINAMICS G120 · p. 883 |
| G120XA | NONE | NONE | — | — | SINAMICS G120XA PN converter · p. 1135 |
| G115D | — | — | — | — | SINAMICS G115D distributed drive · p. 394 |
The drives this code lives on
A07852 is described for G115D, G120, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does A07852 mean on a SINAMICS drive?
It is the alarm "External alarm 3": the condition for this externally defined alarm is satisfied because the signal interconnected at binector input p2117 has changed from 1 to 0. The alarm is initiated by this 1/0 edge.
How do I clear alarm A07852?
Eliminate the causes of the alarm at the signal source interconnected at p2117. As an alarm it needs no acknowledgement; only the fault variant F07852 must be acknowledged immediately, and a POWER ON also clears it.
What is p2117?
p2117 is the binector input (BI: External alarm 3) whose 1/0 edge initiates this alarm. Check it to find which external signal source triggers A07852.
Which SINAMICS drives have A07852?
The alarm is described for SINAMICS G115D, G120, G120XA, G130, G150, S120 and S150, in each case as an external alarm triggered via binector input p2117.
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 A07xxx group · SINAMICS manuals · Siemens manuals