What it means
F07956 tells you that the motor code of the connected motor with DRIVE-CLiQ does not match any of the possible list motor types — that is, the types offered in the motor type selection p0300. The manual names a second possibility: the connected motor with DRIVE-CLiQ might not be supported by the firmware version in use. Depending on the drive's configuration, the same condition can also be output as an alarm (A) rather than a fault.
Why it appears
- The motor code of the connected motor with DRIVE-CLiQ does not match the possible list motor types (see the selection in p0300).
- The connected motor with DRIVE-CLiQ might not be supported by this firmware version.
What to check
- Read the fault value in r0949, interpreting it decimal: it contains the motor code of the connected motor with DRIVE-CLiQ. The first three digits of this code generally correspond to the list motor type.
- Compare this motor code with the list motor types selectable in p0300.
- Connect a motor with DRIVE-CLiQ whose motor code matches — this is the remedy the manual gives: use a motor with DRIVE-CLiQ and the matching motor code.
- If the intended motor is the one connected, note that it might not be supported by this firmware version.
Reading the message value
- The drive places the motor code of the connected motor with DRIVE-CLiQ into the message value; the placeholder %1 in the message stands for this value.
- The same value can be read in r0949 — interpret it decimal.
- Decoding as the manual gives it: the first three digits of the motor code generally correspond to the list motor type.
Parameters the manual names
- p0300 — motor type selection (Mot type sel): the motor code of the connected DRIVE-CLiQ motor is checked against the motor types selectable here; a code outside this selection raises F07956.
- r0949 — fault value: holds the motor code of the connected motor with DRIVE-CLiQ for this code; read it with decimal interpretation.
Acknowledging and restarting
The fault can be acknowledged immediately. If the drive is configured to output this condition as an alarm (A) instead, that alarm requires no acknowledgment. Acknowledging does not remove the underlying mismatch: the connected motor with DRIVE-CLiQ must carry a motor code matching the list motor types for the condition to go away for good.
The same on every family
Every manual that describes F07956 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | IMMEDIATELY | Error in the parameterization / configuration / commissioning procedure (18) | Motor | SINAMICS S120, S150 List Manual · p. 2891 |
| G130, G150 | NONE | IMMEDIATELY | Error in the parameterization / configuration / commissioning procedure (18) | Motor | SINAMICS G130, G150 List Manual · p. 1618 |
The drives this code lives on
F07956 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 F07956 on a SINAMICS drive mean?
The motor code of the connected motor with DRIVE-CLiQ does not match the possible list motor types selectable in p0300. The manual also names lack of firmware support for the connected DRIVE-CLiQ motor as a possible reason.
Where can I read the motor code that triggered F07956?
In the fault value r0949, interpreted decimal — it contains the motor code of the connected motor with DRIVE-CLiQ. Its first three digits generally correspond to the list motor type.
How do I clear F07956?
Use a motor with DRIVE-CLiQ and the matching motor code; the fault itself can be acknowledged immediately. When the condition is output as an alarm (A), it needs no acknowledgment.
Can F07956 also appear as an alarm instead of a fault?
Yes. Depending on the drive's configuration, the same condition can also be output as an alarm (A).
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