What it means
F40002 reports that a fault has occurred at the drive object connected at the DRIVE-CLiQ socket X102. The code names no fault of its own — it is a pointer: the value in r0949 (interpret decimal) is the number of the first fault that has occurred for this drive object, and the details sit in that object's fault buffer. Each DRIVE-CLiQ socket carries its own code, so this page applies only to X102. The G130/G150 and S120/S150 manuals describe the code identically.
Why it appears
- A fault has occurred at the drive object at DRIVE-CLiQ socket X102. This is the only cause the manuals give: the code signals the first fault that has occurred for this drive object and names no further cause of its own.
What to check
- Establish which drive object the message refers to — the object connected at DRIVE-CLiQ socket X102.
- Read the fault value in r0949 and interpret it as a decimal number; it is the number of the first fault that has occurred for this drive object.
- Evaluate the fault buffer of the specified object, as the remedy directs, and follow the cause and remedy given for the fault number found there.
Reading the message value
- The message value is the fault value, read in r0949. Interpret it as a decimal number: it holds the first fault that has occurred for this drive object.
Parameters the manual names
- r0949 — fault value of this message: read it here, interpreted as a decimal number, to obtain the number of the first fault that occurred for the drive object at X102.
Acknowledging and restarting
This fault triggers no automatic drive response, but it must be acknowledged immediately. Acknowledging clears only the pointer code: the fault of the drive object at X102 remains until the object's fault buffer has been evaluated and the fault found there has been remedied.
The same on every family
Every manual that describes F40002 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | NONE | IMMEDIATELY | General drive fault (19) | None | SINAMICS G130, G150 List Manual · p. 1922 |
| S120, S150 | NONE | IMMEDIATELY | General drive fault (19) | None | SINAMICS S120, S150 List Manual · p. 3279 |
The drives this code lives on
F40002 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 F40002 in SINAMICS mean?
It reports that a fault has occurred at the drive object connected at the DRIVE-CLiQ socket X102. The code is a pointer to the first fault that has occurred for this drive object.
How do I find the real cause behind F40002?
Evaluate the fault buffer of the specified drive object. The fault value in r0949, interpreted as a decimal number, gives the number of the first fault that occurred for that object.
Can F40002 simply be acknowledged?
It must be acknowledged immediately, but the acknowledgement does not remove the underlying fault. The remedy is to evaluate the fault buffer of the object at X102 and handle the fault found there.
Is F40002 the same on SINAMICS G130, G150, S120 and S150?
Yes — the manuals for all four families describe the code identically: the same meaning, the same fault value in r0949 and the same remedy.
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 F40xxx group · SINAMICS manuals · Siemens manuals