What it means
F37851 is raised by the Control Unit when the HF Damping Module no longer delivers its sign-of-life over DRIVE-CLiQ: the DRIVE-CLiQ component did not set the sign-of-life to the Control Unit, so the sign-of-life bit in the receive telegram is missing. The manual encodes this condition as fault cause 10 (= 0A hex).
Why it appears
- A DRIVE-CLiQ communication error between the HF Damping Module and the Control Unit.
- The DRIVE-CLiQ component did not set the sign-of-life towards the Control Unit.
- Encoded fault cause 10 (= 0A hex): the sign-of-life bit in the receive telegram is not set.
What to check
- Upgrade the firmware of the component involved; the manual's note identifies it as the HF Damping Module.
Reading the message value
- The manual prints the message value as component number (%1) and fault cause (%2) and decodes the content of r0949/r2124 as 0000yyxx hex: yy is the component number, xx the fault cause.
- Fault cause 10 (= 0A hex): the sign-of-life bit in the receive telegram is not set.
Parameters the manual names
- r0949 — fault value: read the coded message value of F37851 here and split it as 0000yyxx hex into component number (yy) and fault cause (xx).
- r2124 — alarm value: the same 0000yyxx hex decoding is given for this parameter, so the component number and fault cause can also be taken from it.
Acknowledging and restarting
Acknowledge the fault immediately once the firmware upgrade of the HF Damping Module has been carried out. The drive takes no automatic protective action for this fault, so the acknowledge on the operator panel or in the commissioning tool is the step that clears the message.
The same on every family
Every manual that describes F37851 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | None | SINAMICS S120, S150 List Manual · p. 3273 |
The drives this code lives on
F37851 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F37851 mean on a SINAMICS S120 or S150?
The Control Unit reports that the HF Damping Module did not set its sign-of-life over DRIVE-CLiQ: the sign-of-life bit in the receive telegram is missing (fault cause 10 = 0A hex).
How do I clear F37851?
Upgrade the firmware of the component involved, the HF Damping Module, and then acknowledge the fault immediately.
How is the message value of F37851 decoded?
It is coded 0000yyxx hex in r0949 or r2124: yy is the component number, xx the fault cause, and a cause of 10 (0A hex) means the sign-of-life bit in the receive telegram was not set.
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 F37xxx group · SINAMICS manuals · Siemens manuals