What it means
F35851 (TM DRIVE-CLiQ (CU): Sign-of-life missing) tells you that a DRIVE-CLiQ communication error has occurred on the connection from the Terminal Module (TM) involved to the Control Unit: the DRIVE-CLiQ component did not set its sign-of-life towards the Control Unit, so the sign-of-life bit in the receive telegram is missing. The manual describes the message in the same way for the G130, G150, S120 and S150, so everything below applies to all of these. The message value identifies which component is involved and which fault cause applied — the decoding is given further down.
Why it appears
- The DRIVE-CLiQ connection from the Terminal Module (TM) involved to the Control Unit has a communication error.
- The DRIVE-CLiQ component failed to set its sign-of-life towards the Control Unit.
- The decoded fault cause is 10 (= 0A hex): the sign-of-life bit in the receive telegram is not set.
What to check
- Identify the affected component: read the coded message value in r0949 (or r2124). It is coded as 0000yyxx hex, where yy is the component number and xx the error cause — for this fault the cause reads 10 (= 0A hex).
Upgrade the firmware of the component involved.
This is the only remedy the manual gives for F35851.
Reading the message value
- The message value contains the component number (%1) and the fault cause (%2).
- The manual codes the message value (r0949/r2124) as 0000yyxx hex: yy = component number, xx = error cause.
- Decoded fault cause for this code: 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 F35851 here to extract the component number (yy) and the fault cause (xx).
- r2124 (alarm value): the manual names it alongside r0949 as the place where the same coded message value can be read.
Acknowledging and restarting
The fault must be acknowledged immediately. The drive has executed an OFF1 stop response (OFF2 is the alternative the manual shows), so the drive is stopped and will not start again until the fault has been acknowledged; after acknowledgement, restart the drive.
The same on every family
Every manual that describes F35851 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF1 (OFF2) | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 3237 |
| G130, G150 | OFF1 (OFF2) | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1899 |
The drives this code lives on
F35851 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 F35851 mean on a SINAMICS G130, G150, S120 or S150?
A Terminal Module connected over DRIVE-CLiQ did not set its sign-of-life to the Control Unit, so the drive reports a DRIVE-CLiQ communication error. The fault cause is 10 (= 0A hex): the sign-of-life bit in the receive telegram is not set.
How do I find out which Terminal Module triggered F35851?
Read the coded message value in r0949. In the format 0000yyxx hex, yy gives the component number of the module involved and xx the error cause.
How do I clear F35851?
The manual's remedy is to upgrade the firmware of the component involved. Afterwards the fault is acknowledged immediately and the drive restarted.
What happens to the drive when F35851 occurs?
The drive executes an OFF1 stop response (OFF2 is the alternative shown). The fault must be acknowledged immediately before the drive can run again.
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 F35xxx group · SINAMICS manuals · Siemens manuals