What it means
F34845 reports a DRIVE-CLiQ communications error on the link from the Control Unit to the Voltage Sensing Module (VSM). The two manuals that describe this code — for the G130/G150 and for the S120/S150 — give the same cause and the same remedy, and both restrict the fault to a single fault cause: 11 (= 0B hex), a synchronization error during alternating cyclic data transfer.
Why it appears
- A DRIVE-CLiQ communications error has occurred between the Control Unit and the Voltage Sensing Module (VSM).
- Fault cause 11 (= 0B hex): a synchronization error occurred during the alternating cyclic data transfer.
What to check
- Read the coded message value in r0949 (or r2124) to confirm the component number and the fault cause — see the decoding below.
- Carry out a POWER ON; this is the only remedy the manuals describe for this fault.
- One of the manuals adds a “See also” reference to p9916 (DRIVE-CLiQ data transfer error shutdown threshold slave) for this DRIVE-CLiQ data transfer error; no further action with this parameter is prescribed.
Reading the message value
- The message value holds two items: the component number (%1) and the fault cause (%2).
- The manual decodes the value in r0949/r2124 as 0000yyxx hex: yy = component number, xx = error cause.
- For F34845 the error cause is 11 (= 0B hex), the synchronization error during alternating cyclic data transfer.
Parameters the manual names
- r0949 — fault value: where the technician reads the coded message value of F34845 (component number and fault cause).
- r2124 — alarm value: named next to r0949 by the manual as the second location of the same coded value.
- p9916 — DRIVE-CLiQ data transfer error shutdown threshold slave: quoted in the manual's “See also” for this fault; nothing further is specified for this code.
Acknowledging and restarting
Acknowledge the fault immediately; the drive must be acknowledged before it will restart. The remedy the manuals give is to carry out a POWER ON. No other reset or restart procedure is described for this code.
What differs between the drive families
Straight from the manuals' own fields — F34845 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | Vector: NONE (OFF1, OFF2) Infeed: OFF2 (NONE, OFF1) | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | Voltage Sensing Module (VSM) | SINAMICS G130, G150 List Manual · p. 1859 |
| S120, S150 | Infeed: OFF2 (NONE, OFF1) Vector: NONE (OFF1, OFF2) | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | Voltage Sensing Module (VSM) | SINAMICS S120, S150 List Manual · p. 3189 |
The drives this code lives on
F34845 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 SINAMICS fault F34845 mean?
It is a VSM DRIVE-CLiQ cyclic data transfer error: a DRIVE-CLiQ communications error between the Control Unit and the Voltage Sensing Module (VSM). The specific fault cause is 11 (= 0B hex), a synchronization error during alternating cyclic data transfer.
How do I clear fault F34845?
Acknowledge the fault immediately and carry out a POWER ON, as the manuals instruct. This is the only remedy given for the code.
How do I decode the F34845 message value in r0949?
The value is coded 0000yyxx hex, where yy is the component number and xx is the error cause. For F34845 the error cause is 11 (= 0B hex).
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 F34xxx group · SINAMICS manuals · Siemens manuals