What it means
F34835 reports a cyclic data transfer error on the DRIVE-CLiQ link between the Control Unit and the Voltage Sensing Module (VSM) involved: the two nodes do not send and receive in synchronism, so the cyclic telegrams between them are interrupted. The component number of the affected VSM and the exact transfer error are coded in the fault value (see below). Depending on the drive object concerned, the drive either switches off or the fault is only signalled without an automatic trip; the drive's configuration decides.
Why it appears
- A DRIVE-CLiQ communications error has occurred from the Control Unit to the Voltage Sensing Module (VSM) involved.
- The nodes do not send and receive in synchronism.
- The reported error cause is one of the following, coded in the fault value: the cyclic telegram has not been received, a timeout in the telegram receive list, or a timeout in the telegram send list.
What to check
- Read the fault value in r0949 and decode it as 0000yyxx hex: yy gives the component number of the VSM involved, xx gives the error cause (the values are listed under fault value below).
- Carry out a POWER ON: switch the power supply off and on again.
- If F34835 occurs again after the POWER ON, replace the component involved (the Voltage Sensing Module).
Reading the message value
- The drive writes the component number into the first placeholder (%1) and the fault cause into the second (%2). In r0949 (fault value) / r2124 (alarm value) this is coded as 0000yyxx hex: yy = component number, xx = error cause.
- 33 (= 21 hex): The cyclic telegram has not been received.
- 34 (= 22 hex): Timeout in the telegram receive list.
- 64 (= 40 hex): Timeout in the telegram send list.
Parameters the manual names
- r0949 (fault value): holds the coded message value of this fault, 0000yyxx hex — read yy as the component number of the VSM and xx as the error cause.
- r2124 (alarm value): named alongside r0949 as the location of the same coded message value (0000yyxx hex) for this code.
Acknowledging and restarting
Acknowledge the fault on the operator panel or in the commissioning tool. The remedy is to carry out a POWER ON — switch the power supply off and on again. If F34835 occurs again afterwards, replace the component involved, the Voltage Sensing Module (VSM). Once the fault is cleared and acknowledged, the affected drive objects can be restarted.
What differs between the drive families
Straight from the manuals' own fields — F34835 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Infeed: OFF2 (NONE, OFF1) Vector: NONE (OFF1, OFF2) | — | Internal (DRIVE-CLiQ) communication error (12) | Voltage Sensing Module (VSM) | SINAMICS S120, S150 List Manual · p. 3187 |
| 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. 1857 |
The drives this code lives on
F34835 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 F34835 mean on a SINAMICS drive?
It is a cyclic data transfer error on DRIVE-CLiQ between the Control Unit and the Voltage Sensing Module (VSM): the nodes do not send and receive in synchronism.
How do I fix fault F34835?
Carry out a POWER ON, i.e. switch the power supply off and on again. If the fault comes back, replace the component involved (the VSM) and acknowledge the fault.
What is the fault value of F34835?
In r0949/r2124 it is coded 0000yyxx hex: yy is the component number, xx the error cause — 33 (21 hex) cyclic telegram not received, 34 (22 hex) timeout in the telegram receive list, 64 (40 hex) timeout in the telegram send list.
Which component causes F34835?
The Voltage Sensing Module (VSM) whose DRIVE-CLiQ cyclic transfer with the Control Unit has failed; the component number in the fault value identifies it.
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