What it means
F32851 reports that a DRIVE-CLiQ communication error has occurred on the path from the Sensor Module of encoder 2 to the Control Unit: the DRIVE-CLiQ component did not set the sign-of-life to the Control Unit. The fault is raised on the drive object that uses this encoder and must be acknowledged before the drive can be restarted. Depending on how the drive is configured, the same condition can also be signalled as an alarm or with no reaction.
Why it appears
- A DRIVE-CLiQ communication error has occurred from the Sensor Module (encoder 2) involved to the Control Unit.
- The DRIVE-CLiQ component did not set the sign-of-life to the Control Unit.
- 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.
- Carry out a POWER ON (switch-off/switch-on) for the component involved.
Reading the message value
- The drive stores the message value in r0949 (fault) or r2124 (alarm), coded as 0000yyxx hex.
- yy = component number — printed as placeholder %1 in the message value.
- xx = error cause — printed as placeholder %2; for this fault it is 10 (= 0A hex), i.e. the sign-of-life bit in the receive telegram is not set.
Parameters the manual names
- r0949 — fault value: read the coded component number and fault cause of F32851 here (0000yyxx hex).
- r2124 — alarm value: holds the same coding when the condition is signalled as an alarm.
Acknowledging and restarting
Acknowledge the fault at the operator panel or in the commissioning tool once the firmware upgrade or the POWER ON of the component involved has been carried out; the affected drive object can then be started again. Where the condition is configured as an alarm, the same measures clear it and no acknowledgement is needed.
What differs between the drive families
Straight from the manuals' own fields — F32851 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Servo: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) Vector: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) Hla: OFF1 (NONE, OFF2, OFF3) | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | Sensor Module Encoder 2 | SINAMICS S120, S150 List Manual · p. 3121 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) | IMMEDIATELY | Internal (DRIVE-CLiQ) communication error (12) | Sensor Module Encoder 2 | SINAMICS G130, G150 List Manual · p. 1798 |
The drives this code lives on
F32851 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 F32851 mean in SINAMICS?
The Control Unit is no longer receiving the sign-of-life from the Sensor Module of encoder 2 over DRIVE-CLiQ. Fault cause 10 (= 0A hex) says that the sign-of-life bit in the receive telegram is not set.
How do I clear F32851?
Upgrade the firmware of the component involved or carry out a POWER ON (switch-off/switch-on) for it, then acknowledge the fault so the drive object can be restarted.
Where can I see which component triggered F32851?
In r0949 (fault value) or r2124 (alarm value). The value is coded 0000yyxx hex, where yy is the component number and xx is the error cause.
Can F32851 also appear as an alarm?
Yes. Depending on how the drive is configured, the same condition can be signalled as an alarm or with no reaction; the alarm variant requires no acknowledgement.
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 F32xxx group · SINAMICS manuals · Siemens manuals