What it means
On Encoder 2, the drive continuously compares the position carried by the Hall sensor signals and by track C/D against the position from the incremental tracks A/B. The fault is raised when the error on track C/D is greater than +/-15 ° mechanical or +/-60 ° electrical, or when the error on the Hall signals is greater than +/-60 ° electrical. One period of track C/D corresponds to 360 ° mechanical, and one period of the Hall signal corresponds to 360 ° electrical. Depending on how the drive is configured, the same condition can also be issued as an alarm or with no reaction at all. Note that after the fine synchronization using one reference mark — or 2 reference marks for distance-coded encoders — the drive no longer initiates this fault, but instead alarm A32429.
Why it appears
- Track C or D is not connected.
- Hall sensors are connected as an equivalent for the C/D tracks with the incorrect rotational sense.
- The supply values are not accurate enough.
What to check
- Check whether track C or D is not connected.
- Correct the direction of rotation of the Hall sensor that may be connected as an equivalent for track C/D.
- Check that the encoder cables are routed in compliance with EMC.
- Check the adjustment of the Hall sensor.
Reading the message value
- The drive stores the measured deviation in r0949; the value is to be interpreted as a decimal.
- For track C/D: the measured deviation as a mechanical angle — 16 bits with sign, 182 dec corresponds to 1 °.
- For the Hall signals: the measured deviation as an electrical angle — 16 bits with sign, 182 dec corresponds to 1 °.
Parameters the manual names
- r0949 (fault value) — read the measured position deviation for this fault here, interpreted as a decimal; the signed 16-bit value counts 182 dec for every 1 °.
Acknowledging and restarting
The fault can only be acknowledged once the pulses are inhibited: let the drive run down with its configured reaction first, then acknowledge the fault in the usual way for the drive. After the cause has been removed and the fault acknowledged, the drive can be restarted.
What differs between the drive families
Straight from the manuals' own fields — F32129 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) | PULSE INHIBIT | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS S120, S150 List Manual · p. 3092 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) | PULSE INHIBIT | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS G130, G150 List Manual · p. 1772 |
The drives this code lives on
F32129 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 F32129 mean?
The Encoder 2 monitoring has measured a position difference between the Hall sensor or track C/D and the tracks A/B that is too large — more than +/-15 ° mechanical or +/-60 ° electrical on track C/D, or more than +/-60 ° electrical on the Hall signals.
How do I evaluate the fault value of F32129?
Read r0949 as a decimal: a signed 16-bit angle value in which 182 dec corresponds to 1 °. It is a mechanical angle when track C/D is affected and an electrical angle for the Hall signals.
Why does the drive show alarm A32429 instead of fault F32129?
After the fine synchronization using one reference mark — or 2 reference marks for distance-coded encoders — the drive no longer initiates fault F32129 for this condition, but instead alarm A32429.
What typically causes fault F32129?
A missing connection on track C or D, a Hall sensor connected as an equivalent for the C/D tracks with the wrong rotational sense, or supply values that are not accurate enough. Also check EMC-compliant routing of the encoder cables and the adjustment of the Hall sensor.
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