What it means
F32117 reports an inversion error on Encoder 2. A square-wave encoder wired bipolar and double ended delivers the tracks A, B and R together with the inverted tracks A*, B* and R*; the drive raises this fault when the inverted tracks are not inverted relative to the non-inverted ones. The binary fault value in r0949 tells you which track is affected. Depending on how the drive is configured, the same condition can also be signalled as an alarm or without any reaction.
Why it appears
- At the connected square-wave encoder (bipolar, double ended), the signals A*, B* and R* are not inverted relative to the signals A, B and R.
- For an SMC30 (only Article No. 6SL3055-0AA00-5CA0 and 6SL3055-0AA00-5CA1), a CUA32 or a CU310-2 / CU310: a square-wave encoder is used that has no track R although track monitoring (p0405.2 = 1) is switched on.
What to check
- Check the encoder and its cable.
- Confirm that the encoder outputs each signal together with its inverted counterpart — A with A*, B with B*, R with R*.
- On an SMC30 of Article No. 6SL3055-0AA00-5CA0 or 6SL3055-0AA00-5CA1, check the setting of p0405: p0405.2 = 1 is only permissible when the encoder is wired to X520.
- If the encoder has no track R, set the jumpers the manual requires for the connection at X520 (SMC30), X220 (CUA32) or X23 (CU310-2, CU310): bridge pin 10 (reference signal R) with pin 7 (encoder power supply, ground) and pin 11 (reference signal R inverted) with pin 4 (encoder power supply).
Reading the message value
The drive writes the fault cause into r0949; interpret the value in binary:
- Bits 0 ... 15: Only for internal Siemens troubleshooting.
- Bit 16: Error track A.
- Bit 17: Error track B.
- Bit 18: Error track R.
Parameters the manual names
- r0949 — fault value: read it in binary for this fault; bit 16, bit 17 or bit 18 tells you whether the inversion error is on track A, B or R.
- p0405 — square-wave encoder track A/B: bit 2 switches track monitoring on; for this fault check whether p0405.2 = 1 although the encoder has no track R, and note that on the listed SMC30 versions this setting is only possible with the encoder connected at X520.
Acknowledging and restarting
After the encoder, the cable or the jumper setting has been corrected, acknowledge the fault immediately; the drive can then be restarted.
What differs between the drive families
Straight from the manuals' own fields — F32117 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 | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS S120, S150 List Manual · p. 3087 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) | IMMEDIATELY | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS G130, G150 List Manual · p. 1768 |
The drives this code lives on
F32117 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 F32117 mean on a SINAMICS drive?
Encoder 2 — a square-wave encoder with inverted signal tracks — reports that A*, B* or R* is not inverted relative to A, B or R. The binary fault value in r0949 names the affected track: bit 16 A, bit 17 B, bit 18 R.
Why do I get F32117 when my encoder has no R track?
Because track monitoring (p0405.2 = 1) is activated although the encoder has no track R. This applies to an SMC30 of Article No. 6SL3055-0AA00-5CA0 / -5CA1, a CUA32 and a CU310-2 / CU310; the manual prescribes jumpers (pin 10 to pin 7, pin 11 to pin 4) at X520, X220 or X23 for this case.
How is F32117 cleared?
Check the encoder and its cable, confirm that the encoder supplies each signal together with its inverted counterpart, and correct the p0405 or jumper setting where required. The fault is then acknowledged immediately and the drive restarted.
Can F32117 also appear as an alarm?
Yes — depending on the drive configuration, the same condition can also be issued as an alarm or without any reaction.
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