What it means
F33136 tells you that encoder 3 has hit a fault while determining the multiturn position. The encoder reports its condition bit by bit in an internal status/fault word: some of these bits trigger this fault, the others are only status displays. The drive stores the complete word as the fault value, which you read in r0949 interpreted as a binary number, so the word shows exactly which condition the encoder has flagged.
Why it appears
- The encoder has identified a fault while determining the multiturn position and reports it through its internal status/fault word; the set multiturn bits of that word are what trigger this fault.
What to check
- Read the fault value in r0949 as a binary word; this is how you determine the detailed cause of the fault.
- Check which multiturn bit is set — it names the condition the encoder has detected in the multiturn range.
- If the set bit points to a defect in the encoder itself, replace the encoder.
Reading the message value
The fault value in r0949 is the encoder's internal status/fault word, to be interpreted binary. The bits that belong to this code are the multiturn bits:
- Bit 26: Multiturn position 1
- Bit 27: Multiturn position 2
- Bit 28: Multiturn system
- Bit 29: Multiturn power down
- Bit 30: Multiturn overflow/underflow
- Bit 31: Multiturn battery (reserved)
All other bits of the word are either pure status displays or belong to the other encoder faults, which you find as the neighbouring codes listed by name on this page.
Parameters the manual names
- r0949 — fault value: read it as a binary word here to see which multiturn bit encoder 3 has set, and so determine the detailed cause of this fault.
Acknowledging and restarting
Once the cause has been removed, acknowledge the fault in the usual way. The manuals add one special case for EnDat 2.2 encoders: An EnDat 2.2 encoder may only be removed and inserted in the "Park" state.
If such an encoder was withdrawn while not in the "Park" state, a POWER ON (switch-off/switch-on) is necessary after the encoder has been inserted again before the fault can be acknowledged.
What differs between the drive families
Straight from the manuals' own fields — F33136 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 3 | SINAMICS S120, S150 List Manual · p. 3145 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) | PULSE INHIBIT | Actual position/speed value incorrect or not available (11) | Encoder 3 | SINAMICS G130, G150 List Manual · p. 1819 |
The drives this code lives on
F33136 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 F33136 mean on a SINAMICS drive?
Encoder 3 has reported a fault while determining the multiturn position. The encoder's status/fault word, stored as the fault value in r0949 and read in binary, shows which multiturn condition triggered it.
How do I fix fault F33136?
Read the fault value in r0949 as a binary word to determine the detailed cause, and replace the encoder if necessary. After the cause is removed, acknowledge the fault in the usual way.
What is bit 28 in the F33136 fault value?
Bit 28 is the multiturn system bit of the encoder status/fault word. Bit 26 and bit 27 report the multiturn position, bit 29 the power down, bit 30 an overflow/underflow and bit 31 the multiturn battery (reserved).
Why will F33136 not acknowledge after I reconnected an EnDat encoder?
An EnDat 2.2 encoder may only be removed and inserted in the "Park" state. If it was withdrawn while not parked, the drive needs a POWER ON (switch-off/switch-on) after the encoder is inserted again before the fault can be acknowledged.
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 F33xxx group · SINAMICS manuals · Siemens manuals