F33135 — Encoder 3: Fault when determining the position

F33135 is raised when encoder 3 signals a fault while determining its singleturn position. The encoder holds an internal status/fault word that it delivers bit by bit: some of the bits trigger this fault, the others are pure status displays. The drive copies the word into the fault value, so the bit pattern shows exactly which condition the encoder reported. Where the manual gives two designations for a bit, the first applies to DRIVE-CLiQ encoders and the second to EnDat 2.2 encoders; the singleturn bits listed below carry a single designation.

• Encoder 3 itself has identified a position determination fault in the singleturn range and reports it through its internal status/fault word; the set bits are what trigger the fault.
• The concrete condition is one of the encoder's singleturn-related fault bits: lighting, signal amplitude, singleturn position, overvoltage, undervoltage, overcurrent, a singleturn system fault or a singleturn power down. The fault value shows which one applies.

1. Read the fault value in r0949 and interpret it in binary: the bit pattern tells you which singleturn condition encoder 3 has reported (see the bit list below).
2. Replace the encoder if necessary.
3. If an EnDat 2.2 encoder is affected, note that it may only be removed and inserted while in the "Park" state.

• Bits 0 and 1 (F1, F2) and bit 23 (singleturn position 2) are safety status displays only — they appear in the value but do not themselves trigger this fault.
• Bit 16: lighting.
• Bit 17: signal amplitude.
• Bit 18: singleturn position 1.
• Bit 19: overvoltage.
• Bit 20: undervoltage.
• Bit 21: overcurrent.
• Bit 24: singleturn system.
• Bit 25: singleturn power down.

• r0949 — read the fault value here and interpret it in binary to identify which singleturn condition encoder 3 reported.

Once the reported condition has been corrected, acknowledge the fault and restart the drive. If an EnDat 2.2 encoder was removed while not in the "Park" state, the manual additionally requires a POWER ON (switch-off/switch-on) after the encoder has been reinserted before the fault can be acknowledged.