F31121 (N, A) Encoder 1: Determined Commutation Position Incorrect; Encoder 1: Sensor Module Hardware Fault; F31123 (N, A) Encoder 1: Signal Level A/B Outside Tolerance - Siemens SINAMICS S210 Operating Instructions Manual

Remedy: For fault value, bit 0 = 1:
- correct encoder cable connected?
- check the plug connections of the encoder cable.
- SMC30: Check the parameterization (p0404.22).
For fault value, bit 1 = 1:
- correct encoder cable connected?
- replace the encoder or encoder cable.
For fault value, bit 2 = 1:
- correct encoder cable connected?
- replace the encoder or encoder cable.
For fault value, bit 3 = 1:
- correct encoder cable connected?
- replace the encoder or encoder cable.
For fault value, bit 5 = 1:
- Measuring unit correctly connected at the converter?
- Replace the measuring unit or the cable to the measuring unit.
For fault value, bit 6, 7 = 1:
- Replace the defective EnDat 2.2 converter.
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE

F31121 (N, A) Encoder 1: Determined commutation position incorrect

Message value: -
Drive object: All objects
Reaction: Servo: ENCODER (NONE)
Acknowledge: PULSE INHIBIT
Cause: A commutation position actual value sensing error was detected.
Remedy: Replace the motor with DRIVE-CLiQ or the appropriate Sensor Module.
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F31122

Encoder 1: Sensor Module hardware fault

Message value: %1
Drive object: All objects
Reaction: Servo: ENCODER
Acknowledge: IMMEDIATELY
Cause: An internal Sensor Module hardware fault was detected.
Fault value (r0949, interpret decimal):
1: Reference voltage error.
2: Internal undervoltage.
3: Internal overvoltage.
Remedy: Replace the motor with DRIVE-CLiQ or the appropriate Sensor Module.

F31123 (N, A) Encoder 1: Signal level A/B outside tolerance

Message value: Fault cause: %1 bin
Drive object: All objects
SINAMICS S210 servo drive system
Operating Instructions, 12/2017, A5E41702836B AA
Faults and alarms
13.2 List of faults and alarms
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