Siemens SINAMICS G120 Error Code F31153

Siemens PLC & VFD Major Encoder

Model: SINAMICS G120 | Code: F31153

Applicable Systems
S7-1200 S7-1500 S7-300 S7-400 LOGO! SINAMICS

Symptoms

Encoder temperature abnormal: encoder temperature out of range.

Possible Causes

  • Encoder overheating
  • Ambient too hot
  • Encoder cooling inadequate

Troubleshooting Steps

  1. Step 1: Check encoder temperature
    Temperature within rated range
  2. Step 2: Reduce ambient temperature
    Temperature acceptable
  3. Step 3: Verify encoder cooling
    Cooling adequate

How to Reset

Reset via operator panel after encoder temperature normalizes.

Related Siemens Fault Codes

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Source: Siemens SINAMICS G120 List Manual

Category: PLC & VFD