Siemens SINAMICS G120 Error Code F31152

Siemens PLC & VFD Major Encoder

Model: SINAMICS G120 | Code: F31152

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

Symptoms

Encoder overcurrent: encoder current draw exceeds limit.

Possible Causes

  • Encoder internal short
  • Encoder wiring short
  • Encoder component failure

Troubleshooting Steps

  1. Step 1: Check encoder current draw
    Current within rated range
  2. Step 2: Inspect encoder wiring for shorts
    No short circuits
  3. Step 3: Replace encoder if faulty
    New encoder draws correct current

How to Reset

Reset via operator panel after encoder current is normal.

Related Siemens Fault Codes

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Source: Siemens SINAMICS G120 List Manual

Category: PLC & VFD