Siemens SINAMICS G120 Error Code F31148

Siemens PLC & VFD Major Encoder

Model: SINAMICS G120 | Code: F31148

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

Symptoms

Encoder motor feedback mismatch: feedback does not match motor.

Possible Causes

  • Wrong encoder for motor
  • Motor changed without config update
  • Encoder mounting error

Troubleshooting Steps

  1. Step 1: Verify encoder matches motor
    Encoder compatible with motor
  2. Step 2: Update motor configuration
    Configuration matches motor
  3. Step 3: Check encoder mounting
    Mounting correct and secure

How to Reset

Reset via operator panel after feedback mismatch is corrected.

Source: Siemens SINAMICS G120 List Manual

Category: PLC & VFD