Siemens SINAMICS G120 Error Code F30022

Siemens PLC & VFD Major Ground Fault

Model: SINAMICS G120 | Code: F30022

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

Symptoms

Power module ground fault: leakage current detected.

Possible Causes

  • Motor cable insulation breakdown
  • Motor winding to ground
  • Drive output ground leak

Troubleshooting Steps

  1. Step 1: Megger test motor to ground
    Insulation > 1 MOhm
  2. Step 2: Inspect motor cable
    No ground fault path
  3. Step 3: Disconnect motor and test
    Fault clears without load

How to Reset

Reset via operator panel after fixing ground fault.

Related Siemens Fault Codes

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Source: Siemens SINAMICS G120 List Manual

Category: PLC & VFD