Siemens SINAMICS G120 Error Code F30028

Siemens PLC & VFD Critical Overcurrent

Model: SINAMICS G120 | Code: F30028

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

Symptoms

Power module overcurrent: current exceeds trip threshold.

Possible Causes

  • Motor load too high
  • Output short
  • IGBT switching fault

Troubleshooting Steps

  1. Step 1: Check motor load
    Current within rated range
  2. Step 2: Inspect output cables
    No short circuit
  3. Step 3: Test IGBT module
    Module switching correctly

How to Reset

Reset via operator panel after resolving overcurrent.

Related Siemens Fault Codes

Source: Siemens SINAMICS G120 List Manual

Category: PLC & VFD