Applicable Systems
S7-1200
S7-1500
S7-300
S7-400
LOGO!
SINAMICS
Symptoms
Mains supply phase loss detected.
Possible Causes
- Missing input phase
- Input fuse blown
- Loose input connection
Troubleshooting Steps
- Step 1: Measure all three input phases
All phases present - Step 2: Check input fuses
All fuses intact - Step 3: Inspect input connections
All connections tight
How to Reset
Reset via operator panel after restoring all phases.
Source: Siemens SINAMICS G120 List Manual
Category: PLC & VFD