Applicable Systems
S7-1200
S7-1500
S7-300
S7-400
LOGO!
SINAMICS
Symptoms
Power module DC link overvoltage.
Possible Causes
- Deceleration too fast
- No brake chopper
- Mains voltage too high
Troubleshooting Steps
- Step 1: Increase deceleration time
No overvoltage trip - Step 2: Connect brake resistor
DC link voltage controlled - Step 3: Check mains voltage
Voltage within rated range
How to Reset
Reset via operator panel after resolving overvoltage.
Source: Siemens SINAMICS G120 List Manual
Category: PLC & VFD