Siemens SINAMICS G120 Error Code F30002

Siemens PLC & VFD Critical Overvoltage

Model: SINAMICS G120 | Code: F30002

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.

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Source: Siemens SINAMICS G120 List Manual

Category: PLC & VFD