What it means
F30050 means that the voltage monitor in the power unit has detected an overvoltage on the module's 24 V supply. The drive switches off immediately and the motor coasts down; the fault must be cleared before the drive can run again. The G130/G150 and S120/S150 manuals describe this condition identically for the Power Module.
Why it appears
- The module's voltage monitor has detected too high a voltage on the 24 V supply of the Power Module.
What to check
- Check the 24 V power supply of the module.
- If necessary, replace the module.
Acknowledging and restarting
This fault is not cleared by a simple acknowledgment from the operator panel: the power supply must be switched off and on again. Before restarting, eliminate the cause — check the 24 V power supply and replace the module if necessary — then cycle the power and start the drive.
The same on every family
Every manual that describes F30050 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | POWER ON | Supply voltage fault (overvoltage) (3) | Power Module | SINAMICS S120, S150 List Manual · p. 2958 |
| G130, G150 | OFF2 | POWER ON | Supply voltage fault (overvoltage) (3) | Power Module | SINAMICS G130, G150 List Manual · p. 1667 |
The drives this code lives on
F30050 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F30050 mean on a SINAMICS drive?
The voltage monitor in the Power Module has signalled an overvoltage on the module's 24 V supply. The drive switches off immediately and the motor coasts down.
How do I reset fault F30050?
The fault is only acknowledged by switching the power supply off and on again. Correct the cause first — check the 24 V supply, replace the module if necessary — before cycling the power.
What should I check when F30050 appears?
Check the 24 V power supply of the module first. If the fault cannot be traced to the supply, replace the module.
Codes next to this one
Source
Written from Siemens' own List Manuals and operating instructions; every number, designation and parameter on this page is checked against them before publication.
All SINAMICS codes: fault and alarm codes · the F30xxx group · SINAMICS manuals · Siemens manuals