What it means
F30314 is raised by the Power Module when the 24 V power supply that runs through the Power Module (PM) is overloaded. The manual ties the fault to one specific condition: an external 24 V power supply via X124 on the Control Unit is not connected. Without that external feed, the Power Module alone has to carry the 24 V supply and becomes overloaded. The manuals for the G130/G150 and for the S120/S150 describe this code identically, so the same explanation applies across all four families. The drive coasts down and does not restart until the fault has been acknowledged with a power-off/power-on cycle.
Why it appears
- The 24 V power supply through the Power Module (PM) is overloaded.
- An external 24 V power supply via X124 on the Control Unit is not connected.
What to check
- Connect an external 24 V power supply via X124 at the Control Unit, so that the 24 V load is no longer carried by the Power Module alone.
Acknowledging and restarting
After the external 24 V supply has been connected at X124, acknowledge the fault immediately by switching the drive's power supply off and on again (POWER ON). The drive can then be restarted.
The same on every family
Every manual that describes F30314 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY (POWER ON) | Supply voltage fault (undervoltage) (3) | Power Module | SINAMICS S120, S150 List Manual · p. 2969 |
| G130, G150 | OFF2 | IMMEDIATELY (POWER ON) | Supply voltage fault (undervoltage) (3) | Power Module | SINAMICS G130, G150 List Manual · p. 1674 |
The drives this code lives on
F30314 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 F30314 mean on a SINAMICS G130, G150, S120 or S150?
It means the 24 V power supply provided through the Power Module (PM) is overloaded. The manual links this to the missing external 24 V power supply at X124 on the Control Unit.
How do I clear fault F30314?
Connect an external 24 V power supply via X124 at the Control Unit, then acknowledge the fault by switching the drive's power supply off and on again (POWER ON).
Why does the drive coast down with F30314 and not restart?
The fault triggers an OFF2 reaction, so the drive coasts down. It only accepts a restart once the fault has been acknowledged with a POWER ON.
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