What it means
F30875 (Power unit: power supply voltage failed) means that a DRIVE-CLiQ component on the power unit has signalled to the Control Unit, via DRIVE-CLiQ communication, that its supply voltage has failed. The two manuals that describe this code state the same cause and the same remedy, so one description covers every converter it applies to. On this fault the drive coasts down and the fault must be acknowledged immediately before the converter will start again.
Why it appears
- The DRIVE-CLiQ communication from the DRIVE-CLiQ component involved to the Control Unit signals that the supply voltage has failed.
- The reported fault cause is 9 (= 09 hex): the power supply voltage for the components has failed.
What to check
- Carry out a POWER ON (switch-off/switch-on).
- Check the power supply voltage wiring for the DRIVE-CLiQ component — interrupted cable, contacts and similar.
- Check the dimensioning of the power supply for the DRIVE-CLiQ component.
Reading the message value
- The drive stores the message value as: Component number: %1, fault cause: %2. The individual information is coded in the message value (r0949/r2124) as 0000yyxx hex.
- yy = component number of the affected component.
- xx = error cause — for this fault the manual prints fault cause 9 (= 09 hex), the failure of the power supply voltage for the components.
Parameters the manual names
- r0949 — fault value: read the coded message value of this fault here and split it as 0000yyxx hex to obtain the component number (yy) and the fault cause (xx, 9 = 09 hex).
- r2124 — alarm value: the manual names this register alongside r0949 as the location of the same coded value 0000yyxx hex for this message.
Acknowledging and restarting
Acknowledge the fault immediately; because the drive coasts down on this fault, it must be acknowledged before the converter will start again. The remedy begins with a POWER ON (switch-off/switch-on), after which the supply wiring and the dimensioning of the supply for the affected DRIVE-CLiQ component are checked.
The same on every family
Every manual that describes F30875 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY | Supply voltage fault (undervoltage) (3) | Power Module | SINAMICS S120, S150 List Manual · p. 3020 |
| G130, G150 | OFF2 | IMMEDIATELY | Supply voltage fault (undervoltage) (3) | Power Module | SINAMICS G130, G150 List Manual · p. 1711 |
The drives this code lives on
F30875 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 F30875 mean on a SINAMICS drive?
A DRIVE-CLiQ component has signalled to the Control Unit that its power supply voltage has failed. The fault cause is 9 (= 09 hex): the power supply voltage for the components has failed.
How do I clear fault F30875?
Acknowledge the fault immediately, carry out a POWER ON (switch-off/switch-on), then check the supply voltage wiring for the DRIVE-CLiQ component (interrupted cable, contacts) and the dimensioning of its power supply.
How do I find out which component triggered F30875?
Read the message value in r0949: it is coded 0000yyxx hex, where yy is the component number and xx the error cause — here 9 (= 09 hex).
Does F30875 mean the same thing on every converter that uses it?
Yes — the manuals describe this code with the same cause, the same checks and the same reset wherever it appears, so one description covers all of them.
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