What it means
F30022 means that the monitoring of the collector-emitter voltage (U_ce) of the semiconductor in the power unit has responded. The causes, checks and fault-value decoding below are printed identically for the S120, S150, G130, G150, G120 and G120XA. The G115D and G120C manuals list the same code only under the title “Power Module: Monitoring UCE” and add no causes or remedies of their own.
Why it appears
- The fiber-optic cable is interrupted.
- The power supply of the IGBT gating module (24 V) is missing.
- There is a short-circuit at the power unit output.
- A semiconductor in the power unit is defective.
What to check
- Check the fiber-optic cable and replace it if required.
- Check the 24 V power supply of the IGBT gating module.
- Check the power cable connections.
- Identify the defective semiconductor and replace it.
Reading the message value
The drive stores the fault cause as a binary pattern in r0949, displayed as “%1 bin”. The bits have the following meaning:
- Bit 0: Short-circuit in phase U
- Bit 1: Short circuit in phase V
- Bit 2: Short-circuit in phase W
- Bit 3: Light transmitter enable defective
- Bit 4: U_ce group fault signal interrupted
Parameters the manual names
- r0949 — read the fault value of F30022 here and interpret it binary: the set bits show which phase (U, V or W) reports the short-circuit, or whether the light transmitter enable or the U_ce group fault signal is interrupted.
Acknowledging and restarting
When the fault trips, the drive goes to OFF2. It is acknowledged with POWER ON: switch the power supply of the drive off and on again. Once the supply is back up, the fault is cleared and the drive can be restarted.
What differs between the drive families
Straight from the manuals' own fields — F30022 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | POWER ON | Ground fault / inter-phase short-circuit detected (7) | Power Module | SINAMICS S120, S150 List Manual · p. 2945 |
| G130, G150 | OFF2 | POWER ON | Ground fault / inter-phase short-circuit detected (7) | Power Module | SINAMICS G130, G150 List Manual · p. 1656 |
| G120 | OFF2 | POWER ON | Ground fault / inter-phase short-circuit detected (7) | — | SINAMICS G120 · p. 908 |
| G120XA | OFF2 | POWER ON | — | — | SINAMICS G120XA PN converter · p. 1155 |
| G115D | — | — | — | — | SINAMICS G115D distributed drive · p. 396 |
| G120C | — | — | — | — | SINAMICS G120C Converters · p. 387 |
The drives this code lives on
F30022 is described for G115D, G120, G120C, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F30022 mean on a SINAMICS drive?
The monitoring of the collector-emitter voltage (U_ce) of the semiconductor in the power unit has responded. The manual names an interrupted fiber-optic cable, a missing 24 V supply for the IGBT gating module, a short-circuit at the power unit output or a defective semiconductor as possible causes.
How is fault F30022 acknowledged and cleared?
The fault is acknowledged with POWER ON: switch the power supply of the drive off and on again. After the supply returns, the fault is cleared and the drive can be restarted.
How can I see which phase triggered F30022?
Read r0949 and interpret it binary: bit 0 means a short-circuit in phase U, bit 1 in phase V and bit 2 in phase W. Bit 3 reports a defective light transmitter enable and bit 4 an interrupted U_ce group fault signal.
Does F30022 also exist on the G120C and G115D?
Yes, their manuals list the code under the title “Power Module: Monitoring UCE”, but they print no causes or remedies of their own for it.
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