What it means
F30037 reports that the temperature in the rectifier of the power unit has exceeded the permissible temperature limit. The drive reacts with OFF2 and the fault must be acknowledged before the drive can run again. The fault value stored with the code carries the temperature that triggered the trip.
Why it appears
- Insufficient cooling, for example because a fan has failed.
- The power unit is overloaded.
- The ambient temperature is too high.
- A line supply phase failure.
What to check
- Check whether the fan is running.
- Check the fan elements.
- Check whether the ambient temperature is in the permissible range.
- Check the motor load.
- Check the line supply phases.
Reading the message value
- The fault value (r0949, interpret decimal) contains the temperature, given in units of 0.01 °C.
Parameters the manual names
- r0949 — read the fault value as a decimal number: for F30037 it shows the rectifier temperature that caused the fault, in units of 0.01 °C.
Acknowledging and restarting
The fault is acknowledged immediately, but only once the rectifier has cooled down: This fault can only be acknowledged after the alarm threshold for alarm A05004 has been undershot.
Wait until the temperature falls below the alarm threshold of A05004, then acknowledge the fault and restart the drive.
What differs between the drive families
Straight from the manuals' own fields — F30037 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY | Power electronics faulted (5) | Power Module | SINAMICS S120, S150 List Manual · p. 2951 |
| G130, G150 | OFF2 | IMMEDIATELY | Power electronics faulted (5) | Power Module | SINAMICS G130, G150 List Manual · p. 1662 |
| G120 | OFF2 | IMMEDIATELY | Power electronics faulted (5) | — | SINAMICS G120 · p. 914 |
| G120XA | OFF2 | IMMEDIATELY | — | — | SINAMICS G120XA PN converter · p. 1160 |
| G115D | — | — | — | — | SINAMICS G115D distributed drive · p. 396 |
| G120C | — | — | — | — | SINAMICS G120C Converters · p. 387 |
The drives this code lives on
F30037 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 F30037 mean on a SINAMICS drive?
It reports that the temperature in the rectifier of the power unit has exceeded the permissible temperature limit. The fault value holds the measured temperature in units of 0.01 °C.
Why will F30037 not acknowledge?
The fault can only be acknowledged after the alarm threshold for alarm A05004 has been undershot. Let the rectifier cool down first, then acknowledge the fault and restart.
What should I check when F30037 appears?
Check whether the fan is running, check the fan elements, check that the ambient temperature is in the permissible range, check the motor load and check the line supply phases.
How hot was the rectifier when F30037 tripped?
Read the fault value r0949 and interpret it as a decimal number: it gives the temperature in units of 0.01 °C.
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