What it means
A30030 is the power unit's internal overtemperature alarm: the temperature inside the drive converter has exceeded the permissible temperature limit. The manuals for G120, G120XA, G130, G150, S120 and S150 describe the message with the same causes and the same remedy, so the steps below apply to every family.
Why it appears
- Cooling is insufficient or a fan has failed.
- The power unit is overloaded.
- The ambient temperature is too high.
What to check
- Check the cooling of the power unit; where the existing cooling is not enough, the remedy is to use an additional fan.
- Check whether the power unit is overloaded.
- Check that the ambient temperature is within the permissible range.
Reading the message value
- The message value carries the alarm value belonging to this alarm; the drive stores it in r2124.
- The value is interpreted decimal and the manual adds:
Only for internal Siemens troubleshooting
— no decoding of the value is printed.
Parameters the manual names
- r2124 — holds the alarm value of this message; read it as a decimal number, but the manual marks it as only for internal Siemens troubleshooting.
Acknowledging and restarting
The drive must cool down before the message can go away. In the S120/S150 description the alarm is withdrawn automatically once the temperature inside the converter has fallen below the permissible temperature limit minus 5 K. The G120, G120XA, G130 and G150 descriptions state that the message can only be acknowledged once that same condition is met. Until the power unit has cooled to that point, the alarm remains active.
What differs between the drive families
Straight from the manuals' own fields — A30030 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | Power electronics faulted (5) | Power Module | SINAMICS S120, S150 List Manual · p. 2948 |
| G130, G150 | NONE | NONE | Power electronics faulted (5) | Power Module | SINAMICS G130, G150 List Manual · p. 1659 |
| G120 | NONE | NONE | Power electronics faulted (5) | — | SINAMICS G120 · p. 912 |
| G120XA | NONE | NONE | — | — | SINAMICS G120XA PN converter · p. 1158 |
The drives this code lives on
A30030 is described for G120, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A30030 mean on a SINAMICS drive?
It means the temperature inside the power unit has exceeded the permissible temperature limit. The named causes are insufficient cooling or fan failure, overload, and an ambient temperature that is too high.
How do I clear alarm A30030?
The message only clears once the temperature inside the converter has fallen 5 K below the permissible limit. On S120 and S150 it is then withdrawn automatically; in the other manuals it must be acknowledged at that point.
Why does A30030 keep coming back?
Because one of the named causes persists: insufficient cooling or a failed fan, an overload, or an ambient temperature above the permissible range. The remedy is an additional fan where needed and checking the ambient temperature.
What is the alarm value r2124 for A30030?
r2124 holds the alarm value of the message and is interpreted decimal. The manual states it is only for internal Siemens troubleshooting, so it gives no repair hint.
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 A30xxx group · SINAMICS manuals · Siemens manuals