What it means
Alarm A07353 reports that the DC quantity control has deactivated itself. The manual names the trigger: the manipulated variable of the DC quantity control was at its limit. The code is documented for the G120XA; the G115D alarm list carries the same code but prints only its title, without a cause or remedy of its own.
Why it appears
- The DC quantity control has switched itself off.
- The manipulated variable of the DC quantity control was sitting at its limit.
What to check
- Optimize the DC quantity controller — the manual names Kp, Tn, the bandwidth and the PT2 filter as the settings to work through.
- After changing the corresponding parameters, the DC quantity control is re-enabled; confirm that the alarm has been withdrawn automatically.
Parameters the manual names
- p3857 — DC quantity controller P gain (DC_ctrl Kp): the P gain you retune when optimizing the DC quantity controller after this alarm.
- p3858 — DC quantity controller integral time (DC_ctrl Tn): the integral time you retune together with p3857 when optimizing the controller.
Acknowledging and restarting
There is no separate reset step. The manual's note reads: After changing the corresponding parameters, the DC quantity control is re-enabled and the alarm is automatically withdrawn.
Once you have optimized the controller (p3857, p3858 and the related settings), the alarm therefore disappears on its own.
The same on every family
Every manual that describes A07353 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G120XA | NONE | NONE | — | — | SINAMICS G120XA PN converter · p. 1126 |
| G115D | — | — | — | — | SINAMICS G115D distributed drive · p. 393 |
Questions technicians ask
What does alarm A07353 mean on a SINAMICS drive?
It reports that the DC quantity control has deactivated itself. The trigger named in the manual is that the manipulated variable of the DC quantity control was at its limit.
How do I clear alarm A07353?
Optimize the DC quantity controller (Kp, Tn, bandwidth, PT2 filter — see p3857 and p3858). After the parameter changes the control is re-enabled and the alarm is withdrawn automatically, so no acknowledgement is needed.
Which parameters belong to A07353?
p3857 is the DC quantity controller P gain (DC_ctrl Kp) and p3858 is the DC quantity controller integral time (DC_ctrl Tn); the bandwidth and the PT2 filter are also part of the optimization the manual names.
Does A07353 also appear on the G115D, not only the G120XA?
Yes. The G115D alarm list contains the code, but prints only the title "DC quantity control deactivated"; the cause and remedy notes come from the G120XA documentation.
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 A07xxx group · SINAMICS manuals · Siemens manuals