What it means
A37041 is an alarm from the HF Damping Module: the module reports a fault in its 24 V power supply because the voltage has undershot the 16 V threshold. Depending on the drive's configuration, the same condition can also be output as a fault instead of an alarm.
Why it appears
- The 24 V power supply for the HF Damping Module is faulty.
- The supply voltage has undershot the 16 V threshold.
What to check
- Check the 24 V DC voltage supply of the HF Damping Module.
- Carry out a POWER ON for the component: switch it off and switch it on again.
Reading the message value
- The message value is the alarm value, which the drive writes to r2124.
- Interpret the value in r2124 as a decimal number: it is the 24 V voltage in steps of 0.1 V.
Parameters the manual names
- r2124 (alarm value): read here to see the value of this alarm — interpreted as a decimal number it gives the 24 V voltage in steps of 0.1 V.
Acknowledging and restarting
Once the 24 V DC supply has been checked, carry out a POWER ON for the component — switch it off and switch it on again. If the drive is configured to output the condition as a fault, this POWER ON acknowledges it immediately.
The same on every family
Every manual that describes A37041 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Supply voltage fault (undervoltage) (3) | None | SINAMICS S120, S150 List Manual · p. 3264 |
The drives this code lives on
A37041 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A37041 on my SINAMICS mean?
The HF Damping Module is reporting a fault in its 24 V power supply: the voltage has undershot the 16 V threshold.
How do I clear A37041?
Check the 24 V DC voltage supply of the HF Damping Module, then carry out a POWER ON — switch the component off and switch it on again.
Where can I read the actual voltage for A37041?
In r2124. Interpret the alarm value as a decimal number; it gives the 24 V voltage in steps of 0.1 V.
Can A37041 also appear as a fault?
Yes. Depending on the drive's configuration, the same condition can be output as a fault instead of an alarm; in that case it is acknowledged immediately by a POWER ON.
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 A37xxx group · SINAMICS manuals · Siemens manuals