What it means
The manual titles this condition TM: Module overtemperature
: the temperature inside a Terminal Module has gone above the highest permissible limit. Depending on how the drive is configured, the same condition can also be raised as a fault (F) or issued without any reaction (N). The S120/S150 and G130/G150 manuals describe the message identically, naming the Terminal Module as the affected component.
Why it appears
- The temperature inside the Terminal Module has climbed above the highest permissible limit.
What to check
- Reduce the ambient temperature around the Terminal Module.
- If the message still returns after the module has cooled, replace the Terminal Module.
Acknowledging and restarting
As an alarm, A35910 needs no acknowledgment — once the Terminal Module has cooled, the message clears by itself. If the drive is configured to raise this same condition as a fault, it is acknowledged immediately by a POWER ON, so switching the drive power on again clears it.
The same on every family
Every manual that describes A35910 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Overtemperature of the electronic components (6) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 3243 |
| G130, G150 | NONE | NONE | Overtemperature of the electronic components (6) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1905 |
The drives this code lives on
A35910 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A35910 mean on a SINAMICS drive?
The temperature inside a Terminal Module has risen above the highest permissible limit. The same condition can also appear as a fault or without any reaction, depending on the configuration.
How do I fix A35910?
Reduce the ambient temperature around the Terminal Module. If the message still comes back, replace the Terminal Module.
Does A35910 have to be acknowledged?
Not as an alarm — it clears by itself once the module has cooled. When the drive raises the same condition as a fault, a POWER ON acknowledges it immediately.
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 A35xxx group · SINAMICS manuals · Siemens manuals