What it means
Alarm A35012 is issued by the TM54F Terminal Module. It is active while the forced checking procedure — the test stop — for the failsafe digital inputs/outputs (F-DI/F-DO) is currently in progress. F-DI stands for Failsafe Digital Input and F-DO for Failsafe Digital Output. The alarm only tells you that this check is running at the moment; the manuals for the G130, G150, S120 and S150 describe it identically.
Why it appears
- The TM54F is currently running its forced checking procedure (test stop) for the failsafe digital inputs/outputs (F-DI/F-DO).
What to check
- No action is needed: the drive performs the test stop on its own, and the manual names no setting, parameter or inspection associated with this alarm.
- Watch for the alarm to disappear by itself — it is automatically withdrawn once the test stop has ended successfully or has been canceled because a fault condition occurred.
Acknowledging and restarting
No acknowledgment is required. The drive also takes no automatic action in response to this alarm. A35012 withdraws itself once the test stop for the F-DI/F-DO has ended successfully or has been canceled because a fault condition occurred during the check.
The same on every family
Every manual that describes A35012 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Safety monitoring channel has identified an error (10) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 3201 |
| G130, G150 | NONE | NONE | Safety monitoring channel has identified an error (10) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1870 |
The drives this code lives on
A35012 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 SINAMICS alarm A35012 mean?
It is a TM54F alarm telling you that the forced checking procedure (test stop) for the failsafe digital inputs/outputs (F-DI/F-DO) is currently in progress. It reports an ongoing check rather than a malfunction.
How do I clear or acknowledge alarm A35012?
You do not need to acknowledge it. The alarm is withdrawn automatically after the test stop has ended successfully or has been canceled because a fault condition occurred.
Does alarm A35012 stop the drive?
No. The manuals assign no automatic reaction and no acknowledgment to this alarm; it only reports that the F-DI/F-DO test stop is running and then clears itself.
What do F-DI and F-DO stand for in A35012?
F-DI is the Failsafe Digital Input and F-DO the Failsafe Digital Output of the TM54F. The test stop reported by this alarm is the forced check of these failsafe channels.
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