What it means
F35040 reports that an undervoltage condition was detected on the 24 V power supply of the Terminal Module 54F (TM54F). As a fault response, the fail-safe input terminal signals are transferred to the motion monitoring functions. The fault value stored in r0949 shows which of the two supply connections is affected.
Why it appears
- An undervoltage was detected on the 24 V power supply feeding the Terminal Module 54F (TM54F).
What to check
- Check the 24 V DC power supply for the TM54F.
- Carry out the safe acknowledgment via p10006.
Reading the message value
- The drive stores the fault cause in r0949; interpret the value in binary.
- Bit 0 = 1: power supply undervoltage at connection X524.
- Bit 1 = 1: power supply undervoltage at connection X514.
Parameters the manual names
- r0949 — fault value: read it in binary to see whether the undervoltage was reported at X524 (bit 0) or at X514 (bit 1).
- p10006 — SI Motion acknowledgment internal event F-DI (processor 1): use this parameter to carry out the safe acknowledgment that clears the fault.
Acknowledging and restarting
Once the 24 V supply has been checked and the undervoltage eliminated, the fault must be acknowledged immediately. For this code the acknowledgment is the safe acknowledgment carried out via p10006 (SI Motion acknowledgment internal event F-DI, processor 1).
The same on every family
Every manual that describes F35040 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | IMMEDIATELY | Supply voltage fault (undervoltage) (3) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 3205 |
| G130, G150 | NONE | IMMEDIATELY | Supply voltage fault (undervoltage) (3) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1874 |
The drives this code lives on
F35040 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 fault F35040 mean on a SINAMICS drive?
It reports an undervoltage condition on the 24 V power supply of the Terminal Module 54F (TM54F). As a fault response, the fail-safe input terminal signals are transferred to the motion monitoring functions.
Which TM54F connection is affected by F35040?
Read the fault value in r0949 as binary: bit 0 set means undervoltage at connection X524, bit 1 set means undervoltage at connection X514.
How do I clear fault F35040?
Check the 24 V DC power supply for the TM54F, then carry out the safe acknowledgment via p10006. The fault must be acknowledged immediately once the supply is healthy again.
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 F35xxx group · SINAMICS manuals · Siemens manuals