What it means
F35805 reports an EEPROM checksum error in a Terminal Module (TM): the internal parameter data of the component is corrupted. Depending on how the drive is configured, the same condition can also be issued as an alarm (A) or with no reaction (N) instead of a fault.
Why it appears
- The internal parameter data in the Terminal Module is corrupted.
What to check
- Check whether the permissible ambient temperature for the component is maintained.
- Replace the Terminal Module 31 (TM31).
Reading the message value
- The drive stores the alarm value in r2124; interpret it hexadecimal.
- 01: EEPROM access error.
- 02: Too many blocks in the EEPROM.
Parameters the manual names
- r2124 — alarm value: read it here, interpreted hexadecimal, to see whether the Terminal Module reports an EEPROM access error (01) or too many blocks in the EEPROM (02).
Acknowledging and restarting
Acknowledge the message immediately by switching the power supply off and on (POWER ON). The condition itself triggers no automatic response from the drive, and this power cycle is all that the alarm (A) and no-reaction (N) variants call for as well — neither involves a separate acknowledgment.
The same on every family
Every manual that describes F35805 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 3233 |
| G130, G150 | NONE | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1896 |
The drives this code lives on
F35805 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 F35805 mean on a SINAMICS drive?
It reports an EEPROM checksum error in a Terminal Module (TM): the internal parameter data of the component is corrupted.
How do I clear fault F35805?
Switch the power supply off and on (POWER ON) to acknowledge it immediately. The drive triggers no automatic reaction for this condition.
How do I fix F35805?
Check whether the permissible ambient temperature for the component is maintained, and replace the Terminal Module 31 (TM31).
What is the alarm value of F35805?
Read r2124 and interpret it hexadecimal: 01 means an EEPROM access error, 02 means too many blocks in the EEPROM.
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