What it means
F03500 carries the title TM: Initialization: an internal software error occurred while the drive was initializing the Terminal Modules — the terminals of the Control Unit or of the Terminal Board 30. Depending on the drive's configuration, the same condition can also be signalled as an alarm (A); in that form the manual specifies no reaction and no acknowledgement.
Why it appears
- An internal software error occurred while the Terminal Modules — the terminals of the Control Unit or of the Terminal Board 30 — were being initialized.
What to check
- Switch the power supply for the Control Unit off and back on.
- Check the DRIVE-CLiQ connection.
- If required, replace the Terminal Module; it should be connected directly to a DRIVE-CLiQ socket of the Control Unit.
- If the fault occurs again, replace the Terminal Module.
Reading the message value
The message value shown with the code is the fault value stored in r0949; it must be interpreted as a decimal number and has the form yxxx:
- y — only for internal Siemens troubleshooting.
- xxx — component number (p0151).
Parameters the manual names
- r0949 — fault value: holds the value of F03500; read it as a decimal number in the yxxx form described above.
- p0151 — component number (VSM comp_no): the xxx digits of the fault value are this component number, so reading p0151 identifies the component concerned.
Acknowledging and restarting
F03500 is acknowledged immediately; a POWER ON — switching the power supply off and on again — also clears it. Because the manual's first remedy step is exactly that power cycle of the Control Unit supply, one off/on cycle both acknowledges the fault and applies the remedy. If the Terminal Module had to be replaced, acknowledge the fault the same way afterwards and the drive can then be restarted.
The same on every family
Every manual that describes F03500 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | OFF1 (OFF2) | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1512 |
| S120, S150 | OFF1 (OFF2) | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 2738 |
The drives this code lives on
F03500 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 F03500 mean on a SINAMICS drive?
It reports an internal software error that occurred while the drive initialized the Terminal Modules — the terminals of the Control Unit or of the Terminal Board 30.
How do I clear fault F03500?
Switch the power supply for the Control Unit off and back on, then check the DRIVE-CLiQ connection. If the fault comes back, replace the Terminal Module and connect it directly to a DRIVE-CLiQ socket of the Control Unit.
What is the fault value of F03500?
It is held in r0949 and read as a decimal number in the form yxxx: xxx is the component number (p0151), while y is reserved for internal Siemens troubleshooting.
Does F03500 have to be acknowledged?
Yes — immediately, or by a POWER ON. Power-cycling the Control Unit supply is also the manual's first remedy step, so one off/on cycle does both. When the condition appears only as an alarm, no acknowledgement is needed.
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 F03xxx group · SINAMICS manuals · Siemens manuals