What it means
F07808 is raised when the HF Damping Module does not return its ready signal — either at the moment the drive is switched on or while the drive remains in the switched-on state. Depending on the drive's configuration, the same condition can also be issued as an alarm (A); as an alarm it triggers no automatic reaction and requires no acknowledgment.
Why it appears
- The HF Damping Module does not return a ready signal when the drive is switched on or while it is in the switched-on state.
What to check
- Check the DRIVE-CLiQ wiring to the HF Damping Module.
- Check the 24 V supply voltage.
- If required, replace the HF Damping Module.
Reading the message value
- The drive stores the fault value in r0949; interpret it hexadecimal.
- 1: fault at switch-on identified.
- 2: fault during operation identified.
Parameters the manual names
- r0949 — read the fault value here to tell whether the HF Damping Module's ready signal was already missing at switch-on (value 1) or only during operation (value 2).
Acknowledging and restarting
Once the cause has been removed, acknowledge the fault immediately; the drive will only resume operation after acknowledgment. When the drive is configured to issue this condition as an alarm instead, no acknowledgment is required.
What differs between the drive families
Straight from the manuals' own fields — F07808 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 (NONE, OFF1, OFF3) | — | Power electronics faulted (5) | None | SINAMICS S120, S150 List Manual · p. 2864 |
| G130, G150 | OFF2 (NONE, OFF1, OFF3) | IMMEDIATELY | Power electronics faulted (5) | None | SINAMICS G130, G150 List Manual · p. 1596 |
The drives this code lives on
F07808 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 F07808 mean on a SINAMICS drive?
It means the HF Damping Module does not return a ready signal, either when the drive is switched on or while it is in the switched-on state.
How do I fix F07808?
Check the DRIVE-CLiQ wiring to the HF Damping Module and the 24 V supply voltage; if required, replace the HF Damping Module. Then acknowledge the fault immediately.
What do fault values 1 and 2 of F07808 in r0949 mean?
Interpreted hexadecimal, 1 means the fault was identified at switch-on and 2 means it was identified during operation.
Can F07808 also appear as an alarm?
Yes — depending on the drive's configuration the same condition can be issued as an alarm (A), in which case it causes no automatic reaction and requires no acknowledgment.
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 F07xxx group · SINAMICS manuals · Siemens manuals