F30801 fault in siemens 6RA80 DC Drive indicate Sign-of-life missing. This means a DRIVE-CLiQ communication error has occurred from the Control Unit to the power unit concerned. The computing time load might be too high.

1. Check the electrical cabinet design and cable routing for EMC compliance
2. Remove DRIVE-CLiQ components that are not required.
3. De-select functions that are not required.
4. If required, increase the sampling times (p0112, p0115).
5. Replace the component involved.