Good afternoon. There is a problem that I have not been able to solve for two weeks. I have a powerflex 753 at my factory, which is responsible for dust removal. For some time it worked properly and at some point it started to give error 17. First of all, of course, I checked the input voltage by putting the recorders, but I didn't get any results. There are drawdowns, but they are insignificant-only 5v. The doiver itself ensures the operation of the 139A 380V 1480RPM motor, while during a stop the frequency converter continues to work by turning the motor at low rpm. The next step I took was to replace the driver itself, but it didn't help me. I think there are noises on the input line. But in this case, I think the recorders would show me a voltage drawdown. Advice from AB doesn't help me. Can there be any suggestions