"AC Coupled PV - feed-in excess" set to "OFF", does not change AC Out frequency for PV inverter when on-grid.
I have a PV inverter coupled on AC OUT 1, and the AC frequency shift works well when not connected to the grid.
But when connected to grid, the AC OUT frequency does not function as expected to throttle down the PV inverter to prevent feed-in excess to grid - it incorrectly keeps the AC OUT frequency unchanged at 50Hz and the excess PV power is (unwanted) fed back into the grid, even with "AC Coupled PV - feed-in excess" set to "OFF" in the ESS setup in the Cerbo GX. I also tried "AC Coupled PV - feed-in excess" set to "ON" with "Limit system feed-in" to "ON", but with "Maximum feed-in" set to "0W" - but excess PV power still get fed back into the grid since AC OUT frequency does not change to throttle down the PV Inverter, when connected to grid.
(Again, when not connected to grid, frequency control works perfect. Only when connected to grid, I cannot get the system to NOT feed in excess PV into grid.)
It is like "AC Coupled PV - feed-in excess" set to "OFF" is not respected at all.
Any ideas out there perhaps? Or what am I missing here?