ET340 connected to Multiplus II GX 5000 to control ESS. Battery 4 Pylontech US3000C batteries BMS active (Pylontech BMS on can bus)
AC connected to ACin only.
The system works correctly in ESS mode as long as PV input is low. As soon as PV production is in excess of ?2000W?, the ET340 drops repeatedly connection. So the ESS-system first reports 'external control' and is charging the batteries, then goes to passthru, (and reports discharge for 10 seconds, and then ET340 reconnects and the cycle repeats
In DVCC I limited charge current to 50A.
How to remedy the connection drop of the ET340 and get proper ESS control?
Thanks in advance