I discovered a big problem on my ESS system ( Multiplus II, SmartShunt 500A, SmartSolar MPPT VE.Can 150/100, Cerbo GX V3.30 ).
My ESS is configured as two-signal BMS and correct connected to my battery BMS with 2 different free contact ( one for over voltage cell [OV] , and one for under voltage cell [UV] ).
In order to investigate to a over voltage cell occurred recently, i have make a test to understand what appen when a OV contact goes open.
..I see in this case the ESS status goes correctly to "ESS3 disable charger" BUT che battery charging dont stop.
In my opinion when the BMS OV relay open the signal sent to Multiplus II, the SOC have to swith to 100% and stop charging the battery.
I tryed to upgrade some device ( Cerbo from 3.10 Large to 3.30 Large, Multiplus from V497 to V508, MK3 ..) without fixing the problem.
Thaks in advance,
Fabrizio.