JeanPhi90

Hi all. I have problems running two SPF 5000TL HVM-WPV in parallel mode (with a stack of 2 US200 and 1 US200C). First inverter I bought without the parallel interface, and added it later when I bought the second one. First inverter is labelled "SPF 5000TL HVM-WPV", second "SPF 5000TL HVM-WPV-P", I suppose the "P" at the end just means it was factory built with the parallel interface. 1st inverter is running on 008.003/009.03/null softwares without problem in solo mode (even with the parallel board installed). It is running my setup alone for now. 2nd inverter is running on 048.02/049.02/null softwares, and there is a 1st issue with BMS communication, nether been able to have it communicate with the pylontech batteries. I tested it with the cables and also the BMS board from the 1st inverter, without success. I asked Growatt for some help but didn't had any answer. And secondly, if I try running the setup without BMS communication (setting the 2 in inverters in User battery mode), when all is configured in parallel mode, without error on any of the inverters, I can't have the inverters outputing anything, the outputs nether activates. I am considering upgrading the 2 inverters to the same firmware, but am not sure that the firmwares included in SiliconKid's package woud be ok, and wouldn't want to end with none of my inverters running... Anyone know how to ensure version compatibilty in such a case, or have clues about the problems I encouter? Thank's for any help!

A big thank for this informations! If I may ask a question, as I try to run a setup with presently 2 US2000 and 1 US200C, linked to Growatt inverter(s), but I have an issue with my 2nd inverter, it doesn't communicate with BMS, and thus I can't include it in my setup. This issue I try to solve with Growatt, but it may take some time, and I woud like to run the setup without BMS communication on both inverters, wich needs to set correct voltages in the inverters: Charge voltage, float voltage and low DC cut-off. Do you think that 53.2V for charge voltage, 52.5V for Float and 44,5V for low DC cut off are correct values for my 3 Pylontech stack?