Hi, we are having a problem with an AC Coupled Fronius Eco inverter.
The victron is set to Shift the frequency from 50.3Hz to 52.3 to regulate from full power to lowest power (125W) and at 52.5Ht the fronius will disconnect.
These values are set in the Multiplus II’s as well as the Fronius Eco.
The problem is that after regulating to 52.3Hz, the victron lets the battery get charged further and further from the 125W from the fronius. We have set the voltage to be 54.4V, at which the victron starts shifting the frequency, but then the battery slowly gets charged to 56V before the Frequency is set to 52.5Hz to disconnect the AC inverter.
Fronius has the degrading curves etc publicly listed on multiple documents, Victron on the other hand provides no useful information at all and even blocks cooperating with fronius on that topic
Does someone have these informations and could share them? The way the victron handles frequency shifting from the starting frequency to the shutdown?