When setting up an AC coupled system with a Fronius PV inverter, the instructions state that the default Victron configuration is the correct one. However, I have found conflicting defaults and self contradicting documentation, so would like to clear the air on this and get a definitive answer on the correct settings.
On the Victron website there is a guide for setting up a Fronius inverter: https://www.victronenergy.com/live/ac_coupling:fronius#setting_up_the_victron_multi_or_quattro . This mentions that it is not necessary to change the defaults, and shows a screenshot of the settings and also a table:
However, as can be seen above, the setting for 50Hz are inconsistent between the picture and the table, with different start frequencies.
When configuring the system, I have tried both the ESS assistant and the PV Inverter assistant, and noticed they both have different defaults:
So when we are told that the defaults are fine, and there are different defaults depending on the assistant, and the documentation contradicts itself, it can be a bit confusing.
For what its worth, I believe the defaults in the PV Inverter assistant are correct (51Hz start) based on my discussions with Fronius, but I just want to check this with Victron and draw attention to it so that the assistant defaults and documentation can be updated.