Dear Community,
i am trying to narrow down an issue with my ESS, using an EasySolar II GX 48/5000/70-50 (wth the MPPT 250/100 inside) on L1, and a new PV array. I have seen a similar issue reported here but OP never came back with a response: https://community.victronenergy.com/questions/77928/smart-solar-mppt-25085-cycling-pv-to-0-after-154-u.html?sort=votes
Some context:
The specifications of the PV are well within the maximum capacity of the solar charger and there are no errors reported anywhere, but during high sun intensity, the MPPT keeps cycling from off -> wakeup -> external control, sometimes staying in off for tens of minutes.
Grid feed-in is set to 4400W, there are no charge or other limits set anywhere, except a 25A grid limit.
This behavior reproduces every day when the sun is hitting the panels at good intensity, the example below is from yesterday (cloudy).
It looks like this in the vrm:
the corresponding console daily history shows we were below 100A and didn't exceed the maximum nominal PV Power:
The batteries were in the low 10s%:
In some cases later, this issue is followed by an overload warning on L1, but i assume this may be due to a spike in feed-in or battery use, to compensate the loss 3-4kW of solar. Here is the full picture (hopefully readable). Not all such instances are followed by overload warnings - can it be the case that VRM does not show these?
We are planning to setup another array like that in a month and any help narrowing down this issue would be appreciated! I have the second MPPT 250/100 already and am planning to test with that one later as well.
Thank you in advance