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richard-1 asked

Issue with multiple MPPT controllers working together (or not)

I have a 14kWh LiFePo4 battery,(offgrid) with BMS managing a Victron Multiplus, Cerbo GX, 2 x MPPT 150 controllers - One BlueSolar and one SmartSolar. My MPPTs strategically manage a solar array that catches morning sun (BlueSolar) and a solar array that catches afternoon sun (SmartSolar).

See Screen shots:383211470-875278797577315-6619112143156937372-n.jpgSmartSolar.

384300307-3162464737389364-2725876610653211387-n.jpg

BlueSolar

384329165-3477045622625961-7988658067457349273-n.jpg

Dashboard

The problem is that once SOC reaches 100%, SmartSolar (279) stops collecting solar for the rest of the day. This is problematic because I cannot get any solar in the afternoon.

Someone recommended setting the Absorbtion point lower on the BlueSolar (278) so that it would stop collecting before SmartSolar, meaning that SmartSolar should keep collecting all afternoon.

But this has not fixed the problem.

Any other ideas?

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nickdb answered ·
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Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

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