Offgrid, Multiplus 48/5000, 225Ah fla batts, CCGX, 150/100 mppt. 2x generators, both with the same issue, see screenpic..
This shows the Multi charging/controlling to Absorb V. There's 2 sections, the first with a Yamaha 6kVA, the second with a Scorpion 2.2kVA. My problem is that the V is varying over ~2V and the Amps ~4A. Target V today is ~58.6V (Temp Comp, cold batts), but the Multi never actually registered Abs, it stayed in Bulk. The mppt, set 0.1V higher than than the Multi, actually found Abs from the V spikes and locked in, though only producing ~100W in foul cloud.
I can settle it down using 'Weak AC', but this comes with other issues. Recently was able to remove that when I found a hot ac cable joint and repaired it. Dynamic Current Limiter checked (I need that), and Input Limit varied to suit the gensets. The rest I can't seem to be able to post, but I'll try to add in a comment.
Can anyone point me at a possible reason or cure for this? I'm running out of ideas.. Cheers..