Thanks. That's my next step - to isolate each inverter and see if only one is the offending unit. It's an 880ah battery with a desired charge rate of 200A, so ultimately I will need at least two inverters.
I did rig up a 3000W solar array and was able to charge perfectly to my desired setpoint using XW charge controllers. It seems to be a calibration issue in one or multiple inverters, so I may need to resolve the discrepancies between actual and reported battery voltage or just adjust the setpoints to account for the discrepancy (not ideal). On Mon, Mar 25, 2019 at 7:59 PM Dave Angelini Offgrid Solar < offgridso...@sti.net> wrote: > For now I would just use one XW to charge. They are 130A chargers so set > one to the percentage of charge to get the correct amps. Use the master. > Disable the other 3 chargers by deselecting operating. Everything on an XW > is DSP controlled and can be set. Maybe the "schneider lady" here can help. > I did correct a problem like this and I had to use the "config tool" to do > this. I also needed help from engineering and it was a long time ago. > > Good Luck! > > *Dave Angelini Offgrid Solar > "we go where powerlines don't" > http://members.sti.net/offgridsolar/ > <https://mailtrack.io/trace/link/05a171d095f225c14871fd1131d92beb00b09d67?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=4c1ea33a90815ee0> > e-mail offgridso...@sti.net <offgridso...@sti.net> > text 209 813 0060* > > On Mon, 25 Mar 2019 19:23:54 -0400, Jason Szumlanski < > ja...@floridasolardesigngroup.com> wrote: > > Inverter charging from generator input. I have each inverter set to 22A > charge rate and 57.6 for bulk and absorb, no equalization (although the eq > voltage is also set to 57.6V just in case). > > No solar at this time (yet!). > > I do have one other piece of information I just discovered. Two of the > four inverters are reporting the battery voltage about 0.8V lower than the > other two. I think this might be my issue. At rest two of the inverters > show the battery voltage as 53.4V, which is the correct voltage as measured > on my meter and on the battery BMS display. The other two inverters show > 52.8V and 52.7V in the Combox diagnostics. I'm now thinking these two > inverter battery voltage readings are the issue. Is there a way to > calibrate the XW battery voltage readings? I suppose I could disable the > chargers on these inverters, but that is not a permanent solution if that > is found to be the issue. > > Jason > > > On Mon, Mar 25, 2019 at 5:05 PM Darryl Thayer <darylsol...@gmail.com> > wrote: > >> Is the chargingfrom the inverter orfrom a solar source? >> >> On Mon, Mar 25, 2019, 3:35 PM Jason Szumlanski < >> ja...@floridasolardesigngroup.com> wrote: >> >>> I have four inverter/chargers (master and 3 slaves) that are blowing >>> past their 57.6V setpoint that I programmed and confirmed via the Context >>> Combox. They are hitting 58.4V and tripping the battery management units on >>> a set of Lithium Batts. Any ideas why this would happen? 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