Yeah, I think the box for one of the midnight solar charge controllers contained some warning about it causing lumpy oatmeal or something similar... I can't put my hand on the sheet right now, but it was big and obvious and funny.
FYI, I will be releasing a standalone product which will pull the data out of the KID charge controller, and probably a module shortly after. I'm desperately trying to get the (@#$* rackinjector shipping, and after that I have two additional projects waiting to finish up - the standalone charge controller monitor for the midnight solar products, and the medusa card for the rackinjector. On Wed, May 10, 2017 at 9:13 PM, Rob Genovesi <r...@corp.coastside.net> wrote: > Forrest, > > Thanks for this info. That makes sense as to what was happening to us (as > described by Bill Prince). > > The charge controller is a Midnite Solar KID and it has the warning you > mentioned all over the manual (isolate negative in/out). We didnt realize > the site monitor base share a common - > > We hooked the load up to pwr1 and the batteries to pwr2 to try and > diagnose an earlier problem with the battery circuit breaker popping (with > only pwr1 connected to load). As now expected it popped the breaker > immediately. > > We disconnected pwr2 and increased the battery breaker from 20A to 30A > breaker. No further problems since that change. > > -Rob > > > On Wed, May 10, 2017 at 4:27 PM, Forrest Christian (List Account) < > li...@packetflux.com> wrote: > >> On the base unit, the - side of both DC inputs are tied together. It is >> designed that way, since it was designed to be powered from two positive >> sources. >> >> If you are connecting two -48VDC busses to the base unit by connecting >> 'common or return' to the + input on each, and the -48VDC bus to the - >> input on each, the base unit will internally connect both of those buses. >> As I described, this is by design because the unit was designed for + >> voltages, not negative ones. >> >> The next iteration of the base unit will handle this much more >> gracefully. I am not yet sure about whether the device will simply just >> support either +48VDC or -48VDC, or if you'll have to select it in some way >> (at ordering, with a jumper, etc....) >> >> >> >> -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 forre...@imach.com | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
