Hi,
I'm starting to design a system for a camper I am building. I am looking into using the Multiplus 24/1200/25 with a Lithium Ion (NMC) battery and I have a lot of questions.
1) For the software, looking at the voltage range the inverter should work with the battery (with a BMS of course). I would rather not have the BMS do the load switching except in extreme conditions, or double failures. It seems like these systems have a lot of configurations but I just want to make sure that things like under voltage shutoff, and charge voltages are all configurable as it isnt clear in the data sheet which settings are configurable. Also I have seen some reference to needing a password to change some of the settings, is this this case?
2) The data sheet says there is a "battery temperature sensor", can this be used to disable charging when the battery temperature is too low? My BMS has this ability, but again I would rather have the inverter switching the load. My BMS will allow charge current between 0C and 45C, so I would like the inverter to only allow charge between 5C and 40C.
3) Finally a common problem I have seen when integrating lithium batteries with inverters in the inrush current welding the contractor on the BMS or damaging the FETs, do these inverter chargers have any pre-charge circuit, or other way to limit the inrush current?
P.S. Is there a programmable shutoff voltage for the Orion 24/12-70? If not can I use the remote on/off with the inverter/charger?