Yes. But I'm still undecided. The problem is that the only possibly-useful "external control over LVD" I can find consists in sending a command to the inverter to raise the voltage at which it switches from battery to AC input. But there are two problems with this:offgridQLD wrote:Are you thinking now of just having some kind external control over LVD and just leaving the battery V readings/setpoints inside the inverter as is?
1. The maximum value we can set it to is 51 volts and it's possible that a single low-capacity cell could be in trouble at a battery voltage higher than this.
2. It's not clear from the manual whether it will ever switch the loads to the AC input when there is no AC voltage there, even when its source priority is set to "SBU" (Solar, then Battery, then Utility).
Mine is still in pieces, and I don't really want to put it back together until I've made a decision about voltage scaling. Is it easy for you to give yours a battery voltage less than 51 volts and no AC input, set parameter 01 to "SbU", run some load, then set parameter 12 to "51" and tell me if the load goes off?
Those are reasonable fears, that I share.When you first mentioned making changes in the inverter. My initial reaction was. Once you started fooling one reading in the inverter it could be a snow ball/ knock on effect where all other voltage dependent set points would need compensating one way or another. Perhaps adding work/complexity to achieve the initial simple task LVD.
In referring to this as "LVD" (low voltage disconnect?) you may be missing what I said earlier, that I don't want to disconnect the battery at this point (which would be easy enough to do with a contactor). I only want to disconnect (or turn off) the inverter-proper which is a load, not the MPPT or AC input which are charge sources.Or am I lost where you going with this or the initial reason for the tweak?