australsolarier wrote:A) the timers, if timing more than one year, it lets you program alright, but then does not follow instructions. and no greying out or anything. so you cannot program say from 1.1.16 to 4.4.17. it quite happily lets you set the those dates.
Yes that's true it does but it will not work as I said it more than 12months (16 months) and therefore it cannot repeat it the following year and so on, it will fail every time.
Priorities are specifically designed to recycle and operate/repeat EVERY day, month, year, ie on 1.1.anything it can turn a relay that does XX things and only that day each will it do it each year. 16 months simply can't be repeated in fact it's a wrap around so it's an utterly illogical configuration. It might use dates but it's only so it may start priority in the future upto a year minus one day.
What is it you are trying to achieve exactly, that has a need for 16 months?
australsolarier wrote:B) under the configuration/system/ multiple charging tab if you enable "multiple chargers" (more than one selectronic sp pro) then, what what what what!!!!!!! you might think as you have only ONE selectronic inverter this has no consequence. but as it turned out, when multiple chargers are enabled the selectronic then does not grid feed. and under the solar hybrid control tab no graying or anything lets you know it is disabled.
What that setting does (not documented) is stop the SP-Pro from FORCING the voltage to drop to the lower voltage such as from absorption to float. If the LiFePO4 cells are not fully charged then they will continue to take charge until they're REALLY charged at which point the system drift rather than force it to the lower voltage and should start to export, it depends on what the Midnite is doing also. Your choice of which way it's set but that's the way, I've done a number of packs and they ALL export but ONLY when the cells are REALLY charged.
[/quote]australsolarier wrote:i myself did not click that enabling of multiple chargers. it was done either inadvertently or deliberately
Deliberately, explanation above. It's not nice to make out it was done for anything other than good reasons. If you'd asked I could have told you, as you know I had to go. I'd wasted more than enough time attempting to explain why wiring should be done precisely according to Selectronics documentation so did not get to that setting or others.
Selectonic installation documentation state clearly and I quote.
"DC Shunts MUST be installed into the battery negative lead. Ensure that the shunt ONLY measures the renewable or other DC load current and not any current feeding to or from the inverter." The inverter it is talking about is the SP-PRO.
The point being that you DO NOT CONNECT THE NEGATIVE BATTERY CABLE OF THE SP-PRO to the shunt it is monitoring it throws out a bunch on internal variables including kWh's or A.H's and internal dynamic calulations. If you feel you must monitor via both the SP-Pro and the MIDNITE, then you need to add yet another shunt connected between the MIDNITE and the batteries that the SP-PRO is not connected to and it should monitor that shunt ONLY. That is the ONLY way of having both the SP-PRO and the MIDNITE monitoring the SOC on both devices accurately.
