Black screen on MNGP after update

[offgridQLD]

Yes I have 3 arrays now one new array is just temporarily hooked up this last few days to one classic. Though I swapped it over to  another inverter/charge controller combo unit  that it was intended for this afternoon . It just runs a big Air conditioner and a electric car charger.

The other two  arrays that are usually on the classics are about 70ish volts 4000w on the house and the other array on the shed is about the same voltage and 4200w.

8200w total between the two classics  + (2500w for the air con/ electric car charger system).

you can see most of the shed system and the house system in this pic. 3rd array is now on the lower section of the house deck roof.


That blue box has two 200A contactors and some electronics in it. It  has ALL PV in and ALL load out and a tiny thin wire that connects via a one wire loop to all the little cell level BMS boards on each of my 16 lifepo4 lithium cells. If any cell reads high voltage, low voltage or temp alarm it will connection the load or charge interdependently depending on the alarm. It also has a little display on the front volts, SOC and a shunt inside  but I don't really use the display.



The classic and WBJ are where I take my readings.

[dgd]

Thats a really nice PV setup, the shed array pointing north and the house array west?, that should even out the power available through the day.
So is that a commercially available BMS system, the Epower box and the cell monitor boards on each cell?
Have you found it necessary and has it actually detected low/high cells and adjusted the charging?
(its not the cell monitoring system RossW was designing/building in 2014?)

I have sixteen LifeYPO4 300Ah cells that I will soon press into service once my Oz 6Kw Inverter nears completion, I was not planning on a BMS but just going with an initial bottom balance then regular voltage checks on each cell.

My RE system will be about half the capacity you have, 4.2Kw total PV using 2 Classics (which will run cool with only 2.1Kw PV each), plus a 2Kw turbine on a Classic 250.
Fortunately I have not found it necessary to air-con my power room despite summer 30c temperatures outside.

dgd

[offgridQLD]

House array is facing NE and shed Array is facing NW.

my cells are 400ah lifepo4 is more than enough (I don't use a lot overnight) Typicaly 50 - 100ah overnight.

The BMS is just for safety. I don't let my cells get anywhere near the upper and lower limits so no it hasn't triggered. Though its good to know if I did have a runaway I have a backup or save you killing a cell if something went adrift.

The cells boards are also bypass shunts that can be used to balance the cells at cell level. Though I don't use the balancing feature. About every 3 months take the cells up a little in voltage and manually balanced with a cell level charger.

Edit:
I should mention the BMS and cell boards can't adjust anything to do with charge/discharge. they just activate the contactors on alarm trigger high low voltage. (basicaly a cell level high low voltage auto kill switch) but they are extreme high low that are never reached in normal operation.

Balancing its typically a tiny amount to get them within 15mv or so . (perhaps 800mah top up on a cell or two that behind the others) You could more or less go the year without it but I like the health check every 1/4  just to keep tabs on things and take just a few min to top up.

Yes the unit is a prebuilt box and the cell boards are from  Rod at EV power in Perth WA. Same place the batterys were purchased from.


You will love the lithiums. The voltage is so stiff and they are so efficient at taking a charge. 98.5% is wht I have my WBJR set at for efficiency! I feel kind of guilty angle grinding and welding on so - so PV days when I can her the other systems on our street with generators running topping up lead acid banks. The joy of knowing that a lifpepo4 bank sitting at 50% SOC is a happy bank (it will take you a while to get the lead acid thinking out of your head) but once you do not having to worry about SOC bellow full works hand in hand with offgrid/PV unlike lead that want to be full all the time. Then any small break in the clouds and they just suck up everything you can give them until they are almost full. amazing what you can recover in a short time.

The main reason I have extra PV is we charge a electric car that can take 16kwh or so to fill  up.

[Resthome]

Kurt, Good to see you are back up and were successful installing the MNGP firmware.

Sound like Midnite has some unfinished work with the Win10 firmware loader. I really hope Midnite takes this beta time to resolve the issues with this new Win10 Loader. The issue you had is particularly a problem since the code they are providing said it completed successfully when that wasn't the case and left you with an unusable MNGP. Seems like there should be some kind of chksum to insure it did install correctly.

I wish there was a tally of how many have updated with or without a problem with the new Windows10 installer. There hasn't been a lot of feedback on the forum.

[russ_drinkwater]

Kurt if you are still coming up here at easter time I think we will not do the upgrade on my classics! ( A joke mate, ok?)
I finally got all the pieces for the whiz bang jnr and the telco cable for the follow me.
Dominated by/with cattle work at the moment. Cutting, branding and buffalo fly management.
Good to see you have the classic sorted mate.

[offgridQLD]

Yes Russ that's the plan for Easter. Will bring the teardrop camper (bug out camper I built  so not to impose to much. Will need to talk to you in more detail about the job so we make sure we have everything on hand to get the split system  finished and tested without overlooking anything as it's a long round trip If I forget something 

I'm happy to bring the Old laptop with me and update your classics...seriously (It's a 5 min job and will work 100% with the windows XP laptop) All the black screen trouble I had was just because I used a windows 10 laptop the 1st time.

I have the US style phone plugs and cable and crimp tool if you need some for follow me. I just made them up to length

Ps, if Easter is to short time to purchase the split system I can push it out to a later date if you like just let me know.

Kurt