Conext SW4024 - AC Support Performance

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Comments

  • giawagiawa Posts: 19Registered Users ✭✭
    Got it all up and running on a Netduino with ModBus and now I have a cool little LCD screen giving me real-time statistics on the SW performance.  Now I just have to eagerly await my Amazon deliveries >.>

    If you're curious about the hardware, this is a Netduino 2+ with a Gameduino shield attached.  I'm using open-source C# code on the Netduino to interface with the Gameduino shield:  https://github.com/giawa/gameduino4netduino  Communication is over ModBus TCP, and everything is powered off the micro USB cable.

    The plot on the left isn't showing anything interesting yet (I've adapted this display from another project).  I'll probably get that to be able to swap between Solar/Grid/Battery/Load wattage or something.



    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • EstragonEstragon Posts: 2,453Registered Users ✭✭✭✭
    I have nothing to add, but am curious about the hw and look forward to hearing how it turns out. Do share!
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • giawagiawa Posts: 19Registered Users ✭✭
    Hey everyone,

    It will still be a while longer before my double pole relay shows up, but I thought I would upload the most recent copy of my ModBus code in case anyone wants to try it out, or if anyone in the future looks at this thread trying to do something similar.  I now have examples of writing data, and have successfully turned on/off AC Support, set AC Support voltage, etc over ModBus.

    Cheers,

    Giawa

    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • VicVic Posts: 2,900Solar Expert ✭✭✭✭

    Hi Giawa,

    WOW,  that Netduino project looks stunning.   Sure has been a lot of progress in these open-source computing devices.

    You may know,  but,  on the MidNite Solar Forum,  there is a Topic area for a number of the different computing boards.   Here is a Link to the Arduino  Topic.  You might find it or some use,   and bet,  that the Forum would benefit from your input:

    http://midniteftp.com/forum/index.php?board=35.0

    Great work!    Thanks,   Vic

    Off Grid - Two systems -- 4 SW+ 5548 Inverters, Surrette 4KS25 1280 AH [email protected], 11.1 KW STC PV, 4X MidNite Classic 150 w/ WBjrs, Beta KID on S-530s, MX-60s, MN Bkrs/Boxes.  25 KVA Polyphase Kubota diesel,  Honda Eu6500isa,  Eu3000is-es, Eu2000,  Eu1000 gensets.  Thanks Wind-Sun for this great Forum.
  • MrM1MrM1 Posts: 161Registered Users ✭✭
    Great work. Looks cool. Wondering though, when u say disconnect from AC you mean turning off AC support, or did you find a way to internally disconnect AC power. 
    REC TwinPeak 2 285W 3S/3P 2.6kW-STC / 1.9kW-NMOT Array
    MN Solar Classic 150 / 2017 Conext SW 4024 Inverter latest firmware
    Trojan L16H-AC 435Ah bank 4S connected to Inverter with 7' of 4/0 cable / 24 volt system
    Grid-Assist Off-Grid / Need 3200Whs Daily Off-Grid
    System went Online Oct 2017
  • Dave AngeliniDave Angelini Posts: 3,770Solar Expert ✭✭✭✭
    I am wondering the same thing and why you need a CB ?  You should be able to control this with modbus internally.
    "we go where power lines don't" Sierra Mountains near Mariposa/Yosemite CA
     http://members.sti.net/offgridsolar/
    E-mail [email protected]

  • giawagiawa Posts: 19Registered Users ✭✭
    I am wondering the same thing and why you need a CB ?  You should be able to control this with modbus internally.
    Hi Dave,

    Looking through the memory map for the SW in ModBus I couldn't find any way to control the internal switch.  It could be this exists hidden somewhere, but their public documentation doesn't seem to include an ability to disable the AC input and run from the inverter only.  If it is possible (or if you know someone who can point out that register) then that would be super helpful.  There might be a way for me to fake it out as well by changing the AC min/max frequencies or high voltage/etc to have it disconnect the AC input.

    Giawa
    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • giawagiawa Posts: 19Registered Users ✭✭
    MrM1 said:
    Great work. Looks cool. Wondering though, when u say disconnect from AC you mean turning off AC support, or did you find a way to internally disconnect AC power. 
    My thought was to disconnect the AC input from the SW.  This would force the SW to operate in inverter mode only.  I can already easily control AC Support via ModBus (and am actively using this now).

    Giawa
    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • giawagiawa Posts: 19Registered Users ✭✭
    Vic said:

    Hi Giawa,

    WOW,  that Netduino project looks stunning.   Sure has been a lot of progress in these open-source computing devices.

    You may know,  but,  on the MidNite Solar Forum,  there is a Topic area for a number of the different computing boards.   Here is a Link to the Arduino  Topic.  You might find it or some use,   and bet,  that the Forum would benefit from your input:

    http://midniteftp.com/forum/index.php?board=35.0

    Great work!    Thanks,   Vic

    Thanks!  I've been having some fun with it.  I'm hoping I can get some time this weekend to experiment with having the Netduino disconnect the AC input automatically.  I'm already using it to control the AC support voltage, mode and to act as my quick reference and history for load/solar/etc.

    I'll definitely check out that forum - thanks for the link!  Cheers,

    Giawa
    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • MrM1MrM1 Posts: 161Registered Users ✭✭
    Post a link over here if you bounce over to MidNite Solar Forum plz
    REC TwinPeak 2 285W 3S/3P 2.6kW-STC / 1.9kW-NMOT Array
    MN Solar Classic 150 / 2017 Conext SW 4024 Inverter latest firmware
    Trojan L16H-AC 435Ah bank 4S connected to Inverter with 7' of 4/0 cable / 24 volt system
    Grid-Assist Off-Grid / Need 3200Whs Daily Off-Grid
    System went Online Oct 2017
  • Dave AngeliniDave Angelini Posts: 3,770Solar Expert ✭✭✭✭
    There should be a way but I have only done this with XW. The reason I hire my friend is this programming stuff bores the heck out of me ;)
    "we go where power lines don't" Sierra Mountains near Mariposa/Yosemite CA
     http://members.sti.net/offgridsolar/
    E-mail [email protected]

  • giawagiawa Posts: 19Registered Users ✭✭
    There should be a way but I have only done this with XW.
    Ya, it looks like it is available in the XW memory map, but not in the SW.

    Also, the SW forces a range of what it considers to be 'valid' values for the AC high/low voltage and frequency, so you cannot configure these values to be out of range.  I was hoping I could set the AC high voltage to 110V and then have it unqualify the AC input, forcing it into inverter mode, but those Schneider engineers/programmers are just too clever for me.

    Giawa
    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • MrM1MrM1 Posts: 161Registered Users ✭✭
    edited May 26 #44
    Post a link here if you bounce
    giawa said:

    ... those Schneider engineers/programmers are just too clever for me.

    Giawa
    Yes I guess that's one way of looking at it.
    REC TwinPeak 2 285W 3S/3P 2.6kW-STC / 1.9kW-NMOT Array
    MN Solar Classic 150 / 2017 Conext SW 4024 Inverter latest firmware
    Trojan L16H-AC 435Ah bank 4S connected to Inverter with 7' of 4/0 cable / 24 volt system
    Grid-Assist Off-Grid / Need 3200Whs Daily Off-Grid
    System went Online Oct 2017
  • giawagiawa Posts: 19Registered Users ✭✭
    MrM1 said:
    Post a link here if you bounce
    I don't think I'll bounce out of this thread - but I'll definitely be reading up on some of the project that people in the other forum are working on.

    Giawa
    6x Jinko 260W Panels (1.56kW), Conext SW 4024 Inverter, Morningstar ProStar MPPT 40A Charge Controller, 8x 220Ah 6V Flooded GC2 Batteries (4 per string, 2 strings in parallel for 24V 440Ah), MidNite Solar Combiner
  • fasterskifasterski Posts: 13Registered Users ✭✭
    Thanks for the Shneider FAQ link. Now I understand why I could not get it running as per manual. What I did in my case is I used one phase 15 AMPs coming in on a Wink Compatible Smart light module. I can control it remotely when the sun in ablaze (On schedule and override as needed) Found the setup will work for most of the stuff in the house (except central vac and saws). 
  • MrM1MrM1 Posts: 161Registered Users ✭✭
    @giawa, did you ever figure out a way to internally disconnect AC input on the SW?  Or did you get it set up via a relay? 
    REC TwinPeak 2 285W 3S/3P 2.6kW-STC / 1.9kW-NMOT Array
    MN Solar Classic 150 / 2017 Conext SW 4024 Inverter latest firmware
    Trojan L16H-AC 435Ah bank 4S connected to Inverter with 7' of 4/0 cable / 24 volt system
    Grid-Assist Off-Grid / Need 3200Whs Daily Off-Grid
    System went Online Oct 2017
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