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OVERCURRENT Fault on Morning Star MPPT 60

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  • OVERCURRENT Fault on Morning Star MPPT 60

    Dear Sir,
    My system configuration is 3200 Watts X 3 sets of solar panels, each is connected to Morning Star MPPT 60. And are connected to a single battery bank 200Ah x 4 batteries at 48VDC configurations.

    For last three days I have observed that OVERCURRENT Fault is logged in the table of each MPPT.

    Please advise, How can I get rid of this fault.

    Best regards

  • #2
    You have 180 amps charging a 200 amp hour battery?
    2.2kw Suntech mono, Classic 200, NEW Trace SW4024

    Comment


    • #3
      Are you looking at the MPPT-60 web page showing the logging ?
      That one fault code is poorly worded. It's a multi purpose for any fault, I see it often with my 3kw array on a 48v system too. Usually, on partly cloudy days, as sun pops out behind thick clouds, it can easily peak limit the amps for a minute till the panels warm back up.
      Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
      || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
      || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

      solar: http://tinyurl.com/LMR-Solar
      gen: http://tinyurl.com/LMR-Lister

      Comment


      • #4
        My battery bank is 12v200Ah x4 batteries connected in series to make 48VDC.

        Yes, I am checking the log on web page.

        Is this serious matter? If so please help me to sort this out.

        Best Regards

        Comment


        • #5
          Why do you have almost 10,000 watts charging such a small battery? I'm surprised you haven't blown the tops right off the batteries.
          2.2kw Suntech mono, Classic 200, NEW Trace SW4024

          Comment


          • #6
            Dear Sir,
            My problem is we have loads on day time, but in night time we only have a load of approximately 300 watts.

            We need more power during day time.

            Waiting for the kind reply

            Best Regards

            Comment


            • #7
              Send a screen shot of the log page, I'll be able to tell if it's really bad or whatever
              see my attached screenshot. It's the current limit peaking, as clouds come and go.
              I will agree with littleharbor, your battery can be seriously damaged by high charging current. How long has this system been in operation ?





              HighArrayVoltageCurrentLimit.jpg
              Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
              || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
              || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

              solar: http://tinyurl.com/LMR-Solar
              gen: http://tinyurl.com/LMR-Lister

              Comment


              • #8
                Attached please find the screen shots.
                Yes for last few days it's cloudy weather here.

                Best Regards

                Comment


                • #9
                  Dear Sir,
                  All of these are over current faults.

                  Comment


                  • #10
                    None of your pics came through.

                    If you look at my screen shot, the Max Watts is right at the 3,000w zone, array voltage is way below max 150V. As clouds come and go, the panels cool and then when brightly illuminated, can exceed their nominal rating till they warm up
                    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
                    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
                    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

                    solar: http://tinyurl.com/LMR-Solar
                    gen: http://tinyurl.com/LMR-Lister

                    Comment


                    • #11
                      320 Watt panels * 10 in series ?

                      * 3 parallel ?



                      270+ Watt solar panels currently have around 9 A Isc * 30 Voc ...


                      The Impp might get reduced , and therefore this message gets printed
                      to the logfile .

                      ​​​​​​​Software-problem to print better "non-standard" conditions .

                      Comment

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