April 8, 20215 yr should change my setup of panels to get more amps in Limpopo . we use 300W in evening and sometimes we run out early morning - I am thing panels are not Charing battery to full thus it shows full 50.4V - should get firmware upgrade Setup 3 P X 4 series panels 270w 30V 8.68Amp Battery Oliter 200AH X8 Below inverter settings 1 sbu 2 40A 3 ups 4 sds 5 use 6 lfe 7efe 8 50hz 9 uti 60 ( no Eskom only generator but thus want charge with it ) 12 44V 13 Full 16 c50 18 60A 19 Hep 20 LoF 22 aon 23 byb 25 fen 26 57.8 27 55.5 28 pal only have one inverter 29 43v 30 one 31sbe 32 600 33 EEN 34 57.4 35 60 37 30D 38 Nec DLS 39 ADS
April 8, 20215 yr On 2021/04/08 at 10:15 PM, wehanvdw said: we use 300W in evening and sometimes we run out early morning That doesn't sound good for your battery. [ Edit: What I meant to say was, with such a light load and the battery not lasting till morning, it's either not charging fully, or has low capacity. ] Quote - I am thing panels are not Charing battery to full thus it shows full 50.4V It that's after the battery has finished charging, that's OK, depending on loads and many other factors. If it's the highest voltage the battery gets to while charging, that's way too low. Quote - should get firmware upgrade What main firmware (U1 data page) are you on now? Quote Setup 3 P X 4 series panels 270w 30V 8.68Amp I assume you mean 3S4P: three panels in series per string, and four such strings in parallel. Quote Battery Oliter 200AH X8 I assume they're lead acid. Sealed? Quote Below inverter settings 2 40A This is very low. Usually, you can charge lead acid to 0.15C; AGM to 0.2C. 0.15C for you would be 0.15 x 400 = 60 A. Quote 12 44V This is way too low. I would use 48V. Yes, it's less runtime, but if you have enough battery (and you did), it's best to run them down to only about 50% depth of discharge. 44 V is nearly dead flat. Quote 26 57.8 That's an unusual figure, 14.45 V per 12 V module. Is that what is recommended by the battery manufacturer? Usually, you charge flooded lead acid to 14.6 V per module, and sealed lead acid to something like 14.1 V per module. Quote 28 pal only have one inverter You should try to fix that so that it selected as SnG (single). Strange things happen. See FAQ #3. Quote 29 43v Sorry to be the bearer of bad news, but that setting has likely killed your battery. It happens so often, sadly. A setting as low as that is meant for occasional (perhaps once a year) emergencies. But in South Africa with its frequent extended load shedding, it happens way too often. After a handful of deep discharges like that, lead acid is ruined. Sometimes they can be revived a little, usually it's not worth the effort. For regular load shedding, this figure should be up around 48 V (12.0 V per 12 V module). That's hopefully close to 50% state of charge under load. The inverter probably can't set the voltage any higher than that anyway. The other thing that hasn't helped your battery's life is the premature float bug in every Axpert factory firmware. There is patched firmware for most 145 V max models; see Can I update my firmware, and if so to what? Edited April 15, 20215 yr by Coulomb
April 15, 20215 yr Author good day got modified firmware . 74.40e . now when all of panels are in the sun it shows on the screen 2 panels . will me changing the layout of the panels allow more solar power to come in . I have gel battery sealed . oliter 200AH . will see tonight if battery charged up better .
April 15, 20215 yr 9 minutes ago, wehanvdw said: good day got modified firmware . 74.40e . Ok, that will eliminate the premature float bug. 9 minutes ago, wehanvdw said: now when all of panels are in the sun it shows on the screen 2 panels . If you mean the patched firmware is now showing 2 rows of "cells" in the solar panel icon, that just means you're charging from solar at 2000 W ± 500 W. Just a quick visual indication of gross PV charging power. Quote will me changing the layout of the panels allow more solar power to come in . It depends on what you have now. Your first post said "Setup 3 P X 4 series panels 270w 30V 8.68Amp "; if this is not a typo, it means you have 4 x 30 V = 120 V for the Vmp at 25°C. Open circuit, they will be at least 20% more, or at least 144 V, which is way too close to the absolute never-exceed limit of 145 V. In Winter, they would increase Voc by another 7% or so, which would be at least 154 V, which is likely to cause damage. These are presumably 60-cell panels. 3S4P (4 strings of 3 panels in series) would work much better (and safer). You can expect under very good conditions perhaps about 80% of nominal panel power, which is 2592 W, which would just squeak it into the 3 rows of cells (solar panel icon full).
April 15, 20215 yr Author 1.17KW from 12 the afternoon , max after update it cuts off and uses the battery on full sun as today we use it as off grid also what is tweak for 5.5kva generator so we charge on cloudy days can you please a drawing a diagram of how it will be must be best setup Limpopo and also what angel . running on floor on steel beam till i have roof to put it on .
April 16, 20215 yr 11 hours ago, wehanvdw said: 1.17KW from 12 the afternoon , max That's really low for 3.2 kW nominal of panels. But it sounds like they are mounted temporarily, and in the wrong configuration (you still haven't confirmed that they are wired 4S). 11 hours ago, wehanvdw said: after update it cuts off and uses the battery on full sun as today When you say cuts off, do you mean the PV power is zero? Is the PV icon present, not present, or flashing? 11 hours ago, wehanvdw said: also what is tweak for 5.5kva generator so we charge on cloudy days See FAQ #7.
April 16, 20215 yr Author Please see photo of panel icon and lay out of panels . I have idea that the panels my not connected good so I am gone re connect then with ferrals seams the connector that panels get shipped with is not connecting very good
April 16, 20215 yr Your electrical layout is good; it's 3S 4P. Three panels in series in each string; 4 strings in parallel. For 30 V Vmp panels, this is the best layout. SCC firmware (U2 on your model) version 04.12 is a common version for Axperts, model MKS (not MKS II or MKS III). So it's well tested firmware. Though I don't have a copy to check for glitches and bugs etc.
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