Wickus Posted June 28, 2020 Share Posted June 28, 2020 Good day I have a RCT-AXMK2-5K-48V inverter with 2 x B3 Dyness (3.5kWh - 37A) Lithium Batteries and 6 x CNBM 6P 330W Polycrystalline Silicone Solar Panels (wired up in 2 x 3 panels) Solar System. My inverter settings are as follow: 01 - SBU 02 - 70A 03 - APL 04 - SdS 05 - USE 06 - L?E 07 - t?E 08 - 230V 09 - 50Hz 11 - 30A 12 - 48V 13 - 51V 16 - SNU 18 - bON 19 -?EP 20 - LON 22 - AON 23 - byE 25 - FEN 26 - 51.8V 27 - 50.3V 28 - PAL 29 - 46.0V 30 - ONE 31 - SbE 32 - 30 33 - EdS 34 - 53.2V 35 - 60 36 - 120 37 - 30d 39 - AdS I am new to Solar and do not really understand all the nitty gritty of Solar. Can you please tell me if the settings in my Axpert Inverter are correct? My system was installed a few weeks ago. A week ago I noticed a red light on my bottom battery (Secondary) I then switched off the Eskom power to inverter as welk as Solar panels so that everything is running off battery power only. Everything went fine and the red light turned off on battery, but I got an error 04 when I switched on some extra items like kettle... I then changed setting nr 29 to 46V which stopped the alarm. Then, after a while (Battery Voltage at 48 V on Inverter LCD Panel), I switched on the Panels as well as Eskom to the inverter. At first it stayed in Bypass Mode, then after a while, the bypass mode was off. Then after a while, I started to get an error Code 04 with usage at 75% Any help will be appreciated very much Quote Link to comment Share on other sites More sharing options...
Coulomb Posted June 29, 2020 Share Posted June 29, 2020 On 2020/06/28 at 8:51 PM, Wickus said: I have a RCT-AXMK2-5K-48V inverter with 2 x B3 Dyness (3.5kWh - 37A) Lithium Batteries and 6 x CNBM 6P 330W Polycrystalline Silicone Solar Panels (wired up in 2 x 3 panels) That's a model with a 450 V max SCC, right? 120 V min MPPT voltage. So you'd want all 6 panels in series. Unless I misunderstand your wording, that could be the basis of frequent battery low (code 04) warnings. 6 x 330 W = 1980 W nominal is pretty light for a 5 kW inverter; they like about twice that number. Your other settings look OK. Quote Link to comment Share on other sites More sharing options...
Wickus Posted July 1, 2020 Author Share Posted July 1, 2020 On 2020/06/29 at 1:03 PM, Coulomb said: That's a model with a 450 V max SCC, right? 120 V min MPPT voltage. So you'd want all 6 panels in series. Unless I misunderstand your wording, that could be the basis of frequent battery low (code 04) warnings. 6 x 330 W = 1980 W nominal is pretty light for a 5 kW inverter; they like about twice that number. Your other settings look OK. Hi Coulomb Thanx a lot for the reply. Yes, you are right. It is the model with a 450 V max SCC and120 V min MPPT voltage. So, you suggest that I must connect all 6 panels in Serie? They are currently connected in 2 pairs (3 in serie ) The installer wanted to install it in 3 sets of 2 panels, but when we saw the minimum of 120Volt, we changed our minds to 2 sets of 3 panels. Quote Link to comment Share on other sites More sharing options...
Coulomb Posted July 2, 2020 Share Posted July 2, 2020 8 hours ago, Wickus said: So, you suggest that I must connect all 6 panels in Series? Yes, 6S is ideal for this model. 2S3P would be ideal (assuming that they are 72-cell panels) for a 145 V max model. Quote Link to comment Share on other sites More sharing options...
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