lucass

what are those limits? Passthrough current is 40A x 230V 9,2kW, can i reach 9,2kW as sum of grid 3,2kW and 6kW of deye from batteries?

Can the deye inverter supply more power than the rated power? I would like to use the deye inverter and sometimes when there is high solar power, for exemple charge my car faster, so when the deye deliver 4kW i will turn on onother inverter to supply the extra power (load power 8kW - deye power 4kW = generator or grid power of 4kW) Can i do this series connection? i would like this configuration in this video of Andy, is it possible with deye inverter?

Maybe you mean that dsp_original.hex is 60.10 not 90.06? Can i install only the U1 firmware not MCU? According my previus post i had U1 56.11 e U2 25.08 https://powerforum.co.za/topic/16007-axpert-vmiii-4kw-24v-firmware-miscellaneous/?do=findComment&comment=152129 now i have U1 60.10 e U2 25.16 https://powerforum.co.za/topic/29708-collection-of-dsp-axpert-firmware-for-vm-iii-twin-and-vm-iv-twin/?do=findComment&comment=213006 those firmware are original, can you see any differences in the part of mppt firmware? Now i have some issue in early mornig and cloudy condition, i have 8S configuration of panels, so i have enought voltage like 370V in working conditions, is the best fw for me the 260.10? can i install only the inverter fw and not the mcu?

Perfect, can you adjust the current or voltage to have better perfomance in cloudy condition? @Coulomb you can see the Axpert VIII Twin has some problem to start, today only after 11:00 to 12:00 it is started This is the voltage graph where you clearly see the voltage go to 370V when the soalr panels start to produce energy

After 7:00 the voltage go to 238V but zero power, so the voltage go down and when it is above 110V start the production at 8:10, so my limit is 110V not 70V as you

Hi i have Axpert VM III TWIN 4kW, now the seller send to me this firmware and it will be the latest according your collection, but i have the stuck voltage bug, i have 8 solar panel in series so i have a total VOC of 400V, can you adjust the mppt starting point to avoid the buffer time to start the MPPT? @Coulomb @esmail-kassir you have tested many fw have you see which is the best for MPPT starting point? Can you confirm that the Axpert VM III TWIN firmaware is the same of 4kW 24V and 6kW 48V? VM TWIN_60.10.7z Remote Panel_Reflash_MCU(25.16).rar

Now i have the 56.11 firmaware, 4 panels in series so 160v and 200VOC, with this value my mppt doesn t start at the morning and doesn t stop at evening

Now i have 4 panel 550w VOC 50v but in cloudy condition the mppt doesn t work very well... sometimes it stop and the power go down to 0w

@Coulomb are there any parameters to eliminate the purple spike and flat area at 60v in the morning and evening?

Yes i have this tool and the 5 ddls. Can you adjust the parameters of this inverter? mppt algorithm?

These are the firmware U1 56.11 e U2 25.08, the seller told me that to flash it i need to inser a 3k ohm resistor on the TX cable of rs232 (white wire in orignal cable)... today i will record all the data if there are some improvement VP5K.hex mcu.hex

@Coulomb can I use the usb cable or I must use the rs232 cable? I found online some instructions that connect only the AC in no battery no PV... Can I use only the battery?

I contacted the seller and he told me that there are new versions as soon as they send me the software I will post it

I have bought this inverter Axpert VM III TWIN but i have some issue with the mppt because at the morning oscillate from 0v to VOC 180v (4s 550w solar panel), the production start when there are the red arrow in the aftenoon the voltage go down and it stack to 60v, purple line is the same solare panel of the 4 series connected to the inverter but it is connected to a victron mppt 100/20 Now i have this firmaware U1 56.05 U2 25.05 @mafiose13 do you have the same issue when the sun go up e when it go down?

is your model not on the voltronic website? it's a 4kw 24v but it doesn't have a double output, right? do you have the mppt with range from 60v to 450v ? or 120v to 450v?