sudo-st

Hi, I tried QFS and QFAULT, but both commands didn't work for me. Answer is always "NAK". I also tried it in WatchPower, but the only thing I see in the logs is the LINE_FAIL (which is obvious because I didn't connect the inverters to grid). Setting 25 is enabled on both Axpert Max I. In the meantime I also connected at least one of both devices to grid to test. But still loads are not switched on. Today I can try to supply also the second inverter with grid (its some wiring effort). Do you think this will change something? Or is there maybe a bug in the 272.62 firmware or is a check if the model name / vendor is exact the same implemented?

The only thing I see that in the warning bits Line_Fail is active (because no AC-In connected) and after some times on both devices EEPROM fault bit gets set to 1.

Hello, a small update, also when I disconnect the link between the two AC outputs, the loads don't switch on. I also checked both inverters with watchpower / ma own read tool on a raspberry pi using the commuication protocol. I dont see a failure or a warning during parallel mode. All firmwares of CPUs and display are simmilar. QPI is PI30 for both. Only device IDs are different of course.

Yes the parallel cards were pre-assembled as far as I see. I have on both inverters two VGA ports and two current sharing ports for the twisted cable. I connected the inverters with two VGA extension cable I bought (Inverter distance 2.5m, original cable only 1.8m) but I checked the pinout, the connected wires are the same. I modified the current-sharing cable to the same length by changing the twisted black and red wires with longer again twisted 0.75mm² wires and connected them also. And I set the output mode to parallel (PAL) on both inverters. Both inverters use the same battery bank. The only thing I recognized is that the displayed voltage between both inverters differs by approx. 0.3 V - 0.4 V. Could this be already a problem and I should calibrate the voltage? The strange thing is I don't get any failure code, but loads are not switched on. So I would assume that some internal condition for parallel operation is not being met. Every Inverter had its own AC fuse box. I connected both fuse boxes together (but on the current rail before the fuses). Therefore, I can rule out swapped cables. But I can check if the output starts if I disconnect the connecting cable that links the two AC outputs.

Hello, I am using version 272.62 on two inverters for the last 3 years and ist works fine. 😃 I have one EASUN Axpert Max and a Solarpower24 Axpert max both with the same firmware. Should it be possible to use both devices with 272.62 in 1 phase parallel mode? Because in my last try one was master and one slave and I got NO failure code. But when starting the inverters AC output the inverters start, but they dont switch the load, so I get 0V on the output althoug I can hear the AC inverter running (the IEC power cable symbol doesn't appear). Is there anything I can do?

Oh that explains of course why I always got the wrong version displayed, but don't worry. 😄 I flashed now the right one and get also the right 272.62 Version displayed. So lets see how this firmware works. 😀 Thanks for your effort and your fast support!!

Sorry I mean I see 72.62 of course, not 72.66. But it should be 272.62 on watchpower, right?

Hi, I flashed patched version 272.62 yesterday. But when looking on the U1 on screen, as well as in watchpower I see only 72.66. Is that normal?