Recent content by doggy

Heaps of inverters seem to use the LCD display shown below. Does any one know what protocol and method is used to "talk" to the board and select the various icons as well as numeric fields? I'm sure someone out there must have long ago decoded this stuff or found documentation. I would be...

Okay, all done, tested and working. I left the BMS short circuit protect at 1,500 microseconds. I added a 200A DC contactor from Battery -ve to P- from the BMS. The contactor can take 700amps "make current" and around 300A "break current". So basically it and its short cabling are bypassing the...

Thanks for the interesting suggestion. However it will effectively create some grounding issues for me. I can increase the BMS short circuit time to one second, which could be okay. However I am a bit jittery about this and so will avoid it. Pushing the starter motor stall current through the...

Yes, I'm leaning towards that solution.

I have installed 8 EVE 280AH LFPs in 2p4s with a 200A (max 300A) JK BMS. All is good. However, the starter motor is around 1400W or 120A but presumably draws a lot more on start up (cranking a 3cyl diesel on my boat). It is presumably going over 300A because the BMS is triggering a SCP (Short...

I'm an experienced electronics guy and wanted to replace my 11 year old and dying primary AGM battery bank on our yacht. It was 510AH 12V. Mainly based upon feedback in this forum, I chose to buy 12 LF280K cells from Docan and amy@docanpower.com. I'll configure a primary 4s2p 560AH bank to go...

They are for my boat. I ordered 8 for the main bank (4s2p) in the stern and 4 for a second bank in the bow. Using 2 JKBMS 200A, one for each. Interfaced via RS485 to two MPPT regulators and the engine alternator cotroller. I've been testing the BMSs (GOOD!) and writing the firmware for the...

I just ordered 8 of LF280 through Amy Zheng. How long did yours take to arrive (from order to delivery?) I'm in Sydney. Regds, Dave

I imagine that is possible. Nice to be ahead of the US in something. It was Enphase USA that I asked about compatibility of my units. I did give them the hardware part numbers.

Not correct, at least for my M215s. I have an IQ7+ & IQ7A system. I checked with Enphase when I first got the M215s and they confirmed the PLC freq was the same. All of them show up perfectly on my system. Grid profiles download just fine. Reporting works fine. Exceptions reported fine. No...

Absolutely! These M215s will now be put to good use. It will be good if Enphase fixes the real problem but I am not holding my breath. Anyone adding these to an existing and working M215 setup will not have a problem. The problem is with any of the 2020 profiles (at least, the Aus ones). So...

Okay. Works fine with the selected profile and real solar panels. So basically, these M215 inverters will NOT work with any of the recent (past 5yrs) Australian grid profiles. Output is curtailed to 45watts but there are no errors, no event reports to indicate what is wrong. I suspect Enphase...

Had a small breakthrough. I have been playing with one of these on a laboratory power supply. The problem is to do with grid profiles! Perhaps the 8yr old firmware is not totally compatible with the recent (2020) grid profiles. 45watts is pretty much exactly 20% max power which is what the...

Thanks for the firmware info. The only PD marking is "Pollution Degree PD3" which will be something else. Nothing unusual on the labels. They are M215-60-230-S22-E units (60 cell, 230V, 50Hz). Cheers, David

Australia. 60cell panel,220W -> 45W max output. 2*36 cell panels in series tot 200W with Vmpp, Voc, Isc, Impp all in spec for M215 -> 45W Lab power supply with current limiting and pre-charge for M215 also gives 45W at any voltage whether in MPPT range or outside. M215 behaves per spec in...