u/DontBeMoronic

I've four SUN-50K-SG01HP3-AU-BM4 inverters and want to

• connect them in parallel
• read telemetry data via modbus
• control them via modbus

But I can't find any good documentation on this. Do I read telemetry from each inverter and write control to one 'master'? Or are they controlled independently and the parallel connection is just to synchronise phases? The only modbus documentation I could find is in Chinese. Would really appreciate any help or pointers to reliable documentation.

Hi, I have a SUN-50K-SG01HP3-AU 50kW 3P inverter. Works great, until the grid disconnects and the load is above ~10kW then it throws F59 "Reserved" error after about a minute.

This seems load related. It works just fine with a 5kW load.

With some googling I found people saying F59 is related to an AC grid issue - but the grid is disconnected in this case.

More googling I found people saying F59 is related to the battery being unable to provide enough current for the load. Which doesn't seem right, 10kW is nothing for a high voltage li-ion battery.

Anyone have any insight?