I have an off-grid solar power system I built that has been up and running for about three months. Have about 800W pvs, lots of second hand batteries from standby system via scrapyard, and Outback FX2524 inverter.
I have a lovely 50 year old 500 lb 120VAC 1800RPM 3KW generator driven by 1-cyl Wisconsin engine, that I have used to run my machine shop for 20 years. But the FX2524 does not like it. When I try to use charge function on the FX 2524, it is almost impossible to get it to accept the AC from the generator. The FX gives error message saying that the AC frequency is BOTH too high, and too low. I do not know the exact frequency I am running at, but I can adjust the generator RPM over a wide range, and SOMETIMES the inverter will "lock in" and accept it, but often not at all.
I've tried Outback Tech Support, they basically gave up and said I need a new generator. I tried their Forum, and found another guy with a much fancier generator, and same problem.
Any ideas much appreciated!