Originally Posted by Tator
Adjusted the speed of the genset as it was too high. Brought the frequency down to 61hz at no load which gave me a voltage of 120v. This seems to have cleared up the problem although I can't rule out the re-positioning of the voltage sensing line.
The early models of the Xantrex smart chargers, weren't frequency/voltage tolerant. My first one didn't like my 76' vintage Onan at all and would switch to standby sometimes. The problem was the governor on the Onan allowed the rpm to wander around like a lost dog, as different loads cycled on an off.
I retired the old charger to home garage duty and replaced it with a new Xantrex model two years ago, which has a very wide window for both input cycles and voltage and tolerates the indiscretions of the old Onan.