Frequency adjustment - stepper motor
That unit, I think, doesn't have a frequecy adjustment, it has an electronic governor. The only thing you can adjust is the voltage. Peddler
I had just replaced the VR on my Guardian 4583 which solved my voltage issue. I was able to get the desired 252v no load...but the no load frequency is solid at 60hz (62hz recommended). With this unit having a stepper motor...there is no manual throttle control to set frequency correct? I would imagine it is maintained automatic.