Originally Posted by
Padawon01
I can't speak to your device, but my VFD would throw an errors when my control signal was not what it should be (long story, won't go into it). I would either get an overcurrent constant speed or an overcurrent acceleration fault if the control signal was jumped at the terminals in a way that the VFD did not like. Granted, I have a different series VFD from Huanyang, but something to keep in mind.
I would try to shut everything down, power back up, and the fault would still be there every time I would attempt to run up.
I found that the VFD was retaining memory of this and not clearing it when I powered down.
I also found that by powering down and letting the VFD sit in an unpowered state for about 10 minutes, the faults would clear and I would not have any issues running the spindle. I have repeated this procedure and it works. I am not sure if this would work on your HY series VFD, but powering down and letting it sit for about 10 minutes doesn't cost anything and is something you could try if the faults keep showing up.