Hey Gerald,
what about Huanyang RPM?
Did you also check hy vfd setup and huanyang vfd setup?
I think that also Huanyang VFD @Aiph5u could be informative.
When I want to program a VFD to match my spindle and my CNC controller, I first read the VFD manual. Together with the spindle manual and the CNC Controller Documentation it should give you all necessary information to program your VFD to match your spindle and to select the communication with the CNC controller. But hélas! If you bought a cheap chinese VFD, the VFD manual will sound partly like chinese. Not all VFD manuals are like those from the japanese.
Then, if it still does not work with the knowledge that is set down as Writing, then I go to to the marketplace (lat. forum) and I ask the elders – no, I don’t do that, I don’t ask the elders first, because Writing 2.0 was already invented – so instead, first I scan the data in the database, so you e.g. find and check this and this by searching for Huanyang RPM.