Gerry is correct, they differ however if you stick to Huanyang, they appear to share most, if not all the same PD settings. They also have a pretty good manual however they don't teach you what the PD values should be, just what the PID ranges are.
There is a good post from KB2WYL from 01-08-2017 "How to Set up a Huanyang VFD and Air Cooled Spindle"
https://www.cnczone.com/forums/showthread.php?t=326310&referrerid=526494At first glance it looks like four pages of discussion but in reality it is 3.5 pages of trolling however I can't find a comment that chalenges KB2WYL's PD settings.
The Mactec guy on Cnczone is the most prolific with setting posts but he also draws the most ire from responses. His settings have changed over time plus his hecklers challenge his PD settings but don't offer their own.
In my case, just the amount of exposure to the settings debate will get you oriented in the right direction. That sucks because as geeks we want definitive instructions.
I feel your pain. I let the smoke out of my spindle.