After two years I suppose I owe an update. I'm not staying long though, don't have the time or motivation for this.
The VFD and spindle have and continue to operate good after these two years of constant use.
For anyone who is confused about what this has all been about, I was only questioning the value of setting PD003 on this VFD as a "best practice" in the event of a power loss (factory reset) - which is why this has been centered on one parameter. I understand the others, thus they are all set correctly and the VFD and spindle are working exactly as intended. I simply disagree that the "best practice" of arbitrarily setting PD003 to 400hz on this VFD will save the VFD and spindle in the event of a power loss (factory reset). The only thing that will save your VFD and spindle is properly understanding all the necessary parameters. The reason for my disagreement is that if you believe this to be so, you might actually see this fictional beast
" Poof the Magic Dragon " after a power loss as there are far more important and relevant parameters that need to be set first before the VFD and spindle can be run safely. PD003 on this VFD does nothing to save the VFD and spindle after a power loss no matter what it is set too. Hence the "best practice" is slightly dangerous to follow as you might believe you are safe after a power loss because you set PD003 to 400Hz meanwhile PD004 "base frequency" (a far more important parameter along with others) is reset to 50Hz...
For what it is worth PD003 has been set to 100Hz and I have had to reprogram the VFD from scratch after a hard reset (power loss). PD003 stayed at 100Hz after a power loss, which is what was expected, and caused no issues because I first reprogrammed all the other far more important parameters. I left PD003 at 100 Hz because it is irrelevant to my configuration and the safe operation of the drive. I use the communication port to control the main frequency, through software, and so PD003 isn't used in this configuration. In this case, the spindle does not even attempt to turn on after a power loss until it is programmed correctly.
Also, the manual is correct, here is a picture:
Stay safe all.