Spindle stopping at 10,000 rpm?

[John S]

10,000 revs divided by 50 hz equals 200.

First check on the plate that the VFD can actually go to 400 hz, many can't. I have a couple here than can only go to 150 Hz and 200 Hz.

Then check inside the parameters for Max Hz isn't set to 200 instead of 400.