That’s how I was taught to terminate them as an apprentice (working on baggage handling systems) We would only terminate at the VFD/Control side, and to leave the shield unterminated at the motor end.
From what I’ve read online, people seem to be saying to earth the VFD shield at both ends. Which throws me a little.
I’m assuming the shield is to be connected to an earth source at the VFD, and the interior earth to be connected to the same point.
On the spindle end it gets a little foggy…3 phase pins and 1 earth pin. Except the earth pin isn’t physically connected to the metal of the spindle.
As I mentioned before, I’ve connected the shield to earth at the VFD/Control, but if the single core earth isn’t connected at the shield and spindle side, I don’t think I’ve earthed the shield at the spindle side.
Time will tell, I may end up joining the shield and earthing conductor at the spindle side, as I’m hoping to use the spindle as a GND reference for my touch plate. I’m thinking I may get some mis-triggers if the VFD is introducing interference - Then again, the spindle won’t be spinning when using the touch plate so maybe it will be fine.