Got some Noob questions. Thanks for any help.

1. Can anyone confirm if its safe to power up the VFD without the spindle connected for setting the parameters at the beginning ?

2. I have already purchased 3 core foil shielded Belden Cable for my spindle.
http://www.ebay.co.uk/itm/111817521022
Is this ok ?
I just read i was supposed to use 4 core CY Cable.

3. Do i have to earth the spindle at the spindle end by removing the top and making a ground point and connect to pin 4?
E.g. Should I have 4 core cable as well as the shielding ?



Cheers
Martin