Quote Originally Posted by eurikain View Post
Statistically you'll use the E-STOP very few times over the life of your machine (unless you're goofy), so stopping all power going to the VFD won't hurt really.
No this is wrong you'll use the E-stop more than you realise. It's not always an emergency, sometimes you'll need to use it because you realise your going to hit a clamp or or Screw etc and don't have time to get to Control software to stop in controlled manner.

Who ever quoted me as using Timer relay with VFD is correct but only partly. Mostly I don't Kill power to the VFD I just send it Stop signal.


Quote Originally Posted by eurikain View Post
Pull earth cable from the star point to the shield of stepper motors and limit switches UNLESS you're using good shielded cable. In my case I'm using UTP ethernet shielded cable so no need for that. Plus I've got a VFD machine, so no real risk IMHO.
Again wrong. No matter the cable quality the shield should still go to Star ground. Ethernet cable can still be affected and Using a VFD makes it more important to have good grounding not less improtant.!