E-STOP Design Help

I'd like to get some feed back on my E-STOP wiring diagram, I have plagiarized a design from madpenguin for this design. I have planned for 2 220 30amp circuits, one to drive a VFD for the spindle 3PH motor and the other circuit for driving the servo motors, dc power supplies (5v and 24v) and computer, etc. I plan on using a heavy duty 30A rotary switch for the main power switch and a momentary switch to energize the system and provide power ON feedback to the 7I77 Mesa board and LinuxCNC. Any input and/or others ideas is much appreciated.

Thanks

Hello,

I would recommend that the emergency stop would also be hard wired connected to some sort of ENABLE (or better STOP) in the VFD and also to the servo drives.
All things that can move or hurt the machine user should stop as fast as possible if the emergency stop is pressed and should not rely on any electronics.
In my machines we always do this + connect to one pin on the 7i77 or 7i76 that is also connected to the emergency stop of the linuxcnc.