Jim am I understanding this correctly?
The NEC required disconnecting means fulfills NFPA 79s Each machine shall be equipped with a Category 0 Stop.
And now that we have a category 0 stop all the other E-stops could be Category 1?
It happens that in the last month I have been involved adding safety switches on equipment. The way these are set up if you where to open a guard the motor will be shut down but dynamic braking comes on.
Most systems work best if they are kept simple rather than made complicated; therefore simplicity should be a key goal in design and unnecessary complexity should be avoided.