It all depends on the controller you are looking at and the speed of operation as to using low inertia motors.
Many hobby controllers use step/dir and require drives capable of closing the loop.
The type of controller that uses ±10vdc can use non-intelligent drives where the loop is closed back from encoder to controller.
There is a motor sizing program on the Kollmorgen site.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.