Re: [CAD_CAM_EDM_DRO] Re: Rotor inertia.

Mariss Freimanis wrote:

>Jon,
>
>Your 2 points:
>
>1) Though there is iron all around, there is no iron in the mutual
>coupling flux path of the armature winding. No iron, very little
>inductance. Try to find an ironless armature motor that has
>inductance even close to that of a standard motor.
>
>2) That comes as a real surprise to me. We manufacture over 2,500
>drives a month now. Over 80% go to OEMs who use them in commercial
>equipment, and more than a few of these are Fortune 500 companies. I
>wonder what they do with all those drives that you say can't be
>certified.
>
>

Do you know that they get their product certified? Any industrial
equipment that is used in a manufacturing environment can generally
skip the FCC emissions compliance tests. Desktop milling machines
would likely not be able to avoid the tests to be legal. It is somewhat
a grey area. If somebody built a computer printer with your drives
in it, they would be forced to get emissions compliance testing.

Jon