Re: [CAD_CAM_EDM_DRO] Re: Servo motor voltage

Mariss Freimanis wrote:

>Chris,
>
>If you don't ask the motor to go faster than its rated speed at 48VDC
>and if you don't load the motor past its rated torque then your 66VDC
>should be just fine.
>
>The 5V stuff makes it impossible to overload the motor; in your case
>you'll have to take care not to.
>
>

That's not strictly true. But, any servo drive with a current limit
(should be
all of them) will protect the motor. I am quite sure many servo motors, if
connected to a source of rated armature voltage while stalled, will draw
enough current to damage the magnets immediately, and fry the windings
soon after. NON servo-rated PM motors are generally designed such that
starting at full rated voltage from standstill will not harm the motor.
Servo-rated motors often have very low armature resistance, and can draw
much more current when stalled.

(Just a fine point.)

Jon