Re: [CAD_CAM_EDM_DRO] Servo Operating Temperature?

mmurray701 wrote:

>I finally have my mill converted to servo control and am just
>wondering how hot servos generally run. After being run for about 1-
>1.5 hours the Z axis motor is slighly hot. You can still keep your
>hand on it no problem but it is a little hot. I didnt get a chance
>to run it any longer than this yet.
>
>They do have a sticker stating to use caution when touching them
>because they can get hot, but i'm just wondering how hot is too hot?
>
>The setup is Electro Craft E-543 servos running off G340 drives. The
>gain/dampening knobs are just left at factory settings. Current
>limit is set at about half, thats all the torque I need. Thanks in
>advance.
>
>

This doesn't sound too bad. These motors can generally dissipate
a fair amount of heat. The Z axis generally has the problem of constantly
supporting the weight of the moving part, thus a constant current flow
through the motor. One way to fix this is to put a belt reduction ratio
on the motor, so it doesn't have to deliver as much torque as it would
with direct drive.

Jon