Re: Servo motors with Geckos get hot when idle.

Derek,

Another possibiliy is you have a very low inductance motor. Try this
if can: Disconnect the load from the motor shaft. Let the motor sit
for a while powered up. If it still gets hot you have a motor
problem. If it is stays cold, you have a load problem (something is
putting a continuous load on it). This isn't a Z axis is it?

Mariss

--- In CAD_CAM_EDM_DRO@y..., "tig415" <classic66@m...> wrote:
>
>
> > One other possibility is that you have binding or tight spots in
the
> > screw or machine, and the servo drive is trying to move the
encoder
> > just 1 or 2 counts, but the machine is resisting that move. The
loop
> > gain is not high enough to break the friction at that point, and
so
> > the drive applies moderate current to the motor, and it just sits
> > there. If the motor has a lot of armature resistance, it will
get hot
> > in this stalled condition. (This is why I recommend using motors
> > with the lowest possible resistance for servo drives.)
>
> No tight spot at all
> >
> > What motors and encoders are you using?
> >
> > Jon
>
> I'm using some surplus motors I got from dan mauch with US Digital
encoders.
>
> Thanks for the help
> Derek