Re: Hot servo motor

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "k8zre" <rfs@c...> wrote:

> Follow-up on Hot Servo...
>
> Y axis servo running hot but functioning. Thought I would re-tweak
> the Kp Ki Kd...set all values to zero to retune. Zzzapp! Fried
> the Y axis driver ... actually went up in flames. Checked

servo ...

> 2.2 ohms on windings per spec sheet and when motor moved by hand,
> stays at 2.2 ohms ... didn't find any shorts. Exchanged
> driver...reconnected...Paff! goes another board. Needless to say

the

> servo motor is now history. Checking with Rutex to see if boards
> repairable. Other axes work fine. What's the moral to this story?

Chuck the cable and connectors too. Could have an intermittent short
or open.

Fred Smith - IMService

http://www.cadcamcadcam.com