Re: Dead Grizzly speed control/VFD

John M.

If this is the G8689. It uses a DC motor with brushes. I'd suspect the
brushes before the drive. If one brush hangs up it will cuase the motor to
stutter and draw a lot of current when contact is made.

For these, a VFD is no good but a low cost DC control might work. You
would need to compare V and A.

Ray


From: John Murphy <john@...>

>I've got the tiny grizzly mini mill, and my drive has cut out. I'm
>going to try to get it replaced under warranty, but I'm not willing to
>go through the trouble of shipping the mill back as it says they
>might do under their warranty.

>The symptoms were fluctuating speed and horrible blinking of the
>flourescent lights in the shop, then it died. I waited a couple of
>hours, tried again, and it started up OK, but erratic, before it died
>again. Now it won't start up at all.

>If I'm going to replace it myself, can anybody recommend a compatible
>VFD, perhaps something with a speed control input?