Re: [CAD_CAM_EDM_DRO] Re: MY 210 GECKO BURNED!!!!!!

caudlet wrote:

> If one motor is hard to turn with the *power off*, at the very least
>he has a bad motor bearing, bound up linkage or some mechanical
>problem. I don't thing shorted turns in a stepper will make it hard
>to turn with no power on it. Hopefully his 4 Amp fuse in front of his
>5A fuse (?!) may have saved the Gecko. If the motor is shorted the
>Gecko FETS are probably toast since they don't seem to have pulse by
>pulse current limiting.
>
>

Shorted power transistors in the Gecko drive will make the motor hard to
turn. Shorting the
two phase windings together will do the same. A shorted turn in the
motor won't necessarily
have this effect, but a totally shorted-out winding will.

Jon