Re: [CAD_CAM_EDM_DRO] Re: Blown Gecko 340

andyolney wrote:

>Jon wrote:
>
> > Yup, clearly LOTS of head room. I'm starting to think it may be a
>
>
>>>bad motor with an intermittent short. Just another thought, is
>>>
>>>
>this
>
>
>>>the SAME gecko drive that was repaired before? Maybe there is an
>>>intermittent problem in the control logic that was not fully
>>>
>>>
>>repaired
>>
>>
>>>before?
>>>
>>>Jon
>>>
>>>
>
>Jon - I tested the motor with a 1.5vdc source with an ampmeter in
>series. Turned smoothly with no hesitation and the meter was very
>steady at .12 amp. FWIW the resistance of the motor is 2 to 6 ohms
>depending on the armature position. Resistance between motor leads
>and case was higher than the meter could read. Fluke 77.
>
>

This proves the motor doesn't have a short all the time. Unfortunately,
it doesn't prove there is no intermittent problem. but, it could be the
wiring. I don't know enough about the internal details of the Gecko 340
to help much further.

Jon