Re: [CAD_CAM_EDM_DRO] Re: Blown Gecko 340

andyolney wrote:

>>Bad Motor?
>>I have seen a discussion of bad/shorted windings on steppers
>>
>>
>causing
>
>
>>damage, could this apply?
>>
>>
>>
>>
>Yes, it is possible, too. You can check the motor by applying a very
>low
>voltage, such as a single D cell, and looking for a jerk in the
>rotation
>or a
>current spike as shown on a DVM in current mode.
>
>Sometimes these motor defects can be intermittent, too.
>

** it would be real helpful to know this :

> Is this blown drive
>attached to the same motor as when you last blew one? That might be
>a strong clue that it is related to the motor, wiring, or something
>particular
>to that axis.
>
>~~~~ 36VDC. Should have plenty of head room here.
>

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