Re: BP retrofit yaxis drive burnup- follow-up

Ron, we need to compare notes to see if there is a common pattern.
Mine takes some time to burn also, but I hope my problem was having
the relay to turn off and on the powersupply on the DC side instead
of the AC side. Now I can't get the x axis to move properly... I
am going to drop to half winding mode and lower current to see if
that helps in the long run.

Keith

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Ron Kline <godsone@e...>
wrote:

> Hi
> Be sure to let us know how it holds up later , I chickened out and
> replaced my motor and the burnt out Gecko hoping that it was the

motor

> that has been burning out my 201s . The scary part is there is no

way to

> know and the drives get expensive .
> I have been running it for 2 days with no problem but in the past

it has

> taken several months for it to blow .
>
> Keith Clark wrote:
>
> >I'd like to give some follow-up on the complete reworking of my

BP

> >retrofit. I was burning up Geckos on the y axis. The installer
> >originally put in everything on top of all the original BP CNC
> >equipment. I gutted the cabinets and rewired everything. Just

tried

> >out the machine and everything works almost. The relay for the DC
> >powersupply that had been on the DC side got switched to the AC
> >side. With switching on the DC side there was always a "bump" of
> >the motors and the backup powersupply for the computer sensed a
> >spike and briefly shutdown. Now with the AC side switched there

is

> >no bump. Hopefully the electrical problems are behind me except

for

> >the fact that the x axis will not run smoothly. It stalls unless
> >tuned for very slow speed. The y and z axes run at top speed and
> >acceleration in Mach2, much better than before. It looks like

the

> >wires are all connected properly but I will recheck everything
> >tomorrow. In the old configuration the x axis always ran fine.
> >
> >If the wiring is fine and the capacitor across the power on the
> >Geckos is not bad, what next?
> >
> >Thanks for any suggestions.
> >
> >Keith Clark
> >
> >
> >
> >
> >
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