Re: [CAD_CAM_EDM_DRO] Help, continuing to burn drives

Did you have the 470 uf cap on the power and ground leads of you G201?
A few years ago I had a 201 setting on a heatsink and was doing some testing
after repairs for a customer. It wasn't my standard set up. The power leads
were about 14" long. I had the case off the G201 and while running a motor
found the internal 100 UF cap was getting really hot. So I installed a 470
cap across the power terminals like Mariss says to do in the G201 manual and
it cooled right down. That external cap is really important.
Dan

----- Original Message -----
From: "Ron Kline" <godsone@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, April 03, 2005 1:49 PM
Subject: Re: [CAD_CAM_EDM_DRO] Help, continuing to burn drives


>
> Mine just did the same thing Friday afternoon , for the second time in 6
> months , the machine was running fine I shut it off for lunch and when I
> turned it on after lunch the 4 amp fuse blew so I replaced it , blew
> again I disconnected the motor to see if it was shorted and it still
> blew the fuse .
> This is exactly what happened 6 months ago and Mauriss replaced the
> drive because it was only 2 months old .
> I have checked the stepper with a meter and it checks fine just like the
> rest of the steppers !
> Both times it was the same axis Z .
> ???????
> Ron
>
> Keith Clark wrote:
>
>>Hi Guys, My bridgeport retrofit continues to burn Gecko drives. It
>>happened just a few minutes ago when I powered up the machine and
>>computer. The powersupply was plugged in but the relay controlling
>>the powersupply was off. When I hit the button in the software to
>>turn on the relay the Gecko immediately burned as did the protecting
>>fuse. It always happens on the y axis when I first start up. It
>>never seems to happen while running the machine. This is at least the
>>fourth time this has occurred. Each time I think I have found the
>>problem but alas, no. The last time was early Feb and then again
>>last week. A new Gecko was installed thursday. It makes no sense
>>why the thing would run for a month with no trouble. It think
>>everything is installed correctly but there must be a powersurge from
>>the powersupply when the relay first turns on. Is this a possibility
>>and is there a way to protect from this?
>>
>>Thanks for any ideas!
>>
>>Keith Clark
>>
>>
>>
>>
>>
>>
>
>
>
>
>
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