On Saturday 23 February 2008, Mark Wendt (Contractor) wrote:
>Gene,
>
> This probably isn't exactly the one you're looking for, but
>it's considerably cheaper than $90. You do have to install a 5k
>pot. They work very similar to the mini-lathe motor controllers in
>that you have to ramp up the speed. I think they're based on the
>controls for treadmills and are rated for 8 amp continuos output at
>130 VDC. I've got two of these fellas I'll be using on my CNC saw beveler.
>
><http://www.surpluscenter.com/item.asp?UID=2007122717513748&item=11-2449&cat
>name=electric>
>
>Mark
Thanks Mark, but the KBIC I have internal to the micromill is functioning just
fine. However that, and that .75 horse DC motor would make a nice combo for
spindle drive as the existing motors maximum of 2500 at the spindle is a
limit to using it for engraving. OTOH, I have no idea how long that spindle
would survive at 10k rpms either. It certainly could be boxed up for swarf
protection and remotely mounted for use as a replacement should the KBIC die.
For that, having one on the shelf might not be a bad idea since they want
around a 100 dollar bill for a new one if I let the smoke out of this one.
That motor, face mount, Item 10-2326 at $19.95 certainly isn't suitable though
as its cooling is lengthwise and the ends are wide open, looks to be very
cheaply made and for a clean location. 13 lbs, at least double the weight of
the existing motor. But I'd have to build a whole new drive box and that's a
bigger mill called an X3 I believe. :)
Anyway, to run that unit with emc, I'd still need Steve's interface to control
it & he is only a half a days drive from me if I can figure out the road.
OTOH he takes VISA. :-)
>
>At 06:03 PM 2/22/2008, you wrote:
>>Greetings;
>>
>>I came across a link 4 or 5 days ago for a speed controller for these line
>>voltage dc motors like the HF mill and 7zx12 lathes use that had all the
>>fwd/reverse relays etc incorporated on the board, along with a variable
>>voltage optoisolated source that replaced the speed pot in the KBIC
>> circuit, and sold for a hair less than $90, which compares with the
>> DigiSpeedXL at $66 but it didn't have the extra reversing relays this
>> interface kit does.
>>
>>I neglected to bookmark the site, and now google can't find it
>>again. And I'd
>>would rather not deal with an au company as they advertise in USD, but I've
>>wound up paying in AUD which is a good premium charge for somebody. Twice
>>now, and the diff has totalled to nearly 50 bucks.
>>
>>Can anyone else recall the name or url for the interface/control device I'm
>>describing?
>>
>>Thanks.
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Don't go around saying the world owes you a living. The world owes you
nothing. It was here first.
-- Mark Twain
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