On Thursday, January 05, 2012 03:36:36 PM Cathrine Hribar did opine:

> Hi  gene
> 
> Wanted to ask where you found your steppers?
> 
> I see that they pull 6 amps, what is the voltage and size?
> 
> Thanks
> 
> Bill

I bought all those from Jeff at Xylotex, 3 ea of the 262's he had 
originally, then bought a 4 axis kit with 425's when I needed to add a 4th 
axis.  And 6 amps might be what the 425's need when wired parallel.  They 
are 8 wire, in series & currently getting about 2.35 amps/phase.  The 425 
motor on the Z drivers ios the only 425 installed ATM, and could do more 
than that 2.37, but ISTR I had them set for 2.4 amps/phase when I cooked 
the 4 axis Xylotex board so as that seemed sufficient, I set the new 
MM-542's for about that same (2.37) amperage.

The 262's are sometimes called a double stack as they are long, and the 
425's are often called triple stack because they are even longer.

I have to open my new drivers box up, as the A axis is running at 100% 
current full time, one of the dip switches must have gotten bumped, but 
when I do I may as well set them all up to 2.84 amps.  They can go to 4.2 
amps, but that may demag the rotors I'm told.  But with 20 tpi XY screws, I 
doubt I'll gain any advantage in rapids.  I am pretty well voltage (28) and 
rpms at that voltage limited.  A 36 volt supply would help but those are 
generally make it yourself, with 3x more in parts than I have in the 28 
volt switcher with 5 & 12 volt low current outputs in there now, about a 
dollar a volt from All Electronics.

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)
My web page: <http://coyoteden.dyndns-free.com:85/gene>
I WISH I HAD A KRYPTONITE CROSS, because then you could keep both Dracula
and Superman away.
                -- Jack Handley, The New Mexican, 1988.

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