Kirk,
Hey man just wanted to tell you that is a SCHWEEET! looking Shiz my
friend. Looks like you have done a lot of nice work to it. Toolchanger and
everything just awesome. Enjoy it my friend!! Peace
Pete
On Sat, Jan 24, 2015 at 11:49 AM, Kirk Wallace <kwall...@wallacecompany.com>
wrote:
> Thinking aloud...
>
> I have been playing with an MA860H stepper drive which seems to work
> well enough for my mill.
> http://wallacecompany.com/ma860h/
> http://www.wallacecompany.com/machine_shop/Shizuoka/
>
> I have an Antek toroidal transformer that is feeding 75 VAC to the
> drive. The drive has an input limit of 80 VAC or 110 VDC. Although, to
> feed three drives, I'll need a bigger transformer to supply 15 Amps or
> more. I can use a 60Hz big iron transformer, but these are big, heavy
> and expensive to purchase and ship. I could use multiple toroids, but
> these are expensive.
>
> Then I got to thinking. What about a buck converter to convert mains
> (120 or 240 VAC) to mains DC to high Hz AC to let's say 90 VDC? Or more
> simply, pump the useful part of the mains AC into a large capacitor in a
> way that maintains the DC voltage I need? This sounds a little like an
> SCR circuit, such as a light dimmer, universal motor speed controller,
> or SCR DC welder. This might be a way to leverage a cheap second hand
> commodity device to a specialty purpose. (But keeping in mind that
> common converters don't like their outputs switched.)
>
> So, what are some ways of feeding roughly 90 VDC or 70 VAC at 15 Amps to
> motor drives from 240 VAC mains?
>
> --
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/
>
>
> ------------------------------------------------------------------------------
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--
Pete Matos
A and N Precision and Fabrication
Maryville, Tennessee
865-236-8996
------------------------------------------------------------------------------
New Year. New Location. New Benefits. New Data Center in Ashburn, VA.
GigeNET is offering a free month of service with a new server in Ashburn.
Choose from 2 high performing configs, both with 100TB of bandwidth.
Higher redundancy.Lower latency.Increased capacity.Completely compliant.
http://p.sf.net/sfu/gigenet
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