Re: [CAD_CAM_EDM_DRO] Re: +/- 15V Supply

In a message dated 09-Jan-01 23:46:05 Central Standard Time,
cmsteam@... writes:

> The chassis should be at earth ground via the AC supply cord, of course.
> On the DC side...... ?
>
>

for YOUR application, the "zero" terminal (aka "common" for the + and -
outputs) should not be connected to "chassis ground". This common terminal,
aka "zero volts", is often connected to "chassis". But if you want to simply
use the + and - halves of this supply connected in series, to make 30 VDC,
the "series connection" between these halves is that "common", and it must
not be connected to anything else. The drivers you use may-well have THEIR
"common" connected to their chassis (this is "normal" and frequent in such!),
so you could end-up with a SHORT-CIRCUIT of half of the bipolar supply!
Gotta watch these kinda details!

I have stayed out of this because I am basically an ignernt old fool, but,
well, I figger I can only help you save your finger-tips, if not more, here!
Lotsa luck! JRR


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