Re: [CAD_CAM_EDM_DRO] Cables Connecting Stepper Motors to Driver Circuit

Dan: Surely someone will disagree with me, but if you want to avoid
difficulty you will NEVER be able to "see", use shielded multi-pair cable
with at least #20 wire for these 1 or 2 amp steppers, and at least #18 for
3-amp Size-34 stuff. Use the usual "wire tables" to select conductor-gage,
and for cables from motor to driver, go for at least 700 circular-mils per
amp! Better, 1000 cm/amp!

The wire-size on DB-9 and "printer cables" is usually #28 stranded, and it is
so fine it just "warms up" a bit when you try to pass more than 500 mA
through it, and you can pull your hair out, trying to figure "what component
is defective", when none are! Only the wire-size!

Connectors? Good, equally-heavy stuff. "Series #126" are good. Even some
Radio Shack 4-pin CB-mike connectors are adequate for bipolar steppers!
Best, but very expensive are "machined", gold-plated connectors, but not
absolutely-necessary.

Jan Rowland, an old fool who has BEEN THERE, DONE THAT!


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