Re: [CAD_CAM_EDM_DRO] Re: 8-wire stepper

In a message dated 5/31/2003 6:52:28 AM Central Standard Time,
gerry@... writes:

> If I run these motors
> "Half Coil" would I run them @ 2amps or 4amps?

TWO amps! This six-wire motor is intended to have the currents through only
ONE side of each of two coils at a time. That is the "published rating" you
mention.

If you run this motor as a bipolar "four wire" motor by ignoring one
"end-wire" of each winding (two wires separated and "taped off"), then the ONE "half"
will be conducting current ALL the time, instead of only HALF the time, as
intended. Thus, I think, actually, you should run LESS than the "rated current"
using a 6-wire motor as a "4-wire, bipolar", but I have no experience with
this detail myself. Mariss has made comments on this, and I think he uses a
"Factor", but I can't remember if it's simply 1/2 or 2/3 of "rated current".


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