Re: stepper power question(s)

It delivers the same torque as a 200 step motor but it holds that
torque to twice as many steps per second. In other words, same torque
at the same RPM as a 1.8 degree motor.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "turbulatordude" <davemucha@j...> wrote:
> Thanks VERY MUCH for the calculation. archived for
> future use.
>
>
> regarding the 200 or 400 steps per revolution.
>
> If one was to drive a leadscrew directly, the
> 400 would be half as fast, but would it also
> deliver twice the torque ?
>
> would they be the same if one was to use
> a 2:1 reduction on the 200 so that each
> would spin the screw at the same speed.?
>
> It seems to me that since torque will fall
> off as speed increases, the 400 would deliver
> more on a direct drive installation.
>
> Dave
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...> wrote:
> > Dave,
> >
> > 1. No difference in power. The motor draws the same current
whether
> > it is stepping or not.
> >
> > 2. Figure 5W per coil for a single stack 23, 8W for a triple
stack.
> W
> > = I^2 * R, so I = square root of W / R. Make W = 5 and R = 1.1 so
I
> =
> > 2.2A.
> >
> > Mariss
> >
> > --- In CAD_CAM_EDM_DRO@y..., "turbulatordude" <davemucha@j...>
> wrote:
> > > If I have two identical steppers.
> > > same voltage, same current,
> > > 200 steps and 400 steps,
> > > does the 400 steps deliver more
> > > power? seems like if you deliver
> > > 1 amp per step, then it would
> > > deliver more amps per revolution.
> > >
> > > Second question,
> > > I have a NEMA 23 1.1 ohm stepper
> > > bi-polar. it is from the early
> > > 90's and I can't find any info on it.
> > > is there a ballpark way to figure out
> > > the volts and amps ?
> > >
> > > Dave