Re: stepper power question(s)

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