RE: [CAD_CAM_EDM_DRO] 8-wire 1/2coil stepper?

Sure you can use an 8 wire motor as half coils and leave 4 wires as no
connects. Unless you think you may have coils that are connected or
shorted you will not hurt anything if you connect the parallel coils
opposing each other. The motor will just sit there and make fun noises.
This is one of the situations where I would set the drive to the lowest
amp setting it has and use a low voltage power supply. Once everything
is spinning properly up the volts and the amps.

Tim
[Denver, CO]

> -----Original Message-----
>
>
> Hi,
>
> The gecko paper for motor connection
> http://www.geckodrive.com/support/pdf/motor_connections.pdf
>
> shows 5 diagrams for connecting motors
>
> (A) 4 wire
>
> (B) 6 wire half-winding virtually = parallel
>
> (C) 6 wire full-winding exactly = series
>
> (D) 8 wire parallel = 3% more efficient than half-winding (B)
>
> (E) 8 wire series = no advantage compared with full winding.
>
> (D) shows all 4 coils wired up as compared with (B). I am worried
> about wiring the motor as I believe there may be a possibility that
> the coils may be connected to oppose each other.
>
> Question: Is it possible to add a sixth possibility (F) for 8 wires
> and sacrifice that 3% more efficient. (for added confidence before I
> embark on this, hope those who have followed this route successfully
> (or even disastrously) will post their experience
>
> (F) 8 wires half-winding exactly = (B)
>
> where only 1 coil of one phase is wired, and the other coil is
> ignored.
>
> Thanks in advance
>
> keongsan
>
>
> Addresses:
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> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
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