Re: power supply options

Hi,

Definately go for the 48VDC supply for your 1.4A, 5V motors. All
three running will not draw more than 3A from your power supply.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "michaelpitts" <mapitts@b...> wrote:
> Hello,
>
> I am in the process of piecing together the components for a home
> brew CNC retrofit to a Smithy 1220 machine. I've acquired Gecko
201
> drivers (thanks Tim!) and have some StepSyn stepper motors on the
> way. The motors are rated at 150 oz/in, 5.1 volts. 1.4 amps. I do
> realize that 150 oz motors are considered marginal for a 3-n-1. If
I
> decide I like the CNC setup, I will probably upgrade to larger
motors
> in the future.
>
> Now I am looking at power supply options, but I don't really know
> what's best. I know I need to run them at a higher voltage than
the
> rated 5.1 volts. I think something around 40 volts would be nice.
> I've found several power supplies in the 48 volt range with plenty
of
> wattage, but I've found even more supplies in the 24 volt range for
> less money.
>
> If I could get one 48 volt, 6 amp supply for a price, or get three
24
> volt, 3 amp supplies for the same price, which would be the better
> option? How much of a difference in performance does a jump from
24v
> to 48v usually make on average for step motors like these? Is
there
> any advantage to having a separate supply for each motor?
>
> TIA,
> -Mike