Re: [CAD_CAM_EDM_DRO] If I have a Gecko G201 what's my shopping list?

>What exactly is needed, if I already have:
>-stepper motors
> -Two DC 4v, 1.1A (6 wire) (2 phase)

> -Three DC 4.5, 1.4A (6 wire) (unknown phase, probably 2 phase)

These are higher voltage and therefore inductance that is ideal. They will
work, but your rapid rates may be a little dissapointing. You will want to
use as high a voltage power supply as you can and wire them as half coil.

>-G201 drivers already...
>
>My shopping list is so far...
>- Power supply (between +24 to 80 VDC) (do I need a separate power

>supply for each drive/motor combo)?

For the power supply in your case go for the high end of the range as per
above. 60 - 62 volts is sensable as it is relatively easy to find a 48 VAC
transformer or series 2 - 24 VAC units. They will give you about 60 VDC when
rectified and filtered. You can use a single supply for all the drives and
with the above motors a 5 amp 60 VDC setup would cover you.

>- 470 uF capacitor (if more than a foot away from the power source)
> - question about this, do I need a separate capacitor for each
>drive?

Your amperage is pretty low so you could likely get by without these even if
you wires are a little on the long side. On the other hand they will not
hurt anything and are good insurance. You use one per drive and connect it
as close to the terminal block as you can. The other time that you really
need them is if you are running the drives hear the top of the amperage
range even if your power supply is real close. A way to know if you do need
them is feel the large capacitor in the drive. If it is getting hot then you
should add the 470 uf caps.

>- Wire to connect them all (12, 18, 22 gauges)
>- Something to hold them all the setup in place (sheet metal, plastic,
>whatever works)

12 G would be overkill (and not fit in the terminals) and 22 G would be on
the light side. I tend to use 18 G for moderate current draw (like you have)
and 16 G (about the max for the terminals to fit comfortably) if I am maxing
the drives out.

>Anyone have a nice three or 4 axis wiring diagram that could share?

go to http://www.ktmarketing.com/CNC.html and pick the link titles:
"Gecko G320 wiring how to diagram by Donald Brock" it is towards the bottom
of the top section. While it is for the G3X0 series the wiring from power
supply and computer to the drives is identical. I also think that Doug
Fortune has a diagram on his site.

Tim
[Denver, CO]