Newbie- Looking for CHEAP 4AXES CONTROL & DRIVER

[shovelhead3d]

I've got the Shop Bot thats posted on the forum. I'm in need of a cheap 4 axes Bd. The motor are model pk266-02A VEXTA 1.8/STEP. i'M NEW at this,
I had plan to get the G540 GECKO. But my funds are low. I was looking at the
MECHATRONICS 4AXES. That board an a 24V power supply would cost $250.00 Will this set up work. Need help.

[tivoidethuong]

http://www.kelinginc.net/KLDriver.html

you can see this site

[jalessi]

Shovelhead,

Dont want to be a party pooper however the Vexta 266 steppers are way way to small to drive a Shopbot.

How did the 266's find there way on to a Shopbot?

What size Shopbot is it?

Do yourself a favor, dont purchase anything else until you talk to someone that knows more about the model router you have.

Welcome to the Zone.

Jeff..,

[jemmyell]

Hi, I am using Vexta PK268-01A with a G540 with very good results. You can get a 7.3A PS from Keling for a very good price. At 48V I am getting good performance (200 IPM on Mach3) on my 18" x 20" router table.

-James

[shovelhead3d]

Jeff the shopbot is an older PR 48x96 cable sys. As far as I know the 266 motor's is what shopbot used back then. There is a picture of it on the forum, I posted it befor I picked it up.I did call shopbot when I got it but not much help on the older units. They said it would be $1200.oo for the control unit. When I got this unit it had been in a fire an fried the pc & controls I've had this for about three months now.I could use all the help I can get! Thanks Tom

[ger21]

To get any decent performance from those motors, imo, you need to put at least 48V into them. Most of the cheaper drives out there won't let you use more than 24V. While the cheaper drives will work, the performance probably won't be very good, and you'll eventually replace them, which will cost you more in the long run.

[shovelhead3d]

It looks like I'll be ordering the G540 Fri. I was going to go with the Antek 35v. You say 48v Why 48v.? help me out here!

[Crevice Reamer]

Best/max voltage formula is 32 times the square root of inductance. Higher voltage charges coils quicker and gives more performance.

Those 266 motors are unipolar. I can't find an inductance rating, but they are very small.

They can only be wired in Bipolar series, Unipolar, or half winding. If you insist on using them, half winding would be the way to go, but performance will not be great.

Your best bet would be to bite the bullet and get the $636 Keling G540 package:

http://kelinginc.net/CNCNEMA23Package.html

CR.