Newbie- How to connect stepper motor, newbie question.

[scientizt]

Hi there,

I'm very new in working with cnc systems, but i decided to try my luck in making a cnc controlled machine, it's a prototype so i can't say much yet, but if it's ready and working i will share the project with you.

I bought a new stepper driver ( http://shop.strato.de/epages/6112548...33PCV4/EAP4%22 ) with 3 new motors (Astrosyn Minebea 23LM-K202-P2).

Too bad i can't find any info on this motors, and now i need to know how to connect them to my driver. The motors have 4 wires coming out, pink, yellow, green and blue, the driver also has 4 connections per motor.

What is the best way of finding out how to connect this motor, so how to find out what wire is what?

And another question, the motors are 3,5v Phase, by 1 amp Phase, my driver can handle up to 48 volts, what would the best voltage be to control these motors?

Thanks,

Scientizt
(the netherlands)

[vger]

The driver you have is most likely a PWM driver and limits the current through the motor and is probably adjustable by looking at the picture. Meine Deutsch ist nicht gut. If your steppers are 4 wire, then it is bipolar and should work fine with that driver. You will want to adjust the current as not to overheat the motor. You will find that the stepper motor turns by hand fairly easily with no connections made with any of the wires. Connect 2 of the wires together, pink and blue, and try turning it.... if it is harder to turn, then those two wires are connected to the same coil in the motor, and the other two, yellow and green, are connected to the other coil. If it is still easy to turn, connect the pink and green wires together and try again turning by hand. If it is harder to turn, then those two, pink and green, are one coil, and the yellow and blue are the other coil.

Steve

[Crevice Reamer]

Hi scientizt. Welcome to the Zone!

Your motor only has 2 sets of coils. Use an ohmeter to check for continuity between pairs of wires. Those with continuity are a phase.

A general rule of thumb is that a stepper motor needs to be powered by at least 20 times the rated voltage. That would be 70V, so 48V would seem to be your best PSU Voltage. If we knew the inductance, we could narrow that down farther.

Here's some basic CNC info for you:

http://crevicereamer.com/Page_2.html

CR.

[scientizt]

Hi there,

Thanks for the help, the problem is solved.
Now to the next, of many haha, still a long way to go.

Thanks again,
S