How do i control this servo motor?

ok i found this minebea DC motor at work and now im trying to use it with my microcontroller at home. here is the link to the motor's datasheet:





http://www.eminebea.com/content/html/en/鈥?/a>





the modle that i have is 17PM-K448U which isnt listed in that PDF file but i believe the 17PM-K449U would have a similar control.





well heres my question:


looking at the pin out, there are 6 pins: A, Acom, -A, B Bcom, and -B. from what i know about servo motors there are usually just 3 pins: Vcc, control pin, and ground. and servos use PWM to control its position and direction. how would i control the minebea motor that i have now? the chart in the datasheet shows the frequency to control the torque, but how would i control the position of the motor?





thanks!How do i control this servo motor?
This is a stepper motor not a servo. Servo motors are dc motors with a encoder. unless you're talking about hobby rc servos then im not sure if they even have a encoder.





http://www.super-tech.com/root/grp.asp?p鈥?/a>


http://www.geckodrive.com/upload/Step_mo鈥?/a>





Run the stepper using a,-a and b,-b. Acom and Bcom are center taps for the coils you dont need to use them.





To run it you will need a driver.Depending on what you ant to do. You can build a crappy one that will run the stepper but will be of little use. You can buy a usable ';cheap'; driver from http://www.hobbycnc.com/ or you can buy a good one from geckodrive or rutex.com