Connection of PM42M-048 stepper motor.

ikelectro

Member

• Nov 4, 2014

• #1

Can any one tell me how to connect a this stepper motor for uni direction. And what actually means by 2-2 phase motor?? I never worked before with motor...

 

Ian Rogers

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Most Helpful Member

• Nov 4, 2014

• #2

The phase is how the coils are wired.... You have a 2 coil motor and four wires so you have the first of these in this FAQ document at Pololu.
https://www.pololu.com/product/1208/faqs

 

dr pepper

Well-Known Member

Most Helpful Member

• Nov 5, 2014

• #3

You need to connect each winding to a full bridge.
At a guess I'd say 2-2 phase means 2 phases each with 2 wires.

 

ikelectro

Member

• Nov 5, 2014

• #4

I used L293D to drive the stepper motor. But after one or two minutes the ic got burned!


and here is my testing code to run the stepper motor with AT89C52

Code:

            ORG 0H
ASGN:        NOP
            MOV P1,#255
            NOP
MAIN:        MOV P1,#00000110B
            LCALL DLY
            MOV P1,#00000101B
            LCALL DLY
            MOV P1,#00001001B
            LCALL DLY
            MOV P1,#00001010B
            LCALL DLY
            AJMP MAIN
dly:
mov r0, #255
dly1:
mov r1, #40
dly2:
djnz r1, dly2
djnz r0, dly1
ret

 

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• l293d.jpg

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Last edited: Nov 5, 2014

ikelectro

Member

• Nov 5, 2014

• #5

And here is switching sequence from the datasheet of stepper motor.

 

Last edited: Nov 5, 2014

dr pepper

Well-Known Member

Most Helpful Member

• Nov 6, 2014

• #6

Looks as though it should work, maybe you need a l298 which can handle more current.
Depending on the motor you might need to use current limit, both l293 and l298 support this, steppers particularly at low speed can saturate and draw excess current.

 

ikelectro

Member

• Nov 6, 2014

• #7

Now I have to buy some driver, I think! May be some heat sink can handle them better... But unable to think how to implement a heat sink in the DIP PTH package?

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Nov 7, 2014

• #8

Have you seen Bob's thread.. He is using a 8051 and a ULN2803a..

https://www.electro-tech-online.com/threads/interfacing-stepper-motor-with-8051.142689/