PWM/HPWM Stepper Motor Controller

[Dave]

These type of controllers require a digital direction input, an digital enable input, and last but not least, a digital step input. The controller will advance the motor 1 step for every digital input pulse. Depending on the steps per rev. setting made thru the dip switches.

[DavyJones]

These type of controllers require a digital direction input, an digital enable input, and last but not least, a digital step input. The controller will advance the motor 1 step for every digital input pulse. Depending on the steps per rev. setting made thru the dip switches.

Agreed..... I think I understood that what I am missing is if I am am going to send PWM/HPWM out on one of the pins (lets say as an example I set it up for 200 pules per revolution) is that 200 pulses per second or? How if I set it up for 200 pulses per revolution would you regulate the speed?
Thanks

David

[mark_s]

This is a simple way to generate step pulses

Count = 1

While count < 2000  ' Send 2000 pulses rotate motor 10 times

Latx = 1 'Output 10us pulse to stepper drive
pauseus 10
Latx =0

Count = Count +  1
pause  10 ' use this delay to slow down or speed up the motor
 Wend

[DavyJones]

Thanks Mark_S that makes sense to me know
David

[mark_s]

David, at 200 steps per revelolution the motor will run rough. Once you get it running change the dip switches on the driver to 1/8th step or 1600 pulses/rev. It will run much smoother.

Mark

[DavyJones]

Mark thanks for the info. I'm new to working with stepper motors and their controllers. Seems a little easier to use a controller than to do all the programming to pulse all 4 inputs on the motor manually.
It looks like the NEMA rating just has to do with the size of the front or something here is the NEMA 23 one I got. It looks like this is rated 2.8 amps so would you mind I should set my controller dip switches to reflect 2.8 amps right?
Thanks
David

[mark_s]

Mark thanks for the info. I'm new to working with stepper motors and their controllers. Seems a little easier to use a controller than to do all the programming to pulse all 4 inputs on the motor manually.
It looks like the NEMA rating just has to do with the size of the front or something here is the NEMA 23 one I got. It looks like this is rated 2.8 amps so would you mind I should set my controller dip switches to reflect 2.8 amps right?
Thanks
David

It's depends on your power supply voltage and what you are driving with the motor. I would start at half of the rated current and see how it works. Yes the NEMA number is the mounting size. What are you driving with your motor?