I have a treadmill I've been trying to get running for quite some time. It originally had a bad motor controller and I have replaced it with a couple of industrial drives over the course of about a year. Both have met their fate from a simple error on my part while prototyping.
Originally, I used the treadmills original control panel and an 08m to translate its speed pulse signal to a servo angle, and linked the drives pot to the servo. It worked well, but is a little clunky, and honestly I'd like to scrap everything but the motor and start over.
I have a IR P102W SCR pack from my last drive that is good, but unless anyone has a straight forward idea how to drive it with a micro I'm probably going to abandon it all together.
My thought is that a FET and FET driver setup with PWM from the Picaxe would be the most straight forward approach. The motor is 90VDC with a FLA of 10A. I'm having trouble finding a good circuit to base off of, and honestly need some help with selecting the FETs and driver. If anyone has some suggestions,stories, and application notes I would greatly appreciate your advice. Thanks.
Originally, I used the treadmills original control panel and an 08m to translate its speed pulse signal to a servo angle, and linked the drives pot to the servo. It worked well, but is a little clunky, and honestly I'd like to scrap everything but the motor and start over.
I have a IR P102W SCR pack from my last drive that is good, but unless anyone has a straight forward idea how to drive it with a micro I'm probably going to abandon it all together.
My thought is that a FET and FET driver setup with PWM from the Picaxe would be the most straight forward approach. The motor is 90VDC with a FLA of 10A. I'm having trouble finding a good circuit to base off of, and honestly need some help with selecting the FETs and driver. If anyone has some suggestions,stories, and application notes I would greatly appreciate your advice. Thanks.