Help with a treadmill motor controller
I have acquired a treadmill, and taken it all apart, and I want to be able to control the speed of the motor using a potentiometer, rather then using the control panel. From this I am then hoping to put it to use in a machine.
I have a basic understanding of electronics, but I was slightly stumped when my controller used an Ethernet cable to the panel rather than a few wires.
I have attached a labelled photo of the controller, and hopefully someone can point out where about I need to put the potentiometer.
The treadmill was a J6F Tunturi treadmill, with a 130VDC motor. From prior research it appears it is likely to be controlled by PWM, but I am not sure.
Thanks for any help!