Digital Concepts ACD3X motor controller inputs

Thread Starter


Joined Sep 27, 2021
I pulled a 5Hp motor and controller out of a True Fitness Commercial Treadmill. The controller is by Digital Concepts and is marked ACD3X Rev2. I'm fishing here to see if I can get any pointer on controlling the motor for a 100yr old engine lathe.

So far, I've locate the 74HC14 on the board, which leads me to believe that it will take a 160-320Hz PWM signal like other Digital Concept boards. I do have one of the miniature generator for the signal. Just trying to figure out which pin to apply the signal to, and whether there are any other sensor inputs that I need to work around.

The motor is a MaxDrive. Part number 7-196230-01. Really nice motor, so I'm also looking for other ways to control it.