Hello there.
I am trying ti reuse mc2100 board and hack it even more. Looking for the way to introduce a close loop with the motor, rotary encoder and arduino. I tested PWM signal being applied directly to the R21 disconnected from Cypress chip on board. Technically, it works. I don't need any 20Hz signal in thsi case , I can directly manage MOSFET with PWM of my own.
Wondering if Cypress chip will still maintain overcurrent protection by measuring voltage drop on resistor R32 and slow start with Tyristor Q1. Did anyone investigated that ?

Mod: created new thread, link to old.
https://forum.allaboutcircuits.com/...ill-motor-control-circuit.100678/post-1909208

 

If you want true closed loop and not just RPM control, you will need some kind of PID control method.
For RPM, there is the tach input signal.

 

If you want true closed loop and not just RPM control, you will need some kind of PID control method.
For RPM, there is the tach input signal.

I do have PID implemented in Arduino. Works quite well. I tuned PID constants for the standalone motor , but will need to re-tune it again when it installed on the mill.

Just wanted to have current censing working and Vds measured