I have used the MC-60 boards to run tool motors and one only needs a speed pot, the circuit being analog.

As far as I can tell the MC1200 is a line frequency SCR board but the speed input from the control console is PWM. There is mention of a 0 to 85% PWM signal.

Am I correct in thinking that I can't use an analog speed pot to run this thing?

Can anyone point me to a spec sheet/schematic for this item? How to determine/change the current limit? (Various different values are given in different places for the motor hp.)

Thanks for any guidance

 

I believe there is mods out there for using a 555 IC for PWM controller for it, I just have the schematic for the analogue version.
Manual for your ver below.
Max.

 

Video showing how to connect pwm generator to mc 1200 board to control the speed.

 

The Picmicro ones I put together have a stop and start P.B. also, on start, it resumes the rpm from where it left off.