Theory Of Operation - J Tech Photonics Pic-Convert Instructions Manual

J2:
J4:

Theory of Operation:

This board takes the step and direction output of an axis on your controller and turns it into a PWM duty
cycle (or analog) based on the position of the axis. You can choose any extra axis your controller has, or
you can use the Z axis. If you use the Z axis, just remember to either disable your motors or take off the
motor connections before you run it.
Now your laser can be controlled ON and OFF with the ENABLE input on the Pic-Convert™ board. You
can use the spindle enable command in mach 3 for this.
Then, control the power with the axis commands. "Movement" on the axis will create a signal to the
laser to control the power level. You will learn how to set up what movements will create what power
levels in the next few sections of the manual.
You can see in the next few pictures what the signal to the laser will look like at different power levels.
4 | P a g e
J Tech Photonics, Inc.
To enable PWM output, set to PWM (top two) on both J2.
To enable ANALOG output, set to Analog (bottom two) on both J2.
To enable relay control input signals, jumper on left two (Relay Enable).
To override the output relay, jumper on right two (OVERRIDE).
Pic-Convert™ Board Instructions V2.7
PWM (Yellow)
Analog (Blue)
50% Power.
Copyright 6/13/17