46 SERVO 07.2014
For the next step, you will need a three-prong power cord like the one in Figure 7.
Look for one that is at least 16 gauge and
rated at 13 amps. Connect the three colored
leads on the cord to the AC input terminals
on the power supply; refer to Figure 8.
Connect the green wire to GND, white to N,
and black to L. Use a 1/2" plastic cable
clamp to secure the wires to the board as in
Figure 9. Secure with a #6-32 x 3/4"
machine screw and hex nut.
In order to configure the controller
board, you must set the four-position switches
for each axis as shown in Figures 10 and 11.
Set the two-position switches to the positions
shown in Figure 12. Note: Ignore the lit LEDs
shown in Figure 10 as the unit was powered
up when the picture was taken.
The switches are used to set the steps
per revolution and the current for each axis.
Using the settings shown, set the current
settings to match the motors we have
chosen for this conversion. This also sets the
steps per revolution to match the Mach 3
settings we will be using. Keep this in mind if
you start making changes to the components
or Mach 3 settings. A good deal of time was
spent getting the settings on the controller
to work well with the components chosen for