The machine runs at 2 GHz with
a parallel port, and works great
with all my CNC machines.
Start by laying out the power
supply and controller panels with
the rear of the CNC on one side
and your PC on the other as
shown in Figure 18.
Take the controller power
connector that you attached to
the power supply earlier and
plug it into the controller
(shown in Figure 19). Please
note the orientation of the red
and black wires. If you reverse
these wires, you will destroy
the controller. Once you are
happy with the connection,
plug the power supply AC cord
into the wall. The controller
should light up several LEDs.
In order to connect the
stepper motors to the
controller, attach the motor
wires to the connectors that come with the controller.
There are several ways to do this. You can cut the header
off the motor wires and connect them directly to the
controller connector. I tend to make little connectors by
soldering some leads to a four-pin header that will plug into
the motor connector. This makes it easy for me to move the
controller to other CNC machines if needed. Figures 20
and 21 show one such connector.
The advantage of the little dongle is that you can
reverse the motor direction by pulling out the connector,
flipping it, then plugging it back in.
Important!!! Never disconnect the motors from the
controller while the controller board is powered up!
Figure 22 shows another connecter I made. It’s about
two feet long. Later, when the controller is mounted inside
the KReduCNC frame, the extension is needed so the motor
can reach the controller.
No matter how you decide to connect the motors to
the controller connectors, insert each connector into the
appropriate socket on the controller (Figure 23).
The last part of the hookup is to connect the included
parallel cable from the controller to the PC as shown in
SERVO 11.2016 41
Figure 22 Figure 23