ShopBot PRS Assembly Manual Page -49
PRSAssembly080922.doc Copyright 2007,2008 ShopBot Tools, Inc
Run the YZ Wiring
You’ll run the wiring from the YZ motors, router/spindle, proximity switch, and Z-Zero plate
(if mounted) from the YZ Car, through the Echain. You will tie the router/spindle cable on
the left side of center, and the motor and accessory wires to the right side of center. You
want to keep the electrically-noisy router/spindle wires as separate as possible from the
other wires.
As you are first laying the wires out, only tighten the wire ties in a loose loop. After you are
sure everything is in the right place you can draw the ties tight and trim them. Later, you
can also attach your dust collector hose.
• Now run the router/spindle wire directly from the router/spindle using a large loop
and attaching it at the second wire-tie, The loop from the router/spindle should allow
the router/spindle full motion without the wire being in danger of chaffing on the Z
beam or YZ Car.
• Before running the motor wires, secure them first as they exit the motor, close to
the base of the motor using a long wire-tie (3 linked together).
• Note that for the Proximity Switch, there are two holes for securing the wire up to
the wire guide. Make sure this wire can’t get under the wheel bearing.
Neaten up the Wiring at the Back Side of the X Car
Wire-tie the X-1 Motor Cable to the base of the motor with a lengthened wire tie.
Secure all the cables coming from the Echain (except the router/spindle cable), along with
the X-1 Motor Cable, behind the rear lip of the Back End Plate using 2 wire ties.
Create a Cable Loop on the way to the Control Box
• From the point where the cables leave the back of the X Car, you can tie the motor
and accessory cables into a single bundle with a wire every foot or so.
• But don’t bundle the router/spindle cable with the other wiring. You will run the
Router/Spindle cable over basically the same route as the Motor Cables. But avoid
having it any closer or more parallel than necessary by letting it hang slightly
differently, etc.
• Use the remaining 3 universal Bracket Plates to attach the wiring to the bottom of
the table. Use 5/8” ¼” bolts and Tee-nuts in the bottom groove and then wire-tie
through the holes in the plate below.
• Create a large loop in both the Motor Wire Bundle and the router/spindle cable as it
exits the X gantry. This loop should be just long enough that the car is able to transit
from one end to the other of the tool without straining the cable.
You’ve now completed assembly of your PRS CNC Tool and are ready to connect it to the
Control Box and try it out. The instructions for hooking up to your Control Box are different
for PRSalpha and PRSstandard tools. Make sure to use the correct section that describes the
connection process for your specific tool.
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