User's Manual

22
and simplify maintenance. The wire ferrules provide a solid connection end point
for screw terminal connections.
Mounting the Back Plate
Use the following steps to mount the back plate in the traffic cabinet:
1. Locate the space planned for mounting the back plate. Often, the PCU will
be able to mount on the side panel of a NEMA style cabinet.
2. Attach the back plate with the u-channel mounting screws.
Connecting AC Power
Since SmartSensor Matrix operates on 10-28 VDC, the standard Wavetronix stop
bar detection system back plates provide an AC power conversion option. If you
select this option, the back plate will be loaded with the necessary AC to DC power
conversion, power surge, and circuit breaker.
If you choose to have your PCU built without the AC power conversion sub-assembly,
you will need to tap into surplus DC power capacity resident in the traffic cabinet. In
this case, Wavetronix recommends the use of the Click! 221 to protect the PCU and
SmartSensor Matrix units from DC surges. The Click! 221 is an 8-amp DC surge
module. For wiring and other information on the Click! 221 see Appendix E.
Note
If you have a 330 series (170/2070 style cabinet) with a 19” EIA rack, please
contact Wavetronix Technical Services for assistance. Wavetronix can provide
modified PCUs that attach to a 19 inch rack.