SmartSensor HD - Interprovincial Traffic Services

CHAPTER 2 • CONNECTING POWER AND SURGE 21SmartSensorFigure 2.1 – Using a Single Click 200NoteThe different cables available and how to wire them into the Click 200 will be coveredlater in this section.If you are using the two-part installation option above, you’ll have an underground cablerun as part of your installation, connecting the power and comms devices in the main trafficcabinet to the pole-mount box and sensor. When there is an underground cable run,it is safest practice, as well as Wavetronix standard procedure, to use two Click 200s, oneon each end of the cable: one in the main traffic cabinet and the other in the pole-mountcabinet. Both ends of the cable should be connected to the UNPROTECTED side oftheir Click 200s. This is important because the underground cable run will be susceptible tosurges caused by lightning striking the ground near it.If this run is shorter than 600 ft. (182.9 m), you can use a Wavetronix cable; see AppendixD for more on cable lengths.1 Install one Click 200 device in a pole-mount cabinet on the same pole as the sensorbeing protected. Install it by snapping it onto the DIN rail.2 Connect the cable from the sensor to the PROTECTED side of this Click 200. Thiscable should be kept as short as possible.3 Install another Click 200 in the main traffic cabinet. You will likely have power andcommunications devices in this cabinet; make sure the Click 200 is connected to themvia wires or the shared communication bus (connecting power will be covered later inthis chapter; for how to connect to communication devices, see the Click Series UserGuide).4 Connect the pole-mount box and the main traffic cabinet by running a cable from theUNPROTECTED side of the Click 200 in the pole-mount box to the UNPRO-