Wavetronix VDR24 Radar User Manual

Page 31

Installing Radar Sensors and Cables

VDR24 Radar Detection System, Rev. 1.0

4.4. Connecting the communication cable

Once the radar and mount are secured into position and initially aimed at the area where

detection zones will be established, the weatherproof plug on the mast riser cable and the earth

ground connection must be made to the radar sensor. Before locking down the radar sensor

connector, a dielectric compound must be applied to prevent corrosive consequences of long-

term weather exposure.
4.4.1. Applying the Silicon Dielectric Compound
Use the following steps to correctly apply the silicon

dielectric compound to the cable connector:

1. 1 Tear the tab off of the tube of silicon

dielectric compound.

2. Squeeze about 25% of the silicon onto the

pins of the receptacle side of the connector

at the base of the SmartSensor-Rail sensor.

Be sure to wipe off any excess compound.

3. The next step is to plug the SmartSensor 7-

conductor cable into the connector. The

sensor connector is keyed to ensure proper

connection; simply twist the plug end of the

connector clockwise until you hear it click

into place.

4.5. Connecting the Earth Ground Cable

The Radar Sensor must now be grounded either to an earth ground stake at the base of the

mast or to a lug that is welded onto the pole (in the case of a metallic pole):

1. Connect a grounding wire (16-gauge minimum) to the grounding lug on the bottom of

the sensor.

2. Connect the other end of the grounding wire to the earth ground for the pole that the

sensor is mounted on. Do not attempt to run the grounding wire back to the main

controller cabinet.

4.6. Securing the Communications Cable and Earth Ground Cable

To avoid undue movement from the wind, strap the 7-conductor cable and the earth ground

cable to the pole or run it through a conduit, but leave a small amount of slack at the top of the

cables to reduce cable strain. Route the cable from the sensor location to the mast junction box

where it can interface to the home run cable leading back to the main controller.

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