Wavetronix VDR24 Radar User Manual

Page 23

Introduction and Overview

VDR24 Radar Detection System, Rev. 1.0

FFiigguurree 66 -- VVD

R2244 LLeefftt SSiiddee VViieew

2.3.4.5. Front Panel
The VDR24 Controller front panel provides indicators that show detection and radar

communications events. A combination keyboard and display provide a viewport into the

internal operation of the unit, where real time and historical performance metrics may be

reviewed during regular maintenance visits.
2.3.4.6. Radar Inputs, Detection Zone Outputs
On the left side of the VDR24 Controller are pluggable, cage-clamp connectors for terminating

Home Run Cable wiring from the radar sensors. AREMA compliant, isolated contact pairs are

provided for four Zone outputs as well as a Health circuit for each radar sensor. Two-wire,

isolated, dry input terminals are provided for Island Relay and Crossing Relay signals from the

railroad crossing bungalow electronics. By using these signals the VDR24 is able to ignore the

many detection events that occur when a train is moving through the crossing island. This helps

to preserve the value of the historical metrics accumulated by the system by registering only

valid vehicle detection events.
2.3.4.7. Power and Communications Connections
On the right side of the VDR24 are power connections (9-36VDC) and several communications

ports. These ports include Ethernet, RS232, RS485, and both a Host and Device USB port.

These ports are used for various configuration and networking functions described later in this

manual.
2.3.4.8. Mounting Flanges
The VDR24 is typically wall-mounted at eye level for optimum viewing, using the mounting

flanges provided on the back left and right side of the device.
2.3.5. Island Radar Accessory Components
There are a number of additional accessory components associated with the installation and

operation of the Island Radar vehicle detection solution.

IR and XR Inputs

Radar 2 Input

Detection Zone Outputs

Health Outputs

Radar 1 Input