Wavetronix VDR24 Radar - Manual (Page 23)

Introduction and Overview
VDR24 Radar Detection System, Rev. 1.0 23
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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