Components
3
2 Components
Display
Modules
A module is a replaceable unit consisting of a display
panel with clusters of LEDs, called pixels. The pixels display
messages on the display. Refer to
.
Each module contains drive electronics that receive data
packets from the Vanguard
®
control board and lights the
appropriate pixels at the correct dimming level.
The module are also equipped with an on-module sensor
adds to the sensor layout by having a light sensor amid
the LEDs. The on-module sensor measures (in Lux) direct
light in addition to the cabinet sensors.
Vanguard
®
Control Board
The Vanguard
®
control board (VCB) receives high-speed serial data from the Vanguard
®
Field Controller through a fiber-optic or Cat-5 cable. It then distributes the signal to the
appropriate modules and sensors. The VCB receives diagnostic data from the modules,
temperature and light sensors, then transmits the data to the Vanguard
®
Field Controller.
The VCB uses an I/O interface to control beacons. The VCB also monitors door sensors,
ventilation fans, defog heaters, and power supplies.
The VCB uses a protocol that routes signal to each horizontal line of the display. With
this protocol, signal failure to one module in a horizontal line does not affect other LED
modules in that line.
Breaker Rail
The breaker rail distributes incoming power to the display components that require
DC
power.
Surge Suppressor
The parallel surge suppressor protects the display from transient voltage spikes.
Relays
Relays are solid-state switches in which the electrical current applied across one port or
terminal controls electrical currents for another terminal, such as a beacon or fan. Relays
receive signal from the VCB.
Intake Fan and Filter
The intake fan keeps internal components and the interior of the DMS cabinet cool.
Door Sensor
Each LED section is equipped with door sensors. The sensors detect whether any of the
doors are open or closed and report this information to the controller.
Figure 2:
Module (Rear View)
Note:
Do not block the intake hood’s gaps at the top and bottom of the sign.
