Components
5
Panelboard
The panelboard is a circuit breaker box that distributes incoming power to the display
components that require AC power.
Surge Suppressor
The parallel surge suppressor protects the display from current 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.
Sensors Network
Rear Sensor
The rear light sensor consists of a small printed circuit board (PCB) mounted to the back
of the display.
The light sensor transmits the ambient light level behind the display to the VCB. The VFC-
3000 controller/Vanguard
®
Field Controller adjusts the display accordingly.
Internal Sensor
The internal temperature, humidity, and front light sensor measures the temperature
near the LED pixels and the ambient light level in front of the display. The sensor transmits
these measurements to the VCB, and the VFC-3000 controller/Vanguard
®
Field Controller
adjusts LED intensity to protect the LEDs from overheating.
Bottom Sensor
The bottom light sensor is located on the bottom-right of the display. It detects the light
intensity below the display.
Door Detection
The left-end sensor is located at the lower left of the door opening(s). The sensor
detects whether the doors are open or shut, and it routes this information to the VCB,
which monitors the status of the door sensors and reports it to the VFC-3000 controller/
Vanguard
®
Field Controller. This is reported as door detection to the VFC-3000 controller/
Vanguard
®
Field Controller.
Ventilation and Heater Systems
Intake Fans and Filters
Filtered intake fans mount to the lower rear of the display. The VFC-3000 controller/
Vanguard
®
Field Controller analyzes internal and external temperature readings from the
temperature sensor network and adjusts fan usage. A filter removes dust and debris from
the incoming air to protect the internal display components.
Defog Heater Fans
The heater fans mount to the bottom front of the display. The heater fans warm the front
face to prevent fogging. The controller analyzes internal temperature readings from the
temperature sensor network and adjusts heater fan usage accordingly.