Components
5
Section 2:
Components
2.1 Modules
A module is a replaceable unit consisting of a display panel with
clusters of LEDs, called pixels, and a driver board. The pixels
show messages on the display face. Refer to
Each module contains drive electronics, which receive data
packets from the distribution board and light the appropriate
pixels at the correct dimming level.
2.2 Power Supplies
Power Supplies
The power supplies mount to internal cabinet verticals.
The power supplies provide voltage to power the modules. Multiple power supplies provide
power redundancy. Each power supply is paired with another power supply to make a
power supply group. If one power supply in the group fails, the other is capable of
supporting the full power load, which prevents power failure to the modules.
Low Voltage Distribution Board
One low voltage distribution board (LVDB) mounts to each power supply. The LVDB
provides input and output voltage to the power supply.
The LVDB receives 120 VAC input voltage from the distribution panel.
Output from the power supply routes through the LVDB. Each output is
fused at 15 A with automotive spade fuses. From there, the 24 VDC
output routes to the modules.
LVDB diagnostics include power supply data sent to the VFC-3000
controller about output voltage and the passing or failing of each fuse.
Figure 2: Module
Figure 3: LVDB
