Flash Technology
Revision A - 2/13/2020
21
HIGH INTENSITY LED LIGHTING SYSTEM – PC 270 (POWER CONVERTER)
Input power is connected to terminal block TB1. Mounted
on TB1 are surge suppression modules, which reduce line
surges and transients. Input power circuit breakers are also
mounted on TB1. Disconnect power from TB1 before
servicing circuit breakers or OVPs.
Flag indicator on the 2-pole circuit breakers is clearly
marked with green OFF and red ON.
The power supplies located in each PC 270 unit covert
input power voltage (100-277 VAC, 50/60 Hz) to the
correct DC operating voltage for the LED drivers (~58 VDC).
The control board (PCB 1) supervises flashhead operation
and provides cumulative data to the ground controller (FTC
270) via a two-way communication path (RS-485).
An internal view and component layout diagram, with part
names and numbers is show in figure 6-2.
The PC 270 comes equipped with an internal power
disconnect used for local troubleshooting and repairs. Three power supplies are located on the backplate that
provide ~58VDC to each driver assembly. Each driver assembly includes a driver board and capacitor board to
operate each connected LED FH panel. TB1 is used for AC voltage input and RS-485 communication. Details of the
PCB1 controller board can be found below in Figure 1-3. The bottom of the enclosure houses the 3 quick connect
plugs for the FH cable that leads to each FH 270 panel.
