Flash Technology
Revision A - 2/13/2020
26
LOW INTENSITY LED LIGHTIN G SYSTEM (MKR 372 MARKER INTER FACE AND MKR 371)
The FTC 270 controller can support lighting applications that require the use of low-intensity LED obstruction lights
(i.e. L-810). These may be used in conjunction with high-intensity or medium-intensity lights (or both).
MKR 372 MARKER INTERFACE
A tier of marker lights is powered by the MKR 372 MARKER INTERFACE located at the marker tier level. This
marker interface accepts 120-240 VAC input power, and provides 24VDC to power to up to four MKR 371 LED
markers. An internal breaker is provided to disconnect power at the related marker tier level. The marker interface
board communicates to the ground controller through the use of RS-485.
NOTE: The RS-485 termination jumper should be open on the MKR 372 INTERFACE PCB. In certain custom
installations, when only low intensity led MKR fixtures (MKR 371) are used, the term jumper should be closed on
the last MKR PCB with all other jumpers in the open position.
