
Installation and Programming Instructions
EMX NIR-50-325 PhotoEye
22
support.hysecurity.com MX4620 Rev. D ©2022
EMX NIR-50-325 TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE SOLUTION
Unit stays
in detect
mode
• Unit out of alignment
• Reector covered with dirt,
dust, mud, snow or water
• Water inside reector
• Verify alignment
• Clean reector surface of
contaminants
• Replace reector
No
output
• No Power
• Bad connection, wires
broken
• Improper wiring
• Check power and wiring
as per instructions
• Check connections
• verify wiring to control
board
No
detection
• Unit not powered
• Other reective surface
causing signal return
• Check power
• Check surrounding area
for reective surfaces
FIGURE 1-2: EMX NIR-50 325 Features
Red
LED
Sensitivity
Adjustment
Mounting
Brackets
Yellow
LED
LENS
EMX NIR-50-325 LED INDICATION
LED Color ON OFF
Yellow LED Energized, aligned, and stable Unit o or unstable
Red LED Energized and alignment correct Beam obstructed or reector not aligned
6. Hold reector 3 feet in front of photoeye lens and verify both red and yellow LEDs on photoeye light up.
While moving backward to the reector mounting location, ensure the reector is continually aligned (red and
yellow LEDs on). Move reector up, down, left or right to keep reector in center of the signal path.
7. Verify the NIR-50-325 and reector are in line of sight, conrm the red LED and yellow LED are ON (indicating
correct alignment), then mount reector in ideal position.
8. Block the beam with your hand, or another object, and ensure the sensor’s yellow and red LEDs turn o.
Check the operator control board input LED (FIGURE 1-1) and verify that the UL/Edge input is properly
actuated. When the beam is not blocked, the red input LED will be dimly lit and when blocked, it will be
brighter.
9. Unblock the beam and the photoeye yellow and red LEDs should light at full brightness.
Reector
Photo Eye
CAUTION
Passing vehicles may act as a reector and cause a false reading allowing a
gate to close on a vehicle. Nice/HySecurity assumes no responsibility in these
cases, and all risk falls to the installer, designer, and users of the gate system.
NOTICE
Signal pattern is 2 feet in diameter.
Visit https://support.hysecurity.com/hc/en-
us for installation manuals, replacement
part instructions, part diagrams and more.
For the name of a qualied distributor near
you, call Nice at 800-321-9947.