LiftMaster LMRRUL Manual Del Usuario página 3

Wiring
Sensor wiring: Wire the photoelectric sensor (red [+] and black [-] wires) to the operator as shown.
Heater wiring: The heater (green and white wires) may be powered in one of two ways:
• Connect to the ACCESSORY POWER ON terminal on the control board (NOT polarity specifi c).
• Connect to an external 12V to 24V DC or AC power supply (not provided) with adequate current to power all
sensors.
DO NOT overload the accessory power output on the control board or the external power supply. Use of the
heater is NOT recommended for solar applications.
Control Board
Control Board
OR
External
power supply
(not provided)
Alignment
Reconnect power to the operator.
1. Align the sensor. The red LED indicates a misaligned or blocked sensor. The blue LED indicates signal
strength. Slow blinking indicates weak signal. Fast blinking indicates stronger signal. Solid blue LED
indicates optimal alignment.
2. When the sensor is optimally aligned, tighten the sensor bracket screws to secure the sensor in place
(about 24in-lb of torque). For extra security, tighten with the set screw until it grips the sensor.
3. Place the wire cover onto the sensor bracket. Make sure the tabs on the wire cover slide into the slots on
the top of the sensor bracket. Secure the wire cover with 8-32x3/8" screws. Wire cover is NOT intended for
use with conduit installations.
Black (-)
Red (+)
Green
White
Green
White
1
3
Expansion Board
Set switch for open or close direction
Red (+) to EYE
or EYE/EDGE
Black (-)to COM
2
Red LED indicates
misaligned or
blocked sensor
Blue LED
Solid blue indicates
optimal alignment
Sensor bracket
screw
Set screw