Chamberlain RP1EV Manuel D'instructions page 7

The photoelectric sensor and reflector must be on the same
horizontal plane to each other. When properly wired and aligned,
the yellow LED within the photoelectric sensor WILL NOT be
illuminated. The LED within the photoelectric sensor will blink
rapidly when the sensor is not at the optimal position. If the LED
is solidly illuminated this indicates it is powered up correctly and
is NOT aligned with the reflector.
Figure 3 refers to the alignment of the photoelectric sensor.
Connect the photoelectric sensor to the operator and observe the
yellow LED of the photoelectric sensor.
LED Solid
LED Flashing
LED OFF
If the RP1EV is not aligned, rotate the sensor clockwise/counter-
clockwise as shown in figure 3 until the
LED stops flashing and is not illuminated.
If the LED flashes, the RP1EV is aligned but may need fine
adjustments to either the sensor of the reflector.
(figure 3)
Interruption of a RP1EV will prevent openers from completing either a close or open cycle depending on opener and configuration.
The LED positioned within the RP1EV sensor displays the status of the sensor and also assist with installation. If the RP1EV sensor
displays the correct LED indicators during normal operation, but does not stop the door from closing, check if the cable has been
connected to the correct input terminals and the configuration.
LED Status
OFF
Door NOT operating as expected
Connected correctly but misaligned
ON Solid
ON FLashing
RP1EV not aligned
RP1EV not fully
RP1EV Aligned
Symptom
RP1EV Sensor aligned Door
operating as expected
RP1EV Sensor aligned
Obstruction detected
RP1EV Sensor not fully aligned
ALIGNMENT
Rotate the photoelectric sensor within the
housing to align the sensor
DO NOT BEND THE BRACKET TO ALIGN
Marginally aligned. Needs fine
adjustment towards the centre
OPERATION
Cause
Connected correctly and
aligned
Not connected correctly
Connected correctly but
misaligned
Obstruction detected
Not optimally aligned
7
Photoelectric sensor
Centre aligned
Reflector
FIG 3
Resolution
None. Working correctly
Check connection. The RP1EV is
polarity sensitive
Align the RP1EV sensor or reflector
Check for obstruction
Align the RP1EV sensor or reflector
EN