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RA Indoor Unit Functions SiUS121827E
72 Part 4 Functions and Control
2.9 INTELLIGENT EYE Operation
Applicable
Models
CTXS07LVJU
FTXS09/12/15/18/24LVJU
Outline The microcomputer detects the presence of humans in the room with a motion sensor and reduces
the capacity when there is nobody in the room in order to save electricity.
Details 1. INTELLIGENT EYE detection method
The motion sensor detects human motion by receiving infrared rays and sends the pulse wave
output.
The microcomputer in the indoor unit carries out a sampling every 20 msec. If the motion sensor
detects 10 times or more of the wave output in one second in total, and the High signal
continues for 3 sec., the microcomputer judges humans are in the room as the human detection
signal is ON.
2. Motions (in cooling)
In FAN operation, the fan speed is reduced by 60 rpm when no one is in the area.
When there is no signal from the motion sensor in 20 minutes, the microcomputer judges that
nobody is in the room and operates the unit at a temperature shifted from the target
temperature. (Cooling/Dry: 1 ~ 2°C (1.8 ~ 3.6°F) higher, Heating: 2°C (3.6°F) lower, Auto:
according to the operation mode at that time)
1 sec.
Sampling (20 msec.)
High
Low
ON
OFF
High
Low
(R24035)
(Condition of 10 times or more output)
Human motion
3 sec.
If the detection signal (High) continues for 3 sec. or more,
the microcomputer judges humans are in the room.
Detection signal
from the motion
sensor
Human detection
signal
Motion sensor
output
If the motion sensor detects the outputs
10 times/sec. or more, the microcomputer
judges the detection signal from the
motion sensor is High.
ON
OFF
Reset Reset Reset
20 min.
1 ~ 2°C (1.8 ~ 3.6 °F)
ON
OFF
ON
OFF
Operation
OFF
Fan speed (#)
Set speed Set speed
Target temperature
(R23920)
Remote controller
Sensor button
Human detection
signal
↑↑
60 rpm
↑
within
20 min.
within
20 min.
within
20 min.
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