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Main Functions
SiBE12-933_A
70
Function and Control
1.12 INTELLIGENT EYE (ATXS, FTXG, ATXG, CTXG)
This is the function that detects existence of humans in the room by a human motion sensor
(INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to
save electricity.
Processing
1. Detection method by INTELLIGENT EYE
This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
A microcomputer in an indoor unit carries out a sampling every 20 msec. and if it detects 10
cycles of the wave in one second in total (corresponding to 20 msec.× 10 = 200 msec.), it
judges human is in the room as the motion signal is ON.
2. The motions (for example: in cooling)
When a microcomputer does not have a signal from the sensor in 20 minutes, it judges that
nobody is in the room and operating the unit in temperature shifted 2°C from the set
temperature. (Cooling/Dry : 2°C higher, Heating : 2°C lower and Auto : according to the
operation mode at that time.)
★
1 In case of Fan mode, the fan speed reduces by 50 rpm.
(R2821)
sampling (20msec)
Sensor output
(Human motion)
Human detection
signal
High
Low
ON
OFF
1sec
If the sensor detects the outputs 10 times/sec.
or more, it judges humans exist.
(R7117)
within 20
minutes.
20 min.
20 min.
40 min.
RESET.
ON
OFF
Human detection
signal
Cooling : Set temp. + 2°C
Heating : Set temp. – 2°C
Set temp.
Remote controller
INTELLIGENT
EYE button
ON
OFF
Operation
ON
OFF
Fan speed (
1)
OFF
Set speed
Set speed – 50 rpm
Set speed
MaxHz
Compressor
speed
MinHz
0Hz
Frequency at set temp. + 2°C
The lower limit by detecting
human.
(Prohibition of thermostat-off)
in case of
thermostat-off