SiBE121021_C
Function of Indoor Unit (RA Models)
Function and Control
99
1.13 INTELLIGENT EYE Operation
Outline
Wall Mounted Type: FTXG and CTXG Series, FTXS Series 60/71 Class, ATXS Series
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 nobody in the room in order to
save electricity.
Detail
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 operates the unit in temperature shifted from the target
temperature. (Cooling / Dry : 2°C higher, Heating : 2°C lower, Auto : according to the
operation mode at that time.)
★
1 In case of FAN mode, the fan speed reduces by 60 rpm.
Others
For dry operation, you cannot set the temperature with a remote controller, but internally the
target temperature is shifted by 2°C.
1 sec.
sampling (20 msec.)
High
Low
ON
OFF
Sensor output
(Human motion)
(R2821)
Human detection
signal
If the sensor detects the outputs
10 times/sec. or more, it judges
humans exist.
ON
OFF
RESET.
20 min.
20 min.
within 20 min.
ON
OFF
ON
OFF
Operation
OFF
Fan speed (
+
1)
Set speed
Set speed
Target temperature
(R10723)
Remote controller
INTELLIGENT EYE
button
Human detection
signal
