Main Functions Si18-201
90 Main Functions
1.1.21 Intelligent Eye
For FTK(X)25/35 J
Series Only
Outline
The function that detects existence of humans in the air-conditioned room and reduces the
capacity when no humans are available in the room in order to save electricity by means of a
human motion sensor.
Processing 1. Detection method by human motion sensor
"
This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
"
A micro computer 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 20msec.× 10 = 100msec.), it
judges human is in the room as the motion signal is ON.
2. The motions (for example: in cooling)
"
When a micro computer doesn’t have a signal from the sensor in 20 minutes, it judges that
no body is in the room and turns off the human detection LED, operating the unit in
temperature sifted 2°C from the set temperature. (Cooling : 2°C higher, Dry: 1°C higher and
Auto : according to the operation mode at that time.)
★
1 In case of Fan mode, the fan speed reduces by 50 rpm.
If the sensor detects the outputs 10 times/sec.
or more, it judges humans are available.
1sec
sampling (20msec)
High
Low
ON
OFF
Sensor output
(Human motion)
Human detection
signal
(RL019)
ON
OFF
RESET.
C/O Set temp. + 2˚C
H/P Set temp. - 2˚C
Human detection
signal
20 min. 20 min.
within 20
minutes.
40 min.
MaxHz
MinHz
0Hz
Compressor
speed
The lower limit by detecting
human.
(Prohibition of thermostat-off)
ON
OFF
ON
OFF
Human motion
detection LED
Remote controller
human motion
detection signal
sensor button
ON
OFF
Operation
OFF
Fan speed (
H
1)
Set speed - 50 rpm
Set speed Set speed
in case of
thermostat-off
Frequency at set temp. + 2˚C
Set temp.
(RL020)
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