Daikin FTKS50BVMB, Service Manual

Page: 139 / 456

Indoor Unit (RA Models) SiEN18-622
126 Function
7.9 INTELLIGENT EYE (Wall Mounted Type Only)
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 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 microcomputer doesn’t have a signal from the sensor in 20 minutes, it judges that
nobody is in the room and operates 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.)
H
1 In case of Fan mode, the fan speed reduces by 50 rpm.
1 s ec
sa mpling (20m s ec)
High
Low
ON
OFF
S en s or o u tp u t
(H u m a n motion)
(R2 8 21)
If the s en s or detect s the o u tp u t s 10 time s / s ec.
or more, it j u dge s h u m a n s exi s t.
H u m a n detection
s ign a l
ON
OFF
RE S ET.
Cooling : S et temp. + 2°C
He a ting : S et temp. - 2°C
H u m a n detection
s ign a l
20 min. 20 min.
40 min.
M a xHz
Mi nHz
0Hz
ON
OFF
ON
OFF
Oper a tion
OFF
F a n s peed (
H
1)
S et s peed - 50 rpm
S et s peed S et s peed
in c as e of
thermo s t a t-off
Fre qu ency a t s et temp. + 2°C
S et temp.
(R2 8 22)
Remote controller
Intelligent Eye
bu tton
Compre ss or
s peed
The lower limit b y detecting
h u m a n.
(Prohi b ition of thermo s t a t-off)
within 20
min
u te s .