Ð 194 Ð
MODEL RAD-25QH4, RAD-40QH4
12. DC Fan Motor Drive Circuit
Fig. 12-1
¥ Fig. 12-1 shows the indoor DC fan motor drive circuit.
¥ The circuit produces the fan motor drive voltages, 8-33V, from 35V DC supplied from the outdoor unit and
controls the fan motor speed.
¥ Q901 is switched on and off according to the signal at fan PWM output pin
to control the voltage which
is smoothed by C901, L901 to drive the fan motor.
¥ The output voltage is divided by R918, R919 and R920 and is input to divided voltage output pin
; the micro
computer controls the fan PWM output so the output Voltage is set to the specified value. The chopper
frequency of the fan PWM output is 15.7kHz.
¥ The fan current abnormality detector detects the fan motor current usingR101-R105 and COM91 determines
an overcurrent and outputs it to fan current abnormality pin
which is "Hi" duringnormal operation and
"Lo" when overcurrent occrus.
¥ REG3 supplies 5V DC to the DC fan motor.
54
53
60
M
54
CN10
60
53
6
R907
COM901
0V
0V
5V
C905
R905
R904
R903
R901
R101
R102
R103
R104
R105
0V
C909
R916
R917
R915
R914
R912
D901
R913
D902
C901
R902
R921
R920
R919
ZD901
R918
Q903
Q902
R911
C902
5V
L901
ICP2
L101
(Terminal board C)
Q901
35V
5V
R906
4
3
Micro computer
Fan PWM
out put
Fan motor
voltage
feedback
Fan motor
current
abnormal
detection
Terminal board D
RED
YEL
BLU
Indoor DC
fan motor
V
M
1
3
2
Содержание RAD25QH4
Страница 3: ... 0Ω 112 3 4 1 5 6 7 7 8 9 4 DANGER ...
Страница 10: ... SPECIFICATIONS EU1013DD 2 ...
Страница 11: ... EU1013DD 2 ...
Страница 31: ... 0 1 2 3 1 4 5 6 4 7 8 9 4 1 2 1 0 ...
Страница 32: ... 1 2 3 4 1 2 5 6 2 5 6 7 2 28 2 9 9 1 1 2 7 6 8 2 8 ...
Страница 33: ... 0 1 0 1 1 1 0 1 1 2 3 4 0 5 3 6 7 3 6 7 8 3 39 3 3 8 7 9 3 9 2 2 1 2 2 ...
Страница 35: ... 0 1 2 3 2 456 7 0 1 8 9 5 5 8 3 8 5 3 4 4 8 8 3 8 3 3 7 A 3 3B C 9 8 D ...
Страница 37: ... 0 1 2 0 2 1 314 5 6 5 7 8 9 99 5 5 5 0 A 0 0 0 5 7 B 1 9 C D CAUTION D 1 2 5 C C 5 D C 2 D 2 D ...
Страница 41: ... 0 1 234 1 0 1 4 1 5 1 6 7 8 5 1 1 5 5 5 5 9 3 8 3 1 1 1 5 1 5 1 A2 B C A C D D EB A2 B C1 5 1 5 9 F G H 5 1 ...
Страница 87: ... 012 34 12 3 5156 7 761 8 2 8 2 1 9 3 71 8 0 5 0 8 7 1 6 7 5 15 8 8 012 34 12 3 1 611 4 1 611 8 1 M 1 611 A B ...
Страница 127: ... 0 1 22 3 3 4 567 89 5 8 8 3 567 89 ...
Страница 152: ... 0 1 0 2 3 5 6 1 7 6 6 3 5 3 5 8 9 9 ...
Страница 154: ... A 0 11 2 3 1 1 3 1 3 4 4 5 A 6 8 3 1 11 1 1 1 5 A 6 9 ...
Страница 162: ... Mode Refroidissement 0 1 2 3 4 55 6 7 85 9 6 7 A 75 1 B B 6 A 75 1 B B C 9 ...
Страница 183: ... 0 1 2 3 4 0 3 4 5 1 5 5 6 7 8 1 5 1 9 1 0 5 1 9 9 5 ...
Страница 184: ... 01 0 2 3 4 3 0 5 3 3 0 3 0 067 8 3 0 7 3 0 3 9 3 9 1 9 1 0 A 0 B ...
Страница 188: ... 0 2 2 3 4 567 3 4 567 3 4 567 3 4 567 8 9 2 8 9 2 4 6 0 0 6 0 4 ...
Страница 194: ... 1 2 3 4 5 6 7 6 6 7 6 8 9 9 9 8 9 9 9 8 9 9 5 9 9 5 9 9 A A 2 3 4 9 9 ...
Страница 200: ... 0 0 1 0 2 0 2 3 2 15 1 6 7 6 6 6 8 8 9 5 6 9 5 6 6 5 6 6 5 6 8 9 5 5 8 9 5 5 6 9 5 5 5 5 A B 5 55 C ...
Страница 203: ... 0 1 0 0 2 0 3 3 4 3 3 5 5 0 0 0 0 5 5 0 5 0 1 32 6 6 6 76 0 8 9 0 0 0 0 ...
Страница 204: ... 0 1 2 3 4 5 6 2 2 3 7 7 1 3 7 2 2 8 7 1 2 29 9 5 6 2 3 2 2 2 29 9 5 9 0 3 7 2 2 4 0 0 3 6 ...
Страница 207: ... 0 1 2 1 0 1 3 41 3 41 1 2 1 ...
Страница 208: ... 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 3 455 1 2 3 455 1 6 6 47 3 8 49 3 47 3 4 3 4 3 4 3 49 3 ...
Страница 211: ... 0 1 23 4 1 03 4 1 4 1 5 6 4 7 8 7 7 8 7 7 8 7 7 8 7 5 0 9 0 9 5 5 5 5 5 5 5 5 5 5 ...
Страница 212: ... 0 1 0 234 0 5 134 5 0 0 5 0 0 5 6 7 8 9 8 8 9 8 8 9 8 8 9 8 6 1 1 0 0 ...
Страница 214: ... 7 Circuit de contr le facteur de puissance 0 ...
Страница 217: ... 0 0 1 2 3 4 ...
Страница 221: ... AT STARTING OPERATION 0 0 OTHERS 1 2 1 3 2 0 0 ...
Страница 226: ... 0 0 1234 5 5 6 7 8 8 0 0 0 7 0 9 0 0 2 0 50 0 0 0 0 0 0 9 0 0 0 0 0 0 0 5 0 0 0 0 0 0 ...
Страница 228: ... FIXATION 0 1 2 3 1 40 0 1 2 3 1 1 6 2 3 1 22 7 8 9 2 3 1 6 8 2 40 0 2 3 1 0 0 6 ...
Страница 230: ... 01234 54 567 8 94 4 4 8 8 2 8 8 7 FIXATION FIXATION ...
Страница 232: ... 0 1 2 3 4 1 1 6 7 8 7 7 9 8 0 3 4 8 FIXATION 3 1 3 1 ...
Страница 234: ... FIXATION 0 1 0 234 5 2 4 6 55 2 4 274 8 2 4 9 5 2 4 2 4 5 8 5 8 5 9 5 9 5 8 5 8 1 2 4 5 2 4 5 0 2 4 2 4 5 5 5 ...
Страница 236: ... FIXATION 0 1 2 2 3 4 5 6 ...
Страница 249: ... 0 1 1 234 354 64 234 354 74 8 2349 354 4 49 64 49 64 239 354 74 7 1 ...
Страница 280: ...Ð 307 Ð MODEL RAD 25QH4 RAD 40QH4 MODELE 67 11 ...
Страница 293: ...TC NO 0757EF RAF 25NH4 RAF 50NH4 RAD 25QH4 RAD 40QH4 RAM 70QH4 RAM 80QH4 ...