Carrier 39cvur018-703, Руководство по обслуживанию, Страница: 23 / 94

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2
2
–
8-2. Outdoor Unit (Inverter Assembly)
Dr
iv
er circuit
of PMV
Cloc
k
frequency
4MHz
Con
v
er
ter
(A
C
→
DC)
In
v
er
ter
(DC
→
AC
)
In
v
er
ter
(DC
→
AC
)
Input current
sensor
High P
o
w
er
factor Correction
circuit
MICR
O-COMPUTER BLOCK DIA
GRAM
F
or INDOOR UNIT
220-240 V ~50Hz 220-230 V ~60Hz
Suction
temp
. sensor
Outdoor air
temp
. sensor
Discharge
temp
. sensor
Indoor unit
send/receiv
e
circuit
Noise
Filter
MCC5009 (P
.C.B)
•
PWM synthesis function
•
Input current release control
•
IGBT o
v
er-current detect control
•
Outdoor f
an control
•
High po
w
er f
actor correction control
•
In
v
er
ter output frequency control
•
A/D con
v
er
ter function
•
PMV control
•
Discharge tem
p
.
control
•
Signal communication to indoor unit
PMV
: Pulse Motor
V
alv
e
M.C
.U
.:
Micro Control Unit
Outdoor
F
an motor
Compressor
OUTDOOR UNIT
PMV
Gate dr
iv
e
circuit
Current
detect
Current
detect
Gate dr
iv
e
circuit
M.C
.U
.
FILE NO. SVM-12052