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8-2. Outdoor Unit (Inverter Assembly)
RAS-4M23SAV-E, RAS-4M23SACV-E
NOTE) ∗1 : Heat pump model only.
A unit P.M.V.
B unit P.M.V.
C unit P.M.V.
D unit P.M.V.
Noise filter
4-Way valve Relay circuit
*
1
*
1
• Inverter outdoor frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• Error display
• Signal communication to MCU
• PWM synthesis function
M.C.U
• PWM synthesis function
• Input current release control
• IGBT over current detect control
• High power factor correction control
• Signal communication to MCU
• Output current release control
• A/D converter function
M.C.U
Discharge
temp. Sensor
Gas side
pipe temp. Sensor
Suction
temp. Sensor
Evaporator
temp. Sensor
Outdoor air
temp. Sensor
MCC-818 (SUB-P.C. B)
MCC-1438 (MAIN-P.C. B)
220–240V ~50Hz
220V
~60Hz
Driver circuit
of P.M.V.
P.M.V : Pulse motor valve
PWM : Pulse width modulation
IGBT : Insulated gate bipolar
transistor
A unit send/
receive circuit
B unit send/
receive circuit
C unit send/
receive circuit
D unit send/
receive circuit
Inverter
(DC
®
AC)
Over current
detect circuit
Clock frequency
oscillator circuit
10MHz
High power factor
correction circuit
Gate
drive circuit
Over current
detect circuit
Input current
sensor
Converter
(DC
®
AC)
Over current
sensor
Inverter
(DC
®
AC)
Output current
sensor
Signal communication
to MCU
Gate
drive circuit
Clock frequency
oscillator circuit
16MHz
Over current
sensor
Rotor position detect circuit
Compressor
Outdoor
fan motor
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