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FILE NO. SVM-03008
7-2. Outdoor Unit (Inverter Assembly)
220 − 240 V
50/60 Hz
MICRO-COMPUTER BLOCK DIAGRAM
Over current
sensor
Driver circuit
of P.M.V.
Over current
sensor
Heat exchanger
temp.sensor
Suction temp.
sensor
Outdoor air
temp. sensor
Discharge
temp. sensor
Inddor unit
send/receive
circuit
Relay
circuit
Noise
Filter
Converter
(AC → DC)
Clock
frequency
16MHz
High Power
factor Correction
circuit
Input current
sensor
Rotor position
detect circuit
Rotor position
detect circuit
• PWM synthesis function
• Input current release control
• IGBT over-current detect control
• Outdoor fan control
• High power factor correction control
• Inverter output frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• 4-way valve control
• Signal communication to indoor unit
P.M.V : Pulse Modulating Valve
M.C.U : Micro Control Unit
M.C.U
For INDOOR UNIT
4-way
valve
P.M.V.
Inverter
(DC → AC)
Over current
detect circuit
Gate drive
circuit
Gate drive
circuit
Over current
sensor
Inverter
(DC → AC)
Outdoor
Fan motor
Compressor
MCC813 (P.C.B)
OUTDOOR UNIT