Toshiba RAS-M16PKVP-E - Outdoor Unit (Inverter Assembly)

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8-2. Outdoor Unit (Inverter Assembly)
RAS-5M34UAV-E
A unit P.M.V.
• Inverter outdoor frequency control
• A/D converter function
• P.M.V. control
• Processing (Temp. processing)
• Error display
• Serial signal communication with indoor unit
• Signal communication with main P.C. board
• Function select
M.C.U
Discharge temp. sensorGas side pipe temp. sensor Suction temp. sensor Evaporator temp. sensor Outdoor air temp. sensor
MCC-5071 (CONTROL P.C. B)
MCC-1571 (MAIN P.C. B)
220–240V ~50Hz
220V
~60Hz
Driver
circuit of
P.M.V.
B unit P.M.V.
C unit P.M.V.
D unit P.M.V.
E unit P.M.V.
Relay circuit
4-way valve
Function select
P.M.V : Pulse motor valve
PWM : Pulse width modulation
IPM : Intrlligent power module
Signal communication
Noise filter
High power factor
correction circuit
Converter
(AC → DC)
Gate drive
circuit
Inverter
(DC → AC)
Output current
sensor
Output current
sensor
Input current
sensor
E unit serial signal
communication circuit
D unit serial signal
communication circuit
C unit serial signal
communication circuit
B unit serial signal
communication circuit
A unit serial signal
communication circuit
Clock frequency
oscillator circuit
20 MHz
Clock frequency
oscillator circuit
20 MHz
Clock frequency
oscillator circuit
8 MHz
Gate drive
circuit
Inverter
(DC → AC)
• Signal communication with
control P.C. board
• 4-way valve control
M.C.U 2
• PWM synthesis function
• Input current release control
• IPM over current detect control
• High power factor correction control
• Signal communication with
control P.C. board
• Fan motor control
• Compressor motor control
M.C.U 1
Compressor
Outdoor
fan motor