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Outdoor Unit (Inverter Assembly) - Toshiba RAS-M10PKVP-E Service Manual

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8-2. Outdoor Unit (Inverter Assembly)

RAS-3M26GAV-E1, RAS-4M27GAV-E1
Outdoor air temp. sensor
A unit P.M.V.
B unit P.M.V.
C unit P.M.V.
D unit P.M.V.
*
1
4-Way valve
Outdoor
fan
motor
Compressor
NOTE) ∗1 : 4 unit multi model only.
Gas side pipe temp. sensor
Driver
circuit of
P.M.V.
Relay circuit
Rotor position
detect circuit
Inverter
Gate drive
(DC → AC)
circuit
Over current
Over current
sensor
detect circuit
Noise filter
Input current
sensor
Converter
(AC → DC)
Over current
sensor
Inverter
(DC → AC)
Output current
sensor
P.M.V : Pulse motor valve
PWM : Pulse width modulation
Suction temp. sensor
Evaporator temp. sensor
M.C.U
• Inverter outdoor frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• Error display
• Signal communication to MCU
• PWM synthesis function
Clock frequency
oscillator circuit
16MHz
Signal communication
to MCU
Clock frequency
oscillator circuit
10MHz
High power factor
correction circuit
Over current
detect circuit
Gate drive
circuit
– 49 –
Discharge temp. sensor
MCC-818 (SUB-P.C. B)
A unit
send/receive
circuit
B unit
send/receive
circuit
C unit
send/receive
circuit
D unit
send/receive
circuit
220–240V
MCC-1438 (MAIN-P.C. B)
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
IGBT : Insulated gate bipolar
transistor
1
*
~
50Hz
~
220V
60Hz

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