Toshiba RAS-M10YKV-E Service Manual page 26

7-2. Outdoor Unit (Inverter Assembly)
RAS-M18YAV-E
CONTROL BLOK DIAGRAM (Outdoor unit)
MCC-775 (SUB P.C.B)
A unit
send/receive
circuit
Outdoor Heat-
exchanger
temp.sensor
M.C.U
Discharge
• Inverter output frequency control
temp. sensor
• A/D converter function
Suction temp.
• P.M.V. control
sensor
• Discharge temp. control
Gas side pipe
• Error display
temp. sensor
• Signal communication to MCU
Outdoor air
temp. sensor
Driver circuit of P.M.V.
A unit
P.M.V.
P.M.V. : Pulse Modulating Valve
PWM : Pulse Width Modulation
IGBT : Insulated Gate Bipolar Transistor
220–230–240 V ~ 50 Hz
B unit
send/receive
circuit
Noise
filter
Relay
RY04
B unit
P.M.V.
MCC-758 (MAIN P.C.B)
M.C.U
• PWM synthesis function
• Input current release control
• IGBT over-current detect control
• Outdoor fan control
• High power factor correction control
• Signal communication to MCU
High power factor Over current
correction circuit detect circuit
Converter
Input current
(AC DC)
Sensor
Rotor position
detect circuit
Rotor position
detect circuit
Gate drive
circuit
Over current
detect circuit
Gate drive
circuit
Over current Inverter
sensor (DC AC)
Over current Inverter
Compressor
sensor (DC AC)
4 way valve
Outdoor
fan motor