Outdoor Unit (Inverter Assembly) - Toshiba RAS-B10SKVP-E Service Manual

8-2. Outdoor Unit (Inverter Assembly)

RAS-3M18SAV-E, RAS-3M18SACV-E
Outdoor air
temp. Sensor
A unit P.M.V.
B unit P.M.V.
C unit P.M.V.
1 4-Way valve
*
Outdoor
fan motor
Compressor
NOTE) ∗1 : Heat pump model only.
Tel: 01823 665660
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Gas side
pipe temp. Sensor
• Inverter outdoor frequency control
• A/D converter function
Driver circuit
of P.M.V.
• P.M.V. control
• Discharge temp. control
• Error display
• Signal communication to MCU
• PWM synthesis function
Relay circuit
Rotor position detect circuit
®
Inverter
Gate
(DC AC)
drive circuit
Over current Over current
sensor detect circuit
Noise filter
Input current
sensor
®
Converter
(DC AC)
Over current
sensor
®
Inverter
(DC AC)
Output current
sensor
P.M.V : Pulse motor valve
PWM : Pulse width modulation
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1
*
Suction Evaporator
temp. Sensor temp. Sensor
M.C.U
Clock frequency
oscillator circuit
16MHz
Signal communication
to MCU
Clock frequency
oscillator circuit
10MHz
• PWM synthesis function
High power factor
correction circuit
• Input current release control
• IGBT over current detect control
• High power factor correction control
Over current
• Signal communication to MCU
detect circuit
• Output current release control
Gate
drive circuit
• A/D converter function
– 31 –
Discharge
temp. Sensor
MCC-818 (SUB-P.C. B)
A unit send/
receive circuit
B unit send/
receive circuit
C unit send/
receive circuit
~
220–240V 50Hz
~
220V 60Hz
MCC-1438 (MAIN-P.C. B)
M.C.U
IGBT : Insulated gate bipolar
transistor
Fax: 01823 665807