Toshiba RAS-B10GKVP-E Service Manual page 47

8-2. Outdoor Unit (Inverter Assembly)
RAS-4M27GAV-E, RAS-4M27GACV-E, RAS-3M26GAV-E
Outdoor air temp. Sensor Gas side pipe temp. Sensor
A unit P.M.V.
B unit P.M.V.
C unit P.M.V.
* 1 D unit P.M.V.
2
* 4-Way valve
Outdoor
fan
motor
Compressor
NOTE) ∗1 : 4 unit multi model only.
Tel: 01823 665660
Heronhill - for all your Toshiba requirements
Suction 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
∗2 : Heat pump model only.
www.heronhill.co.uk
2
*
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
• PWM synthesis function
10MHz
• Input current release control
• IGBT over current detect control
High power factor
correction circuit
• High power factor correction control
• Signal communication to MCU
• Output current release control
• A/D converter function
Over current
detect circuit
Gate drive
circuit
– 47 –
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
1
*
220–240V
220V
MCC-1438 (MAIN-P.C. B)
M.C.U
IGBT : Insulated gate bipolar
transistor
Fax: 01823 665807
~
50Hz
~
60Hz