Applied Control And Functions (Including Circuit Configuration) - Toshiba VN-M150HE Service Manual

7
Applied Control and Functions
(Including Circuit Configuration)
7-1. Heat Exchanger Controller Block Diagram
Air to Air Heat Exchanger
1
DC20V
DC12V
DC5V
Damper
motor
Supplying
fan motor
Exhausting
fan motor
Power
supply circuit
Main (sub) center remote controller
(up to 2 units)
Display
LCD
Display
MCU
LCD
EEPROM
Remote controller
communication circuit
A B
Remote controller
communication circuit
Fan motor
MCU
relay circuit
Fan motor
relay circuit
External External
output input
• Driving • Remote
• Damper controller
• Abnormal/ invalid
Bypass • Low/High
AC
mode • Bypass synchronous
mode/Heat
signal input
Exchange
circuit
mode
• Start/Stop
R S
Power supply
220-240V~, 50 Hz
220V~, 60 Hz
Schedule timer
(when in weekly timer mode)
Display
LCD
Function setting
Key switch
CN2 CN1
*1
DC5V
Power
Power
supply
supply
circuit
circuit
2
EEPROM
TRA sensor
TOA sensor
Switch
• Indoor unit
address switching
• Group address
switching
• Central control
address switching
• Pulse/Static
switching
BUS
communication
circuit
R
Power
supply
Central
control
28
LCD
driver
Function setting
MCU
Key switch
DC5V
Rechargeable
battery
3
A B A B
Up to 8 units can be connected.
*1 A weekly timer cannot be
connected to a subremote
controller.
Same Same
as left as left
S R S
Power
supply