Circuit Functions - Daikin VAM 150FAVE Service Manual

SiE71-202
1.2

Circuit Functions

Classification
Input/output
Output
Input
Peripheral
Parts
Microcomputer Microcomputer reset circuit
Power Supply
Circuit Operations
Circuit
Central data transmission interface
Remote control data transmission interface
Air conditioner link operation
KRP50-2 interface
Relay drive circuit
Fan motor, damper motor relay
Thermistor interface
Airflow rate setting switch interface
External input interface
Damper limit switch interface
Control microcomputer
EEPROM
Microcomputer oscillation circuit
Power transformer
Power supply circuit
Circuit Operations
Function
Used by centralized control equipment for
operation control. Allows control of up to 64
groups of air conditioners and heat recovery
ventilation units. Use of KRP2A61 allows zone
link operation.
Use of dedicated LCD remote controller allows
control of up to 16 heat recovery ventilation
units. Also used for linked operation of air
conditioners of 2 groups.
Connects to remote control line of air
conditioner for linked operation.
Can be used to output signals of operating
condition and abnormalities to external
equipment or to connect humidifier via
KRP50-2.
Supplies drive voltage to relay coils.
Power supply relay for fan motor and damper
motor.
Uses thermistor (temperature sensor) to detect
inside and outside temperatures.
Used to set airflow rate of main unit when
dedicated remote controller is not used.
Used to control main unit with external contact
point. (Freshup, external link operation, etc.)
Sends signal of limit switch condition to
microcomputer for damper motor cam
positioning.
Controls entire equipment by varying output
according to input condition.
Stores operating condition and address data.
Resets microcomputer when power is turned
on.
Generates clock frequency for microcomputer
operation.
Produces power supply of approx. 26 VAC
from 220-240 VAC.
Supplies direct currents (16 VDC, 5 VDC) to
control circuits.
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