SiE00-01
Circuit Operations
Circuit Operations
31
1.2
Circuit Functions
Classification
Circuit
Function
Input/output
Central data transmission interface
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.
Remote control data transmission interface
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.
Air conditioner link operation
Connects to remote control line of air
conditioner for linked operation.
Output
KRP50-2 interface
Can be used to output signals of operating
condition and abnormalities to external
equipment or to connect humidifier via KRP50-
2.
Relay drive circuit
Supplies drive voltage to relay coils.
Fan motor, damper motor relay
Power supply relay for fan motor and damper
motor.
Input
Thermistor interface
Uses thermistor (temperature sensor) to detect
inside and outside temperatures.
Airflow rate setting switch interface
Used to set airflow rate of main unit when
dedicated remote controller is not used.
External input interface
Used to control main unit with external contact
point. (Freshup, external link operation, etc.)
Damper limit switch interface
Sends signal of limit switch condition to
microcomputer for damper motor cam
positioning.
Peripheral
Parts
Control microcomputer
Controls entire equipment by varying output
according to input condition.
EEPROM
Stores operating condition and address data.
Microcomputer Microcomputer reset circuit
Resets microcomputer when power is turned
on.
Microcomputer oscillation circuit
Generates clock frequency for microcomputer
operation.
Power Supply
Power transformer
Produces power supply of approx. 26 VAC
from 220-240 VAC.
Power supply circuit
Supplies direct currents (16 VDC, 5 VDC) to
control circuits.
Summary of Contents for VAM 150FJVE
Page 5: ...SiE00 01 iv Table of Contents ...
Page 7: ...Introduction SiE00 01 vi 1 1 1 Cautions in Operation and Maintenance ...
Page 8: ...SiE00 01 Introduction vii ...
Page 13: ...General Constructions SiE00 01 4 General Constructions ...
Page 23: ...Operation SiE00 01 14 Operation ...
Page 29: ...Maintenance SiE00 01 20 Maintenance ...
Page 41: ...Circuit Operations SiE00 01 32 Circuit Operations ...
Page 73: ...Supplementary Explanation SiE00 01 64 Supplementary Explanation ...
Page 74: ...SiE00 01 Appendix 65 Part 9 Appendix 1 Appendix 66 1 1 Wiring Diagram 66 ...
Page 76: ...SiE00 01 Appendix Appendix 67 VAM1500FJVE VAM2000FJVE ...
Page 77: ...Appendix SiE00 01 68 Appendix ...
Page 81: ...SiE00 01 iv Index ...