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HAC-116 < SYSTEM DESCRIPTION > [WITH MONOCHROME DISPLAY] AUTOMATIC AIR CONDITIONER SYSTEM FRESH AIR ( ) SWITCH • When the FRE switch is ON, the FRE switch indicator is turned ON, and air inlet is set to FRE. DUAL MODE SWITCH • When the DUAL switch indicator is ON, the driver side and passenger side temperature can each be set independently. • When the DUAL switch indicator is OFF, the driver side outlet and setting temperature are applied to both sides. Air Conditioner LAN Control System INFOID:0000000010051114 The LAN (Local Area Network) system consists of the A/C auto amp., the mode door motor, the air mix door motors and the intake door motor. A configuration of these components is as shown in the figure below. SYSTEM CONSTRUCTION A small network exists between the A/C auto amp., the mode door motor, the air mix door motors and the intake door motor. The A/C auto amp. and motors are connected by data transmission lines and motor power supply lines. The LAN network is built through the ground circuits of each door motor. Addresses, motor opening angle signals, motor stop signals and error checking messages are all transmitted through the data transmission lines connecting the A/C auto amp. and each door motor. The following functions are contained in LCUs built into the mode door motor, the air mix door motors and the intake door motor. • Address • Motor opening angle signals • Data transmission • Motor stop and drive decision • Opening angle sensor (PBR function) • Comparison • Decision (A/C auto amp. indicated value and motor opening angle comparison) Operation The A/C auto amp. receives data from each of the sensors. The A/C auto amp. sends mode door, the air mix door and the intake door opening angle data to the mode door motor LCU, the air mix door motor LCUs and the intake door motor LCU. The mode door motor, the air mix door motors and the intake door motor read their respective signals accord- ing to the address signal. Opening angle indication signals received from the A/C auto amp. and each of the motor position sensors is compared by the LCUs in each door motor with the existing decision and opening AWIIA1061GB AWIIA1062GB |