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Bandary DC inverter air conditioning inverter circuit board DC motor speed electronic control board

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Outdoor Unit BAC01

Introduction

BAC01 Series control module is designed for controlling chiller type or heat pump with DC inverter compressor driver control board.

Sensor Input Data- BAC01
	Item	port	Name	Vlaue of resistance	Description
	1	TH1	Toe：outdoor ambient temperature	10K	temperature range limited and defrost judgement
	2	TH2	Tos： total outlet water temperature	10K	only for the outdoor connection ,it can be used to adjust the load of the unit
	3	TH3	Tr：total return water temperature	10K	only for the outdoor connection ,it can be used to adjust the load of the unit
	4	TH4	To： outlet water temperature	10K	Frost protection
	5	TH5	Tcs1：1# suction temperature	10K	superheat adjustment
	6	TH6	Tdis1：1# discharge temperature	100K	discharge superheat protection
	7	TH7	Tevi1：1# EVI inlet temperature	10K	EVI superheat adjustment
	8	TH8	Tevo1：1# EVI outlet temperature	10K	EVI superheat adjustment
	9	TH9	Tcs2： 2# suction temperature	10K	superheat adjustment
	10	TH10	Tdis2：2# discharge temperature	100K	discharge superheat protection
	11	TH11	Tevi2：2# EVI inlet temperature	10K	EVI superheat adjustment
	12	TH12	Tevo2：2# EVIoutlet temperature	10K	EVI superheat adjustment

Input / Output Ports Data- BAC01
	Item	Port	Description	Remark
	1	CN1	RS485 communication port is for slave	when communication with BMS system (Modbus protocol ),if this unit is treated as slave ,the communication port is CN10 to Master
	2	CN2	SLM wired controller port	review outdoor unit variables and parameter settings
	3	CN3	compressor driver communication port	communication with compressor driver board
	4	CN5	Programming port	it is used for upgraded .
	5	CN6	EXV 1 port	1# the master EXV
	6	CN7	EXV 2 port	2# the master EXV
	7	CN8	EXV 3 port	1# EVI
	8	CN9	EXV 4 port	2# EVI
	9	CN10	Master communication port	when communication with BMS system (Modbus protocol ),if this unit is treated as master ,the communication port is CN1 to slave.
	10	CN11	High/low pressure sensor port	2# high pressure (Pd2)and low pressure (Ps2)sensor
	11	Ps1	low pressure sensor port	1# low pressure sensor
	12	Pd1	high pressure sensor port	1# high pressure sensor
	13	CN12	power input	220VAC
	14	CN13	neutral line	neutral line is for group 1 output
	15	CN14	Group1 relays output	O11，O12，O13，O14( 4-way output )
	16	CN15	neutral line	neutral line is for group 2 output
	17	CN16	Group2 relays output	O21，O22，O23，O24( 4-way output)
	18	CN17	neutral line	neutral line is for group 3 output
	19	CN18	Group 3 relays output	O31，O32，O33，O34 (4-way output)
	20	CN19	neutral line	neutral line is for group 4 toutput
	21	CN20	Group 4 relays output	O41，O42，O43 (3-way output)
	22	CN21	Dry contact output	DO1，DO2 (2-way output ,share the same COM)

Indoor Unit

Introduction

Indoor unit BAC02 is designed to communicate with outdoor unit BAC01, then transfer the user setting mode, Setting temperature, room temperature to outdoor unit, and receive the running status from outdoor unit.

Sensor Input Data- BAC02
	Item	Port	Name	Value
	1	TH1	Tr:return temperature sensor	10K
	2	TH2	Tin:fan coil input sensor	10K
	3	TH3	Tou:fan coil outlet sensor	10K
	4	TH4-TH6	reservation

Input / Output ports Data- BAC02
	Item	Port	Description	Remark
	1	CN485	RS485	Connect to outdoor unit
	2	CN12	Transformer initial port	Connect to transformer
	3	CN13	Transformer secondary port	Connect to transformer
	4	CN15	SLM FC264	HMI
	5	CN17	EEV port	Connect to EEV
	6	CN19	AC/DC indoor fan port	Adjustment RPM of DC FAN
	7	CN21	Hi fan speed output
	8	CN22	Medium fan speed output
	9	CN25	Power supply output	Connect to AC/DC fan
	10	CN27	PUMP output
	11	L	L	Power input 220vac
	12	N	N	Power input 220vac

ON/OFF Input Data- BAC02
	Item	Port	Description	Remark
	1	CN6	Room card function	OCC function
	2	CN7	External fault input	NO-Fault NC-Normal
	3	CN9	Water switch	Control water switch