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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.
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Sensor Input Data- BAC01
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Item
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port
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Name
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Vlaue of resistance
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Description
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1
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TH1
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Toe：outdoor ambient temperature
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10K
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temperature range limited and defrost judgement
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2
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TH2
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Tos： total outlet water temperature
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10K
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only for the outdoor connection ,it can be used to adjust the load of the unit
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3
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TH3
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Tr：total return water temperature
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10K
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only for the outdoor connection ,it can be used to adjust the load of the unit
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4
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TH4
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To： outlet water temperature
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10K
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Frost protection
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5
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TH5
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Tcs1：1# suction temperature
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10K
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superheat adjustment
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6
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TH6
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Tdis1：1# discharge temperature
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100K
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discharge superheat protection
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7
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TH7
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Tevi1：1# EVI inlet temperature
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10K
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EVI superheat adjustment
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8
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TH8
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Tevo1：1# EVI outlet temperature
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10K
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EVI superheat adjustment
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9
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TH9
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Tcs2： 2# suction temperature
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10K
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superheat adjustment
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10
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TH10
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Tdis2：2# discharge temperature
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100K
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discharge superheat protection
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11
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TH11
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Tevi2：2# EVI inlet temperature
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10K
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EVI superheat adjustment
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12
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TH12
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Tevo2：2# EVIoutlet temperature
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10K
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EVI superheat adjustment
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Input / Output Ports Data- BAC01
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Item
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Port
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Description
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Remark
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1
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CN1
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RS485 communication port is for slave
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when communication with BMS system (Modbus protocol ),if this unit is treated as slave ,the communication port is CN10 to Master
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2
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CN2
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SLM wired controller port
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review outdoor unit variables and parameter settings
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3
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CN3
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compressor driver communication port
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communication with compressor driver board
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4
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CN5
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Programming port
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it is used for upgraded .
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5
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CN6
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EXV 1 port
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1# the master EXV
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6
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CN7
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EXV 2 port
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2# the master EXV
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7
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CN8
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EXV 3 port
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1# EVI
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8
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CN9
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EXV 4 port
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2# EVI
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9
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CN10
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Master communication port
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when communication with BMS system (Modbus protocol ),if this unit is treated as master ,the communication port is CN1 to slave.
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10
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CN11
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High/low pressure sensor port
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2# high pressure (Pd2)and low pressure (Ps2)sensor
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11
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Ps1
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low pressure sensor port
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1# low pressure sensor
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12
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Pd1
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high pressure sensor port
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1# high pressure sensor
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13
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CN12
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power input
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220VAC
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14
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CN13
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neutral line
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neutral line is for group 1 output
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15
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CN14
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Group1 relays output
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O11，O12，O13，O14( 4-way output )
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16
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CN15
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neutral line
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neutral line is for group 2 output
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17
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CN16
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Group2 relays output
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O21，O22，O23，O24( 4-way output)
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18
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CN17
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neutral line
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neutral line is for group 3 output
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19
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CN18
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Group 3 relays output
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O31，O32，O33，O34 (4-way output)
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20
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CN19
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neutral line
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neutral line is for group 4 toutput
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21
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CN20
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Group 4 relays output
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O41，O42，O43 (3-way output)
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22
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CN21
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Dry contact output
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DO1，DO2 (2-way output ,share the same COM)
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Sensor Input Data- BAC02
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Item
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Port
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Name
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Value
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1
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TH1
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Tr:return temperature sensor
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10K
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2
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TH2
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Tin:fan coil input sensor
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10K
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3
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TH3
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Tou:fan coil outlet sensor
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10K
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4
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TH4-TH6
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reservation
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Input / Output ports Data- BAC02
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Item
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Port
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Description
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Remark
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1
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CN485
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RS485
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Connect to outdoor unit
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2
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CN12
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Transformer initial port
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Connect to transformer
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3
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CN13
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Transformer secondary port
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Connect to transformer
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4
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CN15
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SLM FC264
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HMI
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5
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CN17
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EEV port
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Connect to EEV
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6
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CN19
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AC/DC indoor fan port
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Adjustment RPM of DC FAN
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7
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CN21
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Hi fan speed output
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8
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CN22
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Medium fan speed output
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9
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CN25
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Power supply output
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Connect to AC/DC fan
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10
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CN27
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PUMP output
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11
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L
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L
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Power input 220vac
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12
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N
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N
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Power input 220vac
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ON/OFF Input Data- BAC02
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Item
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Port
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Description
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Remark
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1
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CN6
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Room card function
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OCC function
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2
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CN7
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External fault input
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NO-Fault NC-Normal
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3
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CN9
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Water switch
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Control water switch
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