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5
INPUTS AND OUTPUTS
This chapter contains a list of the controller I/O (inputs and outputs). Inputs and outputs are used according to
the actual configuration of the unit.
5.1.1 List of inputs and outputs
The table below lists all the inputs and outputs featured in the controller.
Main board
Expansion board
Analogu
e inp
uts
U1
Differential pressure in air delivery line to fans
U2
Differential pressure in air return line from fans
U3
Pressure in circuit 1
U4
Temperature in air delivery line
U5
Temperature in air return line (ambient)
U6
Pressure in circuit 2
U7
Humidity in air return line (ambient)
U8
External air temperature
U9
Air quality probe (CO2)
U10
External air relative humidity
Digital input
s
ID 1
Freeze protection
ID 2
Dirty filters alarm
ID 3
Summer/Winter
ID 4
Main fan overload switch
ID 5
Remote ON/OFF
ID 6
Thermal overload switch in heater 1
ID 7
Low pressure alarm in circuit 1 from pressure switch
ID 8
Overload switch in compressor 1 (comp. 1, circuit 1)
ID 9
Low pressure alarm in circuit 2 from pressure switch
ID 10
Overload switch in compressor 2 (comp. 2, circuit 1)
ID 11
Overload switch in heater 2
ID 12
Air flow switch
ID 13
High pressure alarm in circuit 1 from pressure switch
ID 14
High pressure alarm in circuit 2 from pressure switch
ID 15
Overload switch in compressor 3 (comp. 1, circuit 2)
ID 16
Overload switch in compressor 4 (comp. 2, circuit 2)
ID 17
Serious external alarm
ID 18
External warning message
Digital outp
uts
NO1
Compressor 1, circuit 1
NO2
Condenser fan in circuit 1
NO3
Compressor 2, circuit 1
NO4
Compressor 2, circuit 2
NO5
Heater in condensate tray
NO6
Compressor 1, circuit 2
NO7
Main fan
NO8
Alarm
NO9
Heater 1
NO10
Heater 2
NO11
Auxiliary digital output
NO12
Cycle reversing valve in circuit 1
NO13
Unit in heat pump mode
NO14
Condenser fan in circuit 2