5.2 I/O Connections
The following drawing illustrates the layout of the I/O connections of the electronic board:
The following table illustrates the meaning of CONNECTOR 1:
Part
Meaning
1
Digital output DO1: common [C1]
2
Digital output DO1 (8 A SPDT): normally open [NO1]
3
Digital output DO1 (8 A SPDT): normally closed [NC1]
The following table illustrates the meaning of CONNECTOR 2:
Part
Meaning
1
Digital output DO2 (8 A SPST): normally open [NO2]
2
Relay digital output DO2 and D03: common [C23]
3
Digital output DO3 (8 A SPST): normally open [NO3]
4-5
Digital output DO4 (16 A SPDT): board supply common (115-230 VAC isolated) [L-C4]
6
Digital output DO4 (16 A SPDT): normally open [NO4]
7
Board supply (115-230 VAC isolated) [N]
The following table illustrates the meaning of CONNECTOR 3:
Part
Meaning
1
Analogue output AO1 (0-10 V/ PWM)
2
Analogue input IN1 (DI / NTC / 4-20 mA / 0-10 V / 0-5 V)
3
Analogue input IN2 (DI / NTC / 4-20 mA / 0-10 V / 0-5 V)
4
Analogue input IN3 (DI/NTC)
5
Analogue input IN4 (DI/NTC)
6
Analogue input IN5 (DI/NTC)
25
ENG
Function
Alarm
Alarm
Alarm
Function
Evaporator fan
Condensing fan
Compressor
Function
Condensation temperature /
pressure
Intake sensor (internal
temperature) REGULATION
SENSOR
External temperature sensor
Generic alarm (door
microswitch contact)
Phase sequence relay