6.APPENDIX
Connections explanation
No.
Symbol
1
OUT1
2
OUT2
3
OUT3
4
OUT4
5
OUT5
6
AC-L
7
AC-N
8
AI/DI01
9
AI/DI02
10
AI/DI03
11
AI/DI04
12
AI/DI05
13
AI/DI06
14
AI/DI07
15
AI/DI08
16
AI/DI09
17
AI/DI10
18
AI/DI11
19
AI12(50K)
20
0_5V_IN
21
PWM_IN
22
PWM_OUT
23
0_10V_OUT
24
+5V
25
+12V
26
GND
27
485_B1
28
485_A1
29
12V
30
GND
31
485_B2
32
485_A2
33
12V
34
Cn9
35
GND
36
485_B3
37
485_A3
38
12V
39
FUSE
17
Compressor ( output 220-230VAC)
Water pump ( output 220-230VAC)
4-way valve ( output 220-230VAC)
High speed of fan ( output 220-230VAC)
Low speed of fan (output 220-230VAC)
Live wire ( input 220-230VAC)
Neutral wire ( input 220-230VAC)
Emergency switch (input)
Water flow switch (input)
System low pressure (input)
System high pressure (input)
System suction temperature (input)
Water input temperature (input)
Water output temperature ( input )
System fan coil temperature( input)
Ambient temperature( input)
Mode switch / coil 2 temperature(input)
Master-slave machine switch / Antifreeze temperature(input)
System Exhaust temperature (input)
Compressor current detection/Pressure sensor(input)
Master-slave machine switch / Feedback signal of EC fan ( input )
AC fan control ( output )
EC fan control ( output )
+5V ( output )
+12V ( output )
Frequency conversion board communications
Color line controller communication
Electronic expansion valve
The port for centralized control
T5AL250V
Meaning