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43. Electrical
connections
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Connection of AHU-0xxSx1 version
DO1
1 2
AI1
AI2
DI1
DI2
MODBUS RTU
(AH-xMxxx)
B -
10 11 12
13 14 15
30
31
40 41
42 43 44
A +
GND
L
N
230V
a
c
Power Supply
16
17
AO1
G
G0
24V
ac
Y
G0
AI3
18
AO2
G0
Y
G
G0
G0
G
19 20
AO3
G0
Y
G0
G
AI3
GN
D
GND
A +
B -
N L
DI1
GND
DI2
AI1
GND
AI2
AO1
GND
COM
DO1
AO2
GND
AO3
1
2
10
11
12
13
14
15
16
17
18
19
20
30
31
40
41
42
43
44
Connection of AHU-1xxSx1 version
DO1
1 2
AI1
AI2
DI1
DI2
MODBUS RTU
(AH-xMxxx)
B -
10 11 12
13 14 15
30
31
32
40 41
42 43 44
DO2
A +
GND
L
N
230V
ac
Power Supply
16
17
AO1
G
G0
24V
a
c
Y
G0
AI3
18
AO2
G0
Y
G
G0
G0
G
N L
DI1
GND
DI2
AI1
GND
AI2
AO1
GND
COM
DO2
DO1
AI3
GND
GND
A +
B -
AO2
1
2
10
11
12
13
14
15
16
17
18
30
31
40
41
42
43
44
32
Connection of AHU-2xxSx1 version
DO1
1 2
AI1
AI2
DI1
DI2
MODBUS RTU
(AH-xMxxx)
B -
10 11 12
13 14 15
30
31
33
40 41
42 43 44
DO2
32
DO3
A +
GND
L
N
230V
ac
Power Supply
16 17
AO1
G
G0
24V
a
c
Y
G0
AI3
G
G0
N L
DI1
GND
DI2
AI1
GND
AI2
AO1
GND
COM
DO3
DO2
DO1
AI3
GN
D
GND
A +
B -
1
2
10
11
12
13
14
15
16
17
30
31
40
41
42
43
44
32
33
