![background image](http://html1.mh-extra.com/html/abb/ac-31/ac-31_assembly-and-operation-manual_3301544111.webp)
Table 59: Pin assignment AO (X2)
Connector / Terminal
Pin
Assignment / Signal
X2 / 2.0
4
AO523 / O0+
X2 / 1.0
5
AO523 / O0- (AGND)
X2 / 2.1
6
AO523 / O1+
X2 / 1.1
7
AO523 / O1- (AGND)
X2 / 2.2
8
AO523 / O2+
X2 / 1.2
9
AO523 / O2- (AGND)
X2 / 2.3
10
AO523 / O3+
X2 / 1.3
11
AO523 / O3- (AGND)
Table 60: Pin assignment AO (X3)
Connector / Terminal
Pin
Assignment / Signal
X3 / 2.4
12
AO523 / -
X3 / 1.4
13
AO523 / O4- (AGND)
X3 / 2.5
14
AO523 / -
X3 / 1.5
15
AO523 / O5- (AGND)
X3 / 2.6
16
AO523 / -
X3 / 1.6
17
AO523 / O6- (AGND)
X3 / 2.7
18
AO523 / -
X3 / 1.7
19
AO523 / O7- (AGND)
Table 61: Pin assignment 24 V DC 9W (X4)
Connector / Terminal
Pin
Assignment / Signal
X4 / L+
20
L+
X4 / L+
21
L+
X4 / M
22
M
X4 / M
23
M
X4 / FE
24
FE
Table 62: Pin assignment DI (X5)
Connector / Terminal
Pin
Assignment / Signal
X5 / +
25
IN+
X5 / -
26
IN- (electrically isolated earth)
Table 63: Pin assignment AO (X6)
Connector / Terminal
Pin
Assignment / Signal
X6 / 4.0
27
AO523 / O8+
X6 / 3.0
28
AO523 / O8- (AGND)
X6 / 4.1
29
AO523 / O9+
X6 / 3.1
30
AO523 / O9- (AGND)
AC31 Adapters
Replacement devices: I/O modules > Replacement device 07AC91-AD
2018/09/24
3ADR010122, 8, en_US
111