ABB AC31 Assembly And Operation Manual page 126

AC31 Adapters
Replacement devices: I/O modules > Replacement device 07AC91-AD2
Connector / Terminal
X6 / 4.2
X6 / 3.2
X6 / 4.3
X6 / 3.3
Table 75: Pin assignment AO (X7)
Connector / Terminal
X7 / 4.4
X7 / 3.4
X7 / 4.5
X7 / 3.5
X7 / 4.6
X7 / 3.6
X7 / 4.7
X7 / 3.7
The signals Ix- and Ox- are internally linked to an AGND area. The potential AGND is con-
nected to the potential M via PTC resistors. Potential difference AGND to M ± 1 V maximal.
To enable wire-break detection, each input is internally pulled to "plus" by means of a high-impe-
dance resistor. As a result, the maximum voltage is read when nothing is connected. Do not
replace the AX522 module while voltage is connected.
Fig. 78: Voltage input
1) Electrically isolated power supply of analog sensor
126
Pin
31
32
33
34
Pin
35
36
37
38
39
40
41
42
The outputs on connector X7 cannot be configured as current outputs.
3ADR010122, 8, en_US
Assignment / Signal
AX522 / O2+
AX522 / O2- (AGND)
AX522 / O3+
AX522 / O3- (AGND)
Assignment / Signal
AX522 / O4+
AX522 / O4- (AGND)
AX522 / O5+
AX522 / O5- (AGND)
AX522 / O6+
AX522 / O6- (AGND)
AX522 / O7+
AX522 / O7- (AGND)
2018/09/24