ABB AC31 - Page 92

Connector / Terminal Pin Assignment / Signal
X2 / 2.3 8 AI523 / I3+
X2 / 2.2 9 AI523 / I2+
X2 / 1.4 10 AI523 / I4- (AGND1)
X2 / 2.5 11 AI523 / I5+
X2 / 2.4 12 AI523 / I4+
Table 50: Pin assignment AI (X3)
Connector / Terminal Pin Assignment / Signal
X3 / 1.6 13 AI523 / I6- (AGND1)
X3 / 2.7 14 AI523 / I7+
X3 / 2.6 15 AI523 / I6+
X3 / NC 16 Not connected
X3 / NC 17 Not connected
In module AI523, the signals I0-, I2-, I4- and I6- are internally connected to an analog earth. The
potential difference of the analog earth to M is ±1 V (max.). The replacement device has no cur-
rent sources on pins 16 and 17. If necessary, these current sources can be connected to indi-
vidual measurement channels via the configuration (DIP switch).
Table 51: Pin assignment 24 V DC 6W (X4)
Connector / Terminal Pin Assignment / Signal
X4 / L+ 18 L+
X4 / L+ 19 L+
X4 / M 20 M
X4 / M 21 M
X4 / FE 22 FE
Table 52: Pin assignment AI (X5)
Connector / Terminal Pin Assignment / Signal
X5 / 3.0 23 AI523 / I8- (AGND2)
X5 / 4.1 24 AI523 / I9+
X5 / 4.0 25 AI523 / I8+
X5 / 3.2 26 AI523 / I10- (AGND2)
X5 / 4.3 27 AI523 / I11+
Table 53: Pin assignment AI (X6)
Connector / Terminal Pin Assignment / Signal
X6 / 4.2 28 AI523 / I10+
X6 / 3.4 29 AI523 / I12- (AGND2)
X6 / 4.5 30 AI523 / I13+
X6 / 4.4 31 AI523 / I12+
X6 / 3.6 32 AI523 / I14- (AGND2)
AC31 Adapters
Replacement devices: I/O modules > Replacement device 07AI91-AD
2018/09/243ADR010122, 8, en_US92