Eaton XN300 - 15.1.4 Wiring digital outputs; 15.1.5 Suppressor circuit for inductive loads

15 Digital output module XN-322-8DO-P05
15.1 Pin assignment and status LED signals
95 XN300 slice modules 02/24 MN050002EN Eaton.com
15.1.4 Wiring digital outputs
Figure 59: Wiring example
15.1.5 Suppressor circuit for inductive loads
High induced voltages may be produced when inductive loads are switched
off. Because of this, the transistor outputs have internal suppressor circuits
to +24 V.
As shown in the diagram below, the voltage when switching off inductive
loads is limited to -29 V. In order to prevent system malfunctions caused by
voltage peaks (e.g., coupling on analog cables), it is recommended to use a
suppressor circuit (RC suppressors or flyback diodes) directly on inductive
loads.
Figure 60: Voltage limiting when switching off inductive loads

X1 X2
1234
X3
PE
24 V
0 V
24
0V
F1
I
max
5678
t [sec]
+24 V
+U
out
[V]
-0.7 V
-29 V