Beckhoff EP31 Series

Mounting and cabling
EP31xx42 Version: 2.4
3.6 EP3162-0002 - Electrical isolation of the channels
The block diagram shown below illustrates the principle of the electrical isolation of the two channels. The
24V with which the channels are supplied come from an electrically isolated DC/DC and are thus U
A
instead
of U
S
.
Fig.21: Block diagram: electrical isolation
Electrical isolation of GND
The GNDs of channel 1 (GND
A
) and channel 2 (GND
B
) are electrically isolated from each other.