2 Installation
2.5 Potential relationship between the components
27 XN300 slice modules 02/24 MN050002EN Eaton.com
2.5 Potential relationship between the components
All XN300 slice modules feature a contact point that is used to establish a
functional earth connection to the DIN-rail. Moreover, all power supply earth
connections are connected to the functional earth. Finally, the CANopen field
bus interface or EtherCAT interface and the XN300 system are galvanically
isolated from each other.
Common
• 0V
•
Figure 11: Function principle of XN300 system
Figure 12: Gateway in XN300 system
V+
0 V
V+
0 V
XN-312
CPU system
XN-322 XN-322
system bus
master
U
POW
X3
DC
DC (24 V DC)
n = ≦ 31
n = 1
U
BP_24V
+24 V DC
U
BP_5V
+5 V DC
GND
GND
XN300-Assist
interface
CAN
CAN interface
24 V DC
V+
0 V
V+
0 V
GND
PE
system bus
0 V
U
BP_24V
+24 V DC
U
BP_5V
+5 V DC
U
POW
X3
XN-312-GW-CAN
UL: F1 ≦ 2 A
IEC: F1 ≦ 3 A
XN-322
IEC/EN 60715
XN-322
≦ 31 x XN-322