Eaton XC-303-C21-001 - Potential Relationship between the Components

2 Installation
2.5 Potential relationship between the components
Modular PLCs XControl: XC-104-…, XC-204-…, XC-303-… 01/23 MN050005EN Eaton.com 39
2.5 Potential relationship between the components
Modular PLCs XControl: XC-104-…, XC-204-…, XC-303-… feature a contact
point that is used to establish a protective earth connection to the DIN-rail.
Moreover, all power supply earth connections are connected to the protec-
tive earth.
One exception is the XC-303-… supply voltage for the local inputs and out-
puts U
L
at terminal X6. The ground connection at X6 is not connected to the
protective earth.
• 0V
• 
Figure 26: Potential relationships Modular PLCs XControl: XC-104-…, XC-204-…, XC-303-…
with I/O system XN300
Figure 27: Potential relationships XControl
XN-322 XN-322
n ≦ 32
n = 1
U
BP_24 V
+24 V DC
U
BP_5 V
+5 V DC
GND
GND
DNGDNG
V+
0 V
X6
XC300

Systembus
CPU-System

GND
U
L
24 V DC
GND
CAN
GND
L
I/Q 1
...
I/Q 4
ETHO
ETH1
ETH2
V+
0 V
X6
X1
X2
X3
X4
X5
CAN1
RS485
IO
XC300
CAN2
GND
CPU-System
Systembus