Eaton PXR10 - Page 84

10 Industrial Ethernet Communication Adapter Modules (ECAM)
80 PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
The fieldbus wiring is done as follows:
Figure 17: Ethernet communication adapter modules wiring
a Modbus RTU input
b Bus termination resistor (for the final node)
c Modbus RTU-compatible cable:triple wire: two twisted signal wires; one shielded COM wire
d HF-compatible functional grounding
e Modbus cable
f RS-485 Sub DB9 male connector
g Front view
h Bottom view
i RJ45 input
j RJ45 output
The Sub DB9 male connector wiring must be done as follows:
Figure 18: Sub DB9 Male connector wiring

①
④②
③⑥⑤PXR-RCAM_MRTU-I
120R
⑦⑧
⑨
⑩
PWR
X2.1
ETHERNET/IP
X2.2
GW
MRTU
NZM
MS
NS
LA1
LA2
Sub DB9 male connector Pin Signal Description
1 Not available Not used
2 Not available Not used
3 Not available Not used
4 Not available Not used
5 GND Ground
6 Not available Output for external bus termination
7 Not available Not used
8 B NZM Line B
9 A NZM Line A
Connector Shield Functional earth (braided shield)
5
GND
4
N/A
3
N/A
2
N/A
1
N/A
9
A
8
B
7
N/A
6
N/A