Rear Communication Modules - ABB RELION SMU615 Technical Manual

Merging unit's physical connections
10.4.4

Rear communication modules

Figure 142: Communication module options
Ethernet ports marked with LAN A and LAN B are used with redundant Ethernet
protocols HSR and PRP. The third port without the LAN A or LAN B label is an
interlink port which is used as a redundancy box connector with redundant Ethernet
protocols.
254
COM0031 COM0032
3xRJ-45
2xLC+RJ-45+
ST+ARC
COM0033 COM0037
3xRJ-45+ 2xLC+RJ-45
ST+ARC
1MRS758407 C
SMU615
Technical Manual