Connecting Communication; Connecting Protection Communication - ABB RELION REX640 Installation Manual

Connecting
Figure 82: Connecting auxiliary voltage
5.7

Connecting communication

• Before connecting communication, check that the HW module has the correct
communication interfaces.
The communication module is located in slot A2.
5.7.1

Connecting protection communication

Port X6/LD of the communication module is used for protection communication
connection. As the optional SFP transceiver is not attached to the port at the time
of delivery, it needs to be installed to port X6/LD if protection communication is
used.
1.
88
See the technical manual for the communication
interfaces.
Check the allowed minimum bending radius from the
optical cable manufacturer.
Remove the dust cap from port X6/LD to expose the SFP socket.
1MRS759115 E
REX640
Installation Manual