ABB Relion 620 Series Applications Manual page 25

1MAC308145-MB E
RER620
Application Manual
All communication connectors, except for the front port connector, are placed on
integrated communication modules. The relay can be connected to Ethernet-based
communication systems via the RJ-45 connector (100BASE-TX) or the fiber-optic LC
connector (100BASE-FX). Also, a serial interface is available for RS-232/RS-485
communication.
Section 2
RER620 overview
19