ABB Relion 670 series - Page 1329

22.2.13.3 Technical data
SEMOD158678-1 v1
SEMOD158710-2 v2
Table 1038:Galvanic RS485 communication module
Quantity Range or value
Communication speed 2400–19200 bauds
External connectors RS-485 6-pole connector
Soft ground 2-pole connector
22.2.14 Optical ethernet module (OEM)
IP15584-1 v1
22.2.14.1 Introduction
M16073-3 v6
The optical fast-ethernet module is used for fast and interference-free communication of
synchrophasor data over IEEE C37.118 and/or IEEE 1344 protocols. It is also used to connect an IED
to the communication buses (like the station bus) that use the IEC 61850-8-1 protocol (OEM rear
port A, B). The process bus use the IEC 61850-9-2LE protocol (OEM rear port C, D). The module has
one or two optical ports with ST connectors.
22.2.14.2 Functionality
M14948-3 v3
The Optical Ethernet module (OEM) is used when communication systems according to IEC61850–
8–1 have been implemented.
22.2.14.3 Design
M14945-3 v3
The Optical Ethernet module (OEM) is a PMC card and mounted as a mezzanine card on the ADM.
The OEM is a 100BASE-FXmodule and available as a single channel or double channel unit.
1MRK 502 066-UUS B Section 22
IED hardware
1323
Technical manual