Technical Data; Optical Ethernet Module (Oem); Introduction; Functionality - ABB Relion 670 Series Technical Reference Manual

1MRK 505 208-UEN B
17.2.15.3
17.2.16
17.2.16.1
17.2.16.2
17.2.16.3
Technical reference manual

Technical data

Table 464: Galvanic RS485 communication module
Quantity
Communication speed
External connectors

Optical ethernet module (OEM)

Introduction

The optical fast-ethernet module is used to connect an IED to the communication
buses (like the station bus) that use the IEC 61850-8-1 protocol (port A, B). The
module has one or two optical ports with ST connectors.

Functionality

The Optical Ethernet module (OEM) is used when communication systems
according to IEC61850–8–1 have been implemented.

Design

The Optical Ethernet module (OEM) is a PMC card and mounted as a mezzanine
card on the ADM. The OEM is a 100base Fx module and available as a single
channel or double channel unit.
PCI - bus Connector
EEPROM
PCI - PCI Bridge
ID chip
EEPROM
IO - bus Connector
IEC04000472 V1 EN
Figure 316: OEM block diagram.
Range or value
2400–19200 bauds
RS-485 6-pole connector
Soft ground 2-pole connector
Ethernet Controller
Ethernet Controller
Section 17
IED hardware
100Base-FX
Transmitter
ST fiber optic
connectors
100Base-FX
Receiver
100Base-FX
Transmitter
ST fiber optic
connectors
100Base-FX
Receiver
en04000472.vsd
653