Communication - ABB RELION REX640 Technical Manual

1MRS759142 C
3.2
REX640
Technical Manual

Communication

The protection relay supports a range of communication protocols including IEC
61850, IEC 61850-9-2 LE, IEC 60870-5-103, Modbus
communication protocol is supported by using the protocol converter SPA-ZC 302.
Operational information and controls are available through these protocols. However,
some communication functionality, for example, horizontal communication between
the protection relays, is only enabled by the IEC 61850 communication protocol.
One full IEC 61850-9-2 LE stream containing both voltages and currents can be sent.
Receiving of up to four SMV streams is supported with a total of maximum 16
channels. The channels are freely configurable with the possibility to engineer SMV
stream redundancy using the voltage and current switch functions with either another
SMV stream or local measurements. The SMV stream quality along with other
Application Configuration logic can be used for switching between measurement
sources.
The IEC 61850 communication implementation supports all monitoring and control
functions. Additionally, parameter settings, disturbance recordings and fault records
can be accessed using the IEC 61850 protocol. Disturbance recordings are available
to any Ethernet-based application in the IEC 60255-24 standard COMTRADE file
format. The protection relay can send and receive binary signals from other devices
(so-called horizontal communication) using the IEC 61850-8-1 GOOSE profile,
where the highest performance class with a total transmission time of 3 ms is
supported. Furthermore, the protection relay supports sending and receiving of analog
values using GOOSE messaging. The protection relay meets the GOOSE
performance requirements for tripping applications in distribution substations, as
defined by the IEC 61850 standard.
The protection relay can support five simultaneous clients. If PCM600 reserves one
client connection, only four client connections are left, for example, for IEC 61850
and Modbus.
All communication connectors are placed on integrated optional communication
modules. The protection relay can be connected to Ethernet-based communication
systems via the RJ-45 connector (100Base-TX) or the fiber-optic LC connector
(100Base-FX).
The HMI has two RJ-45 connectors. One is for connecting the HMI to the protection
relay main unit and the second is a service port which is used for connecting the HMI
and a single computer. This computer can be, for example, a laptop with the PCM600
engineering tool or a browser for WHMI.
An optional serial interface is available for RS-485 communication.
Section 3
Basic functions
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