ABB REX640 User Manual

one port to another to reach the next node. When the
originating sender node receives the frame it sent, the sender
node discards the frame to avoid loops. The HSR ring supports
the connection of up to 30 relays. If more than 30 relays are to
be connected, it is recommended to split the network into
several rings to guarantee the performance for real-time
applications.
Ethernet switch
Redundancy
Box
IEC 61850 HSR
Redundancy
Box
Redundancy
Box
SCADA
Devices not supporting HSR
COM600
GUID-ED51EEB9-98EB-4D4D-B0F8-BB965927FAF4 V2 EN
Figure 19. High-availability seamless redundancy (HSR) solution
The relay can be connected to Ethernet-based communication
systems in a station bus using the RJ-45 connector (100Base-
TX) or the multimode fiber optic LC connector (100Base-FX). A
dedicated protection communication port uses a pluggable
multimode or single-mode fiber optic LC connector (100Base-
FX). If connection to a serial bus is required, the RS-485 or
fiber-optic serial communication ports can be used.
Modbus implementation supports RTU, ASCII and TCP modes.
Besides standard Modbus functionality, the relay supports
retrieval of time-stamped events, changing the active setting
group and uploading of the latest fault records. If a Modbus
TCP connection is used, five clients can be connected to the
relay simultaneously. Further, Modbus serial and Modbus TCP
can be used in parallel, and, if required, both IEC 61850 and
Modbus can be run simultaneously.
The IEC 60870-5-103 implementation supports two parallel
serial bus connections to two different masters. Besides basic
standard functionality, the relay supports changing of the active
setting group and uploading of disturbance recordings in IEC
60870-5-103 format. Further, IEC 60870-5-103 can be used at
the same time with the IEC 61850 protocol.
DNP3 supports both serial and TCP modes for the connection
of up to five masters. Changing the active setting and reading
fault records are supported. DNP serial and DNP TCP can be
used in parallel. If required, both IEC 61850 and DNP can be run
simultaneously.
The relay supports Profibus DPV1 with support of SPA-ZC 302
Profibus adapter. If Profibus is required, the relay must be
ordered with Modbus serial options. Modbus implementation
includes SPA protocol emulation functionality. This functionality
enables connection to SPA-ZC 302.
When the relay uses the RS-485 bus for the serial
communication, both two- and four-wire connections are
supported. Termination and pull-up/down resistors can be
configured with DIP switch on the communication card so that
external resistors are not needed.
1MRS759144 A
REX640
Product version: 1
ABB 25

ABB REX640 Specifications

General

Device Type	Protection Relay
Communication Protocols	IEC 61850, Modbus, DNP3, IEC 60870-5-103
Rated Frequency	50/60 Hz
Operating Temperature Range	-25°C to +55°C
Display	LCD
Housing	Metal
Manufacturer	ABB
Model	REX640
Mounting	Rack mounting
Inputs and Outputs	Configurable binary inputs and outputs
Rated Voltage	48-240 V AC/DC
Protection Functions	Overcurrent, Earth Fault
Input Voltage	48-240 V AC/DC
Certifications	CE, UL, IEC