Setting Protection Relay And Communication; Communication Settings - ABB RELION 620 Series Operation Manual

1MAC456939-IB D
8.5
8.5.1
620 series ANSI
Operation Manual
The used method depends on the time at which the IP address is available. Defining IP
address in the Object Properties windows allows changing the IP address at any time.

Setting protection relay and communication

Communication settings

The protection relay is provided with an RJ-45 front port on the LHMI. This connector is
mainly used for configuration and setting purposes. The rear port IP address and the
corresponding subnet masks can be set via the LHMI. The front port uses a fixed IP
address 192.168.0.254, and it also provides DHCP server to assign an IP address for the
connected computer. The rear Ethernet interface has a factory default IP address
192.168.2.10 when the complete protection relay is delivered.
Different communication ports are available via optional communication modules.
Ethernet RJ-45 and optical Ethernet LC are the two rear port Ethernet communication
options. Rear port Ethernet is intended for station bus communication. Communication
protocols used via Ethernet ports are IEC 61850-8-1, DNP3 TCP/IP and Modbus TCP/IP.
If the protocol does not operate as expected, check that other serial
protocols are not using the COM port.
DNP3 protocol ignores any parity setting in the COM settings group;
DNP3 is defined as an 8 bit/no parity protocol with a 16-bit CRC every 16
bytes. This provides better error detection than parity.
For cyber security purposes, disable all unused communication protocols
and ports.
Use the correct Ethernet connectors in the protection relay with redundant
communication protocols like HSR and PRP. protection relays with HSR/
PRP support have three Ethernet connectors and redundant Ethernet ports
are marked as LAN A and LAN B. The third Ethernet port without any
LAN marking works as an interlink port. Thus, an additional redundancy
box is not needed. For example, laptops with PCM600 must be connected
via a redundancy box to access a protection relay which is part of the HSR
network.
Section 8
Commissioning
121