Station Communication; Modification Sales - ABB RELION REX640 Technical Manual

REX640 overview
The protection relay is the CAM client and can maintain its own replica database
of the user accounts and roles configured in the CAM server. This CAM replica
database acts as a backup authentication mechanism if primary and secondary
CAM servers are not accessible from the protection relay.
Each protection relay supports eight roles and 50 user accounts in the CAM replica
database. Each user account can be mapped to a maximum of eight roles.
2.8

Station communication

Operational information and controls are available through a wide range of
communication protocols including IEC 61850 Edition 2, IEC 61850-9-2 LE, IEC
60870-5-103, IEC 60870-5-104, Modbus
for example, horizontal communication between the relays, are only enabled by IEC
61850.
The relay provides the possibility for a second IP address and a second subnetwork
when the communication modules with three Ethernet ports (COM1001...1003) are
used. However, only one IP network can be used as the default route. Using two
IP addresses, communication networks can be separated based on the dominant
user's needs. For example, one IP address can serve the dispatchers and the other
one can serve the service engineers' needs.
The IEC 61850 protocol is a core part of the relay as the protection and control
application is fully based on standard modelling. The relay supports Edition 2 and
Edition 1 versions of the standard. With Edition 2 support, the relay has the latest
functionality modelling for substation applications and the best interoperability for
modern substations. The relay supports flexible product naming (FPN) facilitating
the mapping of relay's IEC 61850 data model to a customer defined IEC 61850 data
model.
2.9

Modification Sales

Modification Sales is a concept that provides modification support for already
delivered relays. Under Modification Sales it is possible to modify both the hardware
and software capabilities of the existing relay. The same options are available as
when a new relay variant is configured and ordered from the factory: it is possible
to add new hardware modules into empty slots, change the type of the existing
modules within the slots or add software functions by adding application and, if
necessary, add-on packages. If it is needed to use the possibilities provided by the
Modification Sales concept, please contact your local ABB unit.
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For more information on user management and security logging, see the
cyber security deployment guideline.
For user authorization for PCM600, see the PCM600 documentation.
®
and DNP3. Full communication capabilities,
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REX640
Technical Manual