Section 2 1MAC309294-MB F
RER620 overview
30 RER620
Technical Manual
Table 3: Predefined user categories
2.5 Communication
The relay supports different communication protocols: IEC 61850, Modbus
®
and DNP 3.0
Level 2, IEC 104- all using TCP/IP. DNP3, PG&E 2179, IEC101and Modbus are
supported through serial communication. Operational information and controls are
available through these protocols.
The IEC 61850 communication implementation supports all monitoring and control
functions. Additionally, parameter setting and DFR records can be accessed using the IEC
61850 protocol. Oscillographic files are available to any Ethernet-based application in the
standard COMTRADE format. Further, the relay can send and receive binary signals from
other relays (so called horizontal communication) using the IEC61850-8-1 GOOSE
profile, where the highest performance class with a total transmission time of 3 ms is
supported. The relay meets the GOOSE performance requirements for tripping
applications in distribution substations, as defined by the IEC 61850 standard. The relay
can simultaneously report events to five different clients on the station bus.
All communication connectors, except for the front port connector, are placed on
integrated optional communication modules. The relay can be connected to
Ethernet-based communication systems via the RJ-45 connector (100BASE-TX) or the
fiber-optic LC connector (100BASE-FX).
User authorization is disabled by default but WHMI always uses
authorization.
Username User rights
VIEWER Read only access
OPERATOR
• Selecting remote or local state with (only locally)
• Changing setting groups
• Controlling
• Clearing alarm and indication LEDs and textual indications
ENGINEER • Changing settings
• Clearing event list
• Clearing DFRs
• Changing system settings such as IP address, serial baud rate or DFR settings
• Setting the relay to test mode
• Selecting language
ADMINISTRATOR • All listed above
• Changing password
• Factory default activation
For user authorization for PCM600, see PCM600 documentation.