Schweitzer Engineering Laboratories, Inc. SEL-411L Data Sheet
19
Architect Software
Use ACSELERATOR Architect SEL-5032 Software to
manage the IEC 61850 configuration for devices on the
network. This Windows-based software provides easy-
to-use displays for identifying and binding IEC 61850
network data among logical nodes that use IEC 61850-
compliant CID files. Architect uses CID files to describe
the data available in each relay.
Serial Communications
MIRRORED BITS Communications
The SEL patented MIRRORED BITS technology provides
bidirectional relay-to-relay digital communication.
Figure 32 shows two relays with SEL-2815 Fiber-Optic
Transceivers that use M
IRRORED BITS communications.
M
IRRORED BITS communications can operate simultane-
ously on any two serial ports. This bidirectional digital
communication creates additional outputs (transmitted
M
IRRORED BITS) and additional inputs (received
M
IRRORED BITS) for each serial port operating in the
M
IRRORED BITS communications mode.
Communicated information can include digital, analog,
and virtual terminal data. Virtual terminal allows opera-
tor access to remote relays through the local relay. You
can use this M
IRRORED BITS protocol to transfer infor-
mation between stations to enhance coordination and
achieve faster tripping.
Open Communications Protocols
The relay does not require special communications software. ASCII terminals, printing terminals, or a computer sup-
plied with terminal emulation and a serial communications port are all that is required. Table 1 lists a brief description of
the terminal protocols.
Figure 32 Integral Communication Provides Secure Protection, Monitoring, and Control as Well as Terminal Access to
Both Relays Through One Connection
Fiber-Optic Cable
SEL-2815
SEL-2815
Bus 1 Bus 2
1
Transmission Line
2
Digital, Analog, and Virtual Terminal Data
Other
Relays
Other
Relays
TX
RX
SEL-400 Series Relay
TX
RX
SEL-400 Series Relay
Table 1 Open Communications Protocol (Sheet 1 of 2)
Type Description
ASCII Plain-language commands for human and simple machine communications. Use for metering, setting, self-test
status, event reporting, and other functions.
Compressed ASCII Comma-delimited ASCII data reports. Allows external devices to obtain bay data in an appropriate format for
direct import into spreadsheets and database programs. Data are checksum protected.
Extended Fast Meter, Fast
Operate, and Fast SER
Binary protocol for machine-to-machine communications. Quickly updates communications processors, RTUs,
and other substation devices with metering information, bay element, I/O status, time-tags, open and close
commands, and summary event reports. Data are checksum protected. Binary and ASCII protocols operate
simultaneously over the same communications lines so that control operator metering information is not lost
while a technician is transferring an event report.
Ymodem Support for reading event, settings, and oscillography files.
Optional DNP3 Level 2
Outstation
DNP with point remapping. Includes access to metering data, protection elements, contact I/O, targets, SER,
relay summary event reports, and settings groups.
IEEE C37.118 Phasor measurement protocol.
M
IRRORED BITS SEL protocol for exchanging digital and analog information among SEL relays and for use as low-speed termi-
nal connection.
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