SEL-487B Data Sheet Schweitzer Engineering Laboratories, Inc.
16
Parallel Redundancy Protocol (PRP)
This protocol is used to provide seamless recovery from
any single Ethernet network failure, in accordance with
IEC 62439-3. The Ethernet network and all traffic are
fully duplicated with both copies operating in parallel.
HTTP Web Server
When equipped with Ethernet communications, the relay
can serve read-only web pages displaying certain
settings, metering, and status reports. As many as four
users can access the embedded HTTP server
simultaneously.
IEC 61850 Ethernet
Communications
IEC 61850 Ethernet-based communications provide
interoperability among intelligent devices within the
substation. Logical nodes using IEC 61850 allow
standardized interconnection of intelligent devices from
different manufacturers for monitoring and control of the
substation. Reduce wiring among various manufacturers’
devices and simplify operating logic with IEC 61850.
Eliminate system RTUs by streaming monitoring and
control information from the intelligent devices directly
to remote SCADA client devices.
You can order the SEL-487B with embedded IEC 61850
protocol operating on 10/100 Mbps Ethernet. EC 61850
Ethernet protocol provides relay monitoring and control
functions including:
➤ As many as 128 incoming GOOSE messages. The
incoming GOOSE messages can be used to control
up to 256 control bits in the relay with <3 ms
latency from device to device. These messages
provide binary control inputs and analog values to
the relay for high-speed control functions and
monitoring.
➤ As many as eight outgoing GOOSE messages. You
can configure outgoing GOOSE messages for
Boolean or analog data. Boolean data and desig-
nated remote analog outputs are provided with
<3 ms latency from device to device. Apply outgo-
ing GOOSE messages for high-speed control and
monitoring of external breakers, switches, and
other devices.
➤ IEC 61850 Data Server. The SEL-487B, equipped
with embedded IEC 61850 Ethernet protocol, pro-
vides data according to predefined logical node
objects. Each relay supports as many as seven
simultaneous client associations. Relevant Relay
Word bits are available within the logical node
data, so you can use the IEC 61850 data server in
the relay to monitor the status of relay elements,
inputs, outputs, or SEL
OGIC control equations.
➤ Configuration of up to 256 Virtual Bits within
GOOSE messaging to represent a variety of Bool-
ean values available within the relay. The Virtual
Bits the relay receives are available for use in
SEL
OGIC control equations.
➤ As many as 64 Remote analog outputs that you can
assign to virtually any analog quantity available in
the relay. You can also use SEL
OGIC math vari-
ables to develop custom analog quantities for
assignment as remote analog outputs. Remote ana-
log outputs using IEC 61850 provide peer-to-peer
transmission of analog data. Each relay can receive
up to 256 remote analog inputs and use those
inputs as analog quantities within SEL
OGIC control
equations.
MMS File Services
This service of IEC 61850 MMS provides support for
file transfers completely within an MMS session. All
relay files that can be transferred via FTP can also be
transferred via MMS file services.
MMS Authentication
When enabled via a setting in the CID file, the relay will
require authentication from any client requesting to
initiate an MMS session. The client request must be
accompanied by the 2AC level password.
ACSELERATOR Architect
USE ACSELERATOR Architect
®
SEL-5032 Software to
manage the logical node data for all IEC 68150 devices
on the network. This Microsoft
®
Windows
®
-based
software provides easy-to-use displays for identifying
and binding IEC 61850 network data among logical
nodes using IEC 61850-compliant Configured IED
Description (CID) files.
ACSELERATOR Architect uses
CID files to describe the data the IEC 61850 logical node
will provide within each relay.
Table 7 Open Communications Protocol (Sheet 1 of 2)
Type Description
ASCII Plain-language commands for human and simple machine communication.
Use for metering, setting, self-test status, event reporting, and other functions.
Compressed ASCII Comma-delimited ASCII data reports allow external devices to obtain relay data in an appropriate for-
mat for direct import into spreadsheets and database programs. Data are checksum protected.
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