Schweitzer Engineering Laboratories SEL-2890, Инструкция по эксплуатации

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SEL-2890 Instruction Manual Date Code 20210715
Introduction & Specifications
Applications
1.2
Applications
The SEL-2890 can assist with many substation networking applications. A sampling of
applications is listed below to help you understand how each feature works. This
understanding should also give you ideas on how to apply the SEL-2890.
Section 4:
Detailed Application Examples provides detailed application examples with settings.
Terminal Access
Use the SEL-2890 to provide terminal access over an Ethernet network to serial
devices. Similar to connecting a PC with terminal software to a serial IED, you can use
the transceiver to make this connection via an Ethernet network.
Many PC operating systems include a free Telnet application. Telnet applications
operate similarly to serial terminal applications. With a Telnet application, you must
specify an IP address and port number rather than a serial port and data rate. After you
start a Telnet session, your Telnet software operates similarly to a terminal program by
passing your keystrokes across the Ethernet network, through the transceiver, and into
the serial device.
Figure 1.1 displays different connection types from an engineering workstation to SEL
relays and a communications processor. This figure is not meant to display a best
choice integration architecture for a substation—many other factors need to be
considered and are beyond the scope of this manual. In this arrangement, the Telnet
application allows you to operate the user interface of the selected device similarly to a
direct serial connection. However, it is important to note that you have the ability to
Telnet through the SEL-2890 as described above and the ability to Telnet to the
SEL-2890 to change settings and control the transceiver. Telneting to the SEL-2890
and not through it is referred to as a Console session. Telnet port 1025 is the port used
for a Console session. Ports 23 and 1026–65534 are used to Telnet through the
SEL-2890 and out of its serial port. This type of Telnet connection is common among
software and is supported by SEL software.