SEL-3061 Data Sheet Schweitzer Engineering Laboratories, Inc.
4
these devices to a SCADA system via cellular WAN con-
nections and allows the SCADA to poll each device by
using DNP3 over TCP/IP and Modbus TCP/IP.
Engineering Access
The SEL-3061 allows users to access IEDs to view and
modify settings and download oscillographic event
reports through VPNs.
Distributed Data Acquisition
Modern automation systems can be distributed over a
large geographical area. These automation systems mon-
itor and process input signals, execute logic, and enable
or disable outputs. In some instances, it is necessary to
perform data acquisition on the status or value of the
connected I/O. A distributed data acquisition system uses
an automation controller as the data concentrator and a
computer as the SCADA host. The system uses remote,
discrete, and analog I/Os. As shown in Figure 3, a single
SEL-3061 at each site both provides the connectivity
between these remote I/Os with the automation control-
ler and backhauls the collected data to the SCADA com-
puter.
Figure 3 SCADA, Engineering Access, and Distributed Data Acquisition
Cell Tower
Wired Network Lin
Analog I/O
Discrete I/O
SEL-3530
SEL-3530
SEL-2411
SEL-735
SEL-2725
SEL-2240 Axion
SEL-2440 DPAC
Cellular Link
Wide-Area
Network
SCADA
SEL-3061 SEL-3061
SEL-735
SEL-3061
SEL-3061
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