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Introduction
1.2 Application Scope
conditions for switching (e.g. switchgear interlocking) can be defined with the help of integrated user-config-
urable logic functions.
Messages and Measured Values; Recording of Event and Fault Data
The operational indications provide information about conditions in the power system and the device. Meas-
urement quantities and values that are calculated can be displayed locally and communicated via the serial
interfaces.
Device messages can be assigned to a number of LEDs on the front cover (allocatable), can be externally
processed via output contacts (allocatable), linked with user-definable logic functions and/or issued via serial
interfaces.
During a fault (system fault) important events and changes in conditions are saved in fault protocols (Event
Log or Trip Log). Instantaneous fault values are also saved in the device and may be analyzed subsequently.
Communication
The following interfaces are available for communication with external operating, control and memory
systems.
The USB DIGSI interface on the front cover serves for local communication with a PC. With the SIPROTEC 4
operating software DIGSI, all operation and evaluation tasks can be executed using this operator interface, for
instance specifying and editing configuration parameters and settings, configuring user-specific logic func-
tions, retrieving operational messages and measured values, inquiring device conditions and measured values,
issuing control commands.
Port A is located on the bottom side of the device. This protection data interface connects the device to its
partner device at the remote end of the protected object.
Alternatively, you can implement the communication link using the voltage terminals D-1 and D-2.
Port B serves for central communication between the device and a control center. It can be operated via data
lines or optical fiber cables. For the data transfer, standardized protocols according IEC 60870-5-103 are avail-
able. The integration of the devices into the SINAUT LSA and SICAM automation systems can also be imple-
mented with this profile.
Alternatively, there are additional connection options available in connection with PROFIBUS DP and the
DNP3.0 and MODBUS protocols. If an EN100 module is available, it is also possible to use the IEC61850
protocol.
You can also use Port B to connect a time synchronization device such as DCF77 or IRIG-B.
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SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
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