Table of Contents
Advertisement
Indications and Measured Values; Fault Recording
The operational indications provide information about conditions in the power system and the device. Measure-
ment quantities and values that are calculated can be displayed locally and communicated via the serial inter-
faces.
Indications can be assigned to a number of LEDs on the front panel (allocatable), can be externally processed
via output contacts (allocatable), linked with user-definable logic functions and/or issued via serial interfaces
(see Communication below).
During a fault (power system fault) important events and changes in conditions are saved in fault logs (Event
Log or Trip Log). Instantaneous fault values are also saved in the device and may be analyzed subsequently.
Communication
Serial interfaces are available for the communication with operating, control and memory systems.
A 9-pin DSUB socket on the front panel is used for local communication with a PC. The SIPROTEC 4 operating
software DIGSI allows users to carry out all operational and evaluation tasks via this operator interface, such
as specifying and modifying configuration parameters and settings, configuring user-specific logic functions,
retrieving operational messages and measured values, inquiring device conditions and measured values,
issuing control commands.
To establish an extensive communication with other digital operating, control and memory components the
device may be provided with further interfaces depending on the order variant.
The service interface can be operated via the RS232 or RS485 interface and also allows communication via
modem. For this reason, remote operation is possible via PC and the DIGSI operating software, e.g. to operate
several devices via a central PC.
The system interface ensures the central communication between the device and the substation controller. It
can be operated through the RS232, the RS485 or the fibre optic interface. Several standardized protocols are
available for data transmission. An EN 100 module allows to integrate the devices into 100 Mbit Ethernet com-
munication networks used by process control and automation systems and running IEC 61850 protocols. In
parallel to the process control integration of the device, this interface can also be used for communication with
DIGSI and for inter-relay communication via GOOSE.
Another interface is provided for the time synchronization of the internal clock via external synchronization
sources (IRIG-B or DCF77).
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
Introduction
1.2 Application Scope
19
Advertisement
Table of Contents
