Introduction
1.2 Application Scope
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
22
Control Functions
The device is equipped with control functions which operate, close and open, switchgear devices via control
keys, the system interface, binary inputs and a PC with DIGSI software. The status of the primary equipment
can be transmitted to the device via auxiliary contacts connected to binary inputs. The present status (or posi-
tion) of the primary equipment can be displayed on the device, and used for interlocking or plausibility monitor-
ing. The number of the devices to be switched is limited by the binary inputs and outputs available in the device
or the binary inputs and outputs allocated for the switch position feedbacks. Depending on the mode of opera-
tion, one binary input (single point indication) or two binary inputs (double point indication) can be used. The
capability of switching primary equipment can be restricted by appropriate settings for the switching authority
(remote or local), and by the operating mode (interlocked/non-interlocked, with or without password validation).
Interlocking conditions for switching (e.g. switchgear interlocking) can be established using the integrated user-
defined logic.
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.
Device messages can be assigned to a number of LEDs on the front panel (programmable), can be externally
processed via output contacts (programmable), linked with user-definable logic functions and/or issued via
serial interfaces (see Communication below).
During a fault (system fault) important events and changes in conditions are saved in fault logs. Instantaneous
fault values are also saved in the device and may be analysed at a later time.
The fault values are synchronized between the line terminals via the communication link.
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