Configuration
5-6 7SJ62 Manual
C53000-G1140-C121-1
5.2 Configuration of Information, Meaured Values, and Commands
General Upon delivery, the displays on the front panel of the relay, some of the function keys,
the binary inputs, and the output contacts are configured to receive information. These
configurations may be modified to meet your specific requirements.
During configuration, certain information within the relay is automatically configured to
certain physical interfaces (e.g., binary inputs and output contacts) or logical interfac-
es (e.g., user-defined logic, CFC).
It must be determined
which information
should be linked
with which
device
interface
.
It must also be determined which characteristics the information and the interfaces
should have .
Messages and statistical values from earlier events can be lost during configuration;
therefore, data from the trip log, event log, and statistic counters should be read and
saved if desired, prior to changing the configuration.
5.2.1 Preparation
Before configuration is started, the overall interfacing requirements must be assessed.
The required inputs and outputs must be compared with the number of physical inputs
and outputs present on the relay. The types of indications and commands, and their
requirements, should be taken into account.
Indications Some indications may be device information regarding events and conditions, which
can be transmitted via output contacts (e.g. startup of the processor system). These
are known as output indications. Indications also include information from the pro-
tected equipment to the relay regarding equipment status and conditions (e.g. position
or condition of a circuit breaker). These are known as input indications.
Depending on the type, indications may be further classified. Figures 5-2 and 5-3
show typical indication types schematically. Two binary inputs whose normal condi-
tions are opposite, and which are monitored by the relay, are required for a double
point indication.
Figure 5-2 Output Indication (OUT)
Restart
V+
(Internal Logic
Information)
Output Indication via Relay Contact
(equipment)
(7SJ62)
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