Configuration Of The Binary Inputs And Outputs; Preparation - Siemens siprotec 7SA6 User Manual

Configuration
5.2

Configuration of the Binary Inputs and Outputs

General
5.2.1

Preparation

Indications
5-8
Upon delivery, the display on the front panel of the relay, some of the function keys,
the binary inputs and outputs (output contacts) are assigned to certain information.
These assignments may be modified, for most information, allowing adaptation to the
local requirements.
During configuration, certain information within the relay is assigned to certain
physical interfaces (e.g., binary inputs and output contacts) or logical interfaces (e.g.,
user-defined logic, CFC).
It must be determined which information should be linked with which device interface .
It may also be determined which properties the information and the interfaces should
have.
Messages and statistical values from earlier events can be lost during configuration;
therefore, operational and fault data and statistic counters which are memorized in the
relay should be read and saved if desired, prior to changing the configuration.
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 may be device information regarding events and conditions that can be
transmitted via output contacts (e.g. start-up of the processor system or a trip signal
initiated by a protective function). These are defined as output indications.
(binary output
signal)
Trip
(7SA6)
Figure 5-2 Output indication (OUT)
Indications also include information from the substation to the relay regarding events
and conditions in the system (e.g. position or condition of a circuit breaker). These are
defined as LQSXW LQGLFDWLRQV. Input indications with one binary input are VLQJOH
SRLQW LQGLFDWLRQV (SP). Two binary inputs whose normal conditions are oppo-
site, and which are monitored by the relay, are required for a GRXEOH SRLQW LQGL
FDWLRQ (DP).
(system)
L+
Output indication/tripcommand via relay contact
7SA6 Manual
C53000-G1176-C133-1