Siemens SIPROTEC 4 7SJ61 Manual page 229

Commands and information feedback are also recorded in the event list. Normally the execution of a
command is terminated as soon as the feedback information (FB+) of the relevant switchgear arrives or, in
case of commands without process feedback information, the command output resets and a message is
output.
The "plus" sign appearing in a feedback information confirms that the command was successful. The
command was as expected, in other words positive. The "minus" is a negative confirmation and means that
the command was not executed as expected.
Command Output and Switching Relays
The command types needed for tripping and closing of the switchgear or for raising and lowering of trans-
former taps are described in the configuration section of the SIPROTEC 4 System Description
Systembeschreibung.
SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016
Functions
2.18 Breaker Control
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