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2 Functions
No.
Information
31008
Q8 OpCnt=
31009
Q9 OpCnt=
2.18.3 Process Data
During the processing of commands, independently of the further allocation and pro-
cessing of indications, command and process feedbacks are sent to the indication pro-
cessing. These indications contain information on the cause. With the corresponding
allocation (configuration) these indications are entered in the event log, thus serving
as a report.
A listing of possible operational indications and their meaning, as well as the
command types needed for tripping and closing the switchgear or for raising and low-
ering transformer taps and detailed information are described in the SIPROTEC 4
System Description.
2.18.3.1 Method of Operation
Acknowledgement
All indications with the source of command LOCAL are transformed into a correspond-
of Commands to
ing response and shown in the display of the device.
the Device Front
Acknowledgement
The acknowledgement of indications which relate to commands with the origin "Com-
of commands to lo-
mand Issued = Local/ Remote/DIGSI" are sent back to the initiating point independent
cal/remote/DIGSI
of the routing (configuration on the serial digital interface).
The acknowledgement of commands is therefore not executed by a response indica-
tion as it is done with the local command but by ordinary command and feedback in-
formation recording.
Feedback monitor-
Command processing time monitors all commands with feedback. Parallel to the com-
ing
mand, a monitoring time period (command runtime monitoring) is started which
checks whether the switchgear has achieved the desired final state within this period.
The monitoring time is stopped as soon as the feedback information arrives. If no feed-
back information arrives, a response „Time Limit Expired" appears and the
process is terminated.
Commands and their feedbacks are also recorded as operational indications. Normal-
ly 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.
In the feedback, the plus sign means that a command has been positively completed.
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 out-
The command types needed for tripping and closing of the switchgear or for raising
put/switching
and lowering transformer taps have been defined during the configuration, see also
relays
SIPROTEC 4 System Description.
262
Type of In-
formation
VI
Q8 operationcounter=
VI
Q9 operationcounter=
Comments
7SD610 Manual
C53000-G1176-C145-4
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