Siemens siprotec 7SA6 User Manual

Functions
6-300 7SA6 Manual
C53000-G1176-C133-1
Figure 6-150 shows all interlocking conditions (which usually appear in the display of
the device) for three switchgear items with the relevant abbreviations explained in
table 6-17. All parametrized interlocking conditions are indicated
(see Figure 6-150).
Figure 6-150 Example of configured interlocking conditions
Control Logic using
CFC
For zone controlled/field interlocking, control logic can be programmed, using the
CFC. Via specific release conditions the information “released” or “bay interlocked”
are available.
6.22.4 Recording and acknowledgement of commands
During the processing of the commands, independent of the further message routing
and processing, command and process feedback information are sent to the message
processing centre. These messages contain message cause indication. The
messages are entered in the event list.
Acknowledgement
of commands to the
device front
All messages which relate to commands that were issued from the device front
“Command Issued = Local” are transformed into a corresponding response and
shown in the display of the device.
Acknowledgement
of commands to
local/remote/Digsi
The messages which relate to commands with the origin “Command Issued = Local/
Remote/DIGSI” must be send independent of the routing (configuration on the serial
digital interface) to the initiating point.
The acknowledgement of commands is therefore not executed by a response
indication as it is done with the local command but by ordinary command and feedback
information recording.
Monitoring of
feedback
information
The processing of commands monitors the command execution and timing of
feedback information for all commands. At the same time the command is sent, the
monitoring time is started (monitoring of the command execution). This time controls
whether the device achieves the required final result within the monitoring time. The
monitoring time is stopped as soon as the feedback information arrives. If no feedback
information arrives, a response “Timeout command monitoring time” appears and the
process is terminated.
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.
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Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English