Siemens siprotec 7SA6 User Manual

Functions
6-320 7SA6 Manual
C53000-G1176-C156-2
Monitoring the
Command Execu-
tion
− Interruption of a command because of a cancel command
− Running time monitor (feedback message monitoring time)
6.24.3 Interlocking
Interlocking is executed by the user-defined logic (CFC). The interlocking checks of a
SICAM/SIPROTEC
®
-system are classified into:
• System interlocking checked by a central control system (for a busbar)
• Zone controlled/bay interlocking checked in the bay device (for the feeder)
System interlocking relies on the system data base in the central control system. Zone
controlled/bayinterlockingrelieson the status of the circuit breaker and other switches
that are connected to the relay.
The extent of the interlocking checks is determined by the configuration and interlock-
inglogicoftherelay.
Switchgear which is subject to system interlocking in the central control system is
marked with a parameter (in the routing matrix)
For all commands the user can select the operation mode with interlocking (normal
mode) or without interlocking (test mode):
− for local commands by reprogramming the settings with password check,
− for automatic commands via command processing with CFC mittels Entriegelung-
skennungen,
− for local / remote commands, using an additional interlocking disable command, via
Profibus.
6.24.3.1 Interlocked/Non-Interlocked Switching
The command checks that can be selected for the SIPROTEC
®
-relays are also re-
ferred to as “standard interlocking”. These checks can be activated (interlocked) or de-
activated (non interlocked) via DIGSI
®
4.
Deactivated interlock switching means the configured interlocking conditions are not
checked in the relay.
Interlocked switching means that all configured interlocking conditions are checked in
the command check. If a condition could not be fulfilled, the command will be rejected
by a message with a minus added to it (e.g. “
CO-”), immediately followed by an oper-
ation response information. Table 6-20 shows some types of commands and messag-

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English