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Standard Interlock-
The standard interlockings contain the following fixed programmed tests for each
ing (fixed program-
switching device, which can be individually enabled or disabled using parameters:
ming)
• Device Status Check (set = actual): The switching command is rejected, and an
• System Interlocking: To check system interlocking, a local command is transmitted
• Zone Controlled / Bay Interlocking: Logic links in the device which were created via
• Blocked by Protection: A CLOSE-command is rejected as soon as one of the pro-
• Double Operation Block: Parallel switching operations are interlocked against one
• Switching Authority LOCAL: A switching command of the local control (command
• Switching Authority DIGSI
• Switching Authority REMOTE: A switching control command (command with
7UM61 Manual
C53000-G1176-C127-3
error indication is displayed if the circuit breaker is already in the set position. If this
check is enabled, then it works whether interlocking, e.g. zone controlled, is activat-
ed or deactivated.
to the central unit with Switching Authority = LOCAL. A switching device that is
subject to system interlocking cannot be switched by DIGSI
CFC are interrogated and considered during interlocked switching.
tective elements in the relay picks up. The OPEN-command, in contrast, can always
be executed. Please be aware, activation of thermal overload protection elements
or sensitive ground fault detection can create and maintain a fault condition status,
and can therefore block CLOSE commands. If the interlocking is removed, consider
that, on the other hand, the restart inhibit for motors will not automatically reject a
CLOSE command to the motor. Restarting would then have to be interlocked in
some other way. One method would be to use a specific interlocking in the CFC
logic.
another; while one command is processed, a second one cannot be carried out.
with command source LOCAL) is only allowed if a LOCAL control is allowed at the
device (by configuration).
®
ly via DIGSI
(command with command source DIGSI
control is admissible at the device (by configuration). If a DIGSI
device, it deposits here its virtual device (VD) number. Only commands with this VD
(when Switching Authority = REMOTE) will be accepted by the device. Remote
switching commands will be rejected.
source of command REMOTE) is only allowed if REMOTE control is admissible at
the device (by configuration).
®
: Switching commands that are issued locally or remote-
2.36 Command Processing
®
.
®
) is only allowed if REMOTE
®
PC connects to the
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