Functions
2.50 Command Processing
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
357
SC = Auto:
Commands that are derived internally (command processing in the CFC) are not subject to switching authority
and are therefore always "enabled".
Switching Mode
The switching mode determines whether selected interlocking conditions will be activated or deactivated at the
time of the switching operation.
The following switching modes (local) are defined:
• Local commands (SC=LOCAL)
– interlocked (normal), or
– non-interlocked switching.
For the 7UM621 and 7UM622 the switching authority can be changed between "Interlocked" and "Non-inter-
locked" in the operator panel by password or by means of CFC also via binary input and function key. For the
7UM623 this is done by means of a keyswitch.
The following switching modes (remote) are defined:
• Remote or DIGSI commands (SC = LOCAL, REMOTE, or DIGSI)
– interlocked, or
– non-interlocked switching. Here, deactivation of interlocking is accomplished via a separate command.
– For commands from CFC (SC = Auto), please observe the guidelines in the CFC manual (component:
BOOL to command).
Zone Controlled / Field Interlocking
Zone Controlled (field interlocking) includes the verification that predetermined switchgear position conditions
are satisfied to prevent switching errors as well as the use of other mechanical interlocking, such as High
Voltage compartment doors etc.
Interlocking conditions can be configured separately for each switching device, for MAKE and/or TRIP switch-
ing.
Processing of the status of the release condition for an operation switching device can be based on information
acquired:
• directly, using a single point or double point indication, key-switch, or internal indication (tagging), or
• by means of a control logic via CFC.
When a switching command is initiated, the actual status is scanned and updated cyclically. The assignment
is done via Release object CLOSE/OPEN command.
System Interlocking
Substation Controller (System interlocking) involves switchgear conditions of other bays evaluated by a central
control system.
Double Activation Blockage
Parallel switching operations are interlocked. When a control command is received, all objects that are subject
to double operation inhibit are checked for control commands in progress. While the command is being exe-
cuted, the block is in turn active for all other commands.
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