Siemens SIPROTEC 7SJ61 Manual page 253

Table 2-19 Interlocking logic
Current Switching
Switching Authority DIGSI
Authority Status
LOCAL (ON) not logged on
LOCAL (ON) logged on
REMOTE (OFF) not logged on
REMOTE (OFF) logged on
1)
also "allowed" for: "Switching Authority LOCAL (check for Local status): is not marked
2)
also "allowed" for: "Switching authority REMOTE (check for LOCAL, REMOTE, or DIGSI commands): is not marked
3)
SC = Source of command
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 (de-interlocked) switching.
For the 7SJ61 the switching authority can be changed between "Interlocked" and "Non-interlocked" in the op-
erator panel by password or by means of CFC also via binary input and function key.
The following switching modes (remote) are defined:
• For 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 notes in the CFC manual (component: BOOL
to command).
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
Command issued from
3)
SC =Local
not allocated
not allocated
1)
Interlocked
- "interlocked, since
control REMOTE"
1)
Interlocked
- "interlocked, because of
DIGSI control"
Command issued from
SC=LOCAL or REMOTE
2)
Interlocked
- "interlocked, since control
LOCAL"
2)
Interlocked
- "interlocked, since control
LOCAL"
not allocated
2)
Interlocked - "inter-
locked, because of DIGSI
control"
Functions
2.18 Breaker Control
Command issued from
SC=DIGSI
Interlocked
- "DIGSI not logged on"
2)
Interlocked
- "interlocked, since control
LOCAL"
Interlocked
- "DIGSI not logged on"
not allocated
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