Siemens siprotec 7SJ63 - Page 344

Functions
6-180 7SJ63 Manual
C53000-G1140-C120-1
− DIGSI
®
4
− REMOTE (commands are issued from SCADA)
The switching authority condition /2&$/ allows commands from the user interface of
the relay, but not remote or DIGSI commands.
The 7SJ63 is equipped with key switches on the front panel. The top switch is reserved
for switching authority between “Local” and “Remote” mode.
The switching authority condition ',*6, allows commands to be initiated using
DIGSI
®
4. Commands are allowed for both a remote and a local DIGSI
®
4 connection.
Configuration Programming:
1. Specific Device (e.g., switching device): Switching authority LOCAL (check for
commands initiated Locally via keypad):
y/n
2. Specific Device (e.g., switching device): Switching authority REMOTE (check for
SAS, REMOTE, or DIGSI commands:
y/n
In detail, the following interlocking logic is derived when using default configuration
settings:
*1
) By-passes Interlock if Configuration for: “switching authority LOCAL (check for Local status): is not marked.
*2
) By-passes Interlock if Configuration for: “switch authority REMOTE (check for CLOSE, REMOTE, or
DIGSI status): is not marked
SC = source of command
SC = AUTO: Commands that are initiated internally (command processing in the CFC)
are not subject to switching authority and are therefore always allowed.
Switching Mode There are three modes:
− Local
− Remote
− Auto
The switching mode determines whether selected interlocking conditions will be acti-
vated or deactivated at the time of the switching operation.
The following switching modes are defined:
Current Switch-
ing Authority
Status
Switching
Authority
DIGSI
Command issued
Locally
Command issued from
SAS or SCADA
Command issued from
DIGSI
LOCAL Not
checked
Allowed Interlocked - switching
authority LOCAL
*2
Interlocked - DIGSI not
checked
LOCAL checked Allowed Interlocked -
switching
authority LOCAL
*2
Interlocked - switching
authority LOCAL
*2
REMOTE Not
checked
Interlocked - switching
authority REMOTE
*1
Allowed Interlocked - DIGSI not
checked
REMOTE checked Interlocked -
switching
authority DIGSI
*1
Interlocked -switching
authority DIGSI
*2
Allowed
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