Siemens siprotec 7SA522 User Manual page 447

7SA522 Manual
C53000-G1176-C119-2
The switching authority is first transferred to DIGSI
dow shown in Figure 7-45 is opened. The configuration matrix discussed in Section
5.2 determines the control devices that have information displayed in this field.
Figure 7-45 Dialog Box for Performing Control in DIGSI
A description of the switching device is displayed in the left column of the dialog field.
This represents the contents of the /RQJ 7H[W column within the configuration ma-
trix.
The actual position of the switch is displayed in the 6WDWXV column (23(1, &/26(,
,QWHUPHGLDW). The switching possibilities are displayed in the 6FKHGXOHG column.
Four control fields are shown in the right part of the dialog field. If a check mark is dis-
played in one of these fields, $% (Access Block = Block Input Acquisition), 7% (Trans-
mission Block = Serial Interface Blocked), 75 (Manual Overwriting), and &% (Chatter
Block), the associated block function is set or the feedback indications of the device
have been simulated.
Normally, operating devices are switched in the LQWHUORFNHG 1RUPDO mode.
The configured interlocking conditions are checked before a control command is car-
ried out. As soon as a control command is entered in the 6FKHGXOHG column, Pass-
word No. 1 for interlocked switching is requested for safety reasons. Further control
possibilities remain possible until the control dialog field is closed, or the switching
mode is changed.
If a control command is successfully executed, then the display of the actual condition
of the affected switch is updated in the window.
Operating resources can be switched without interlocking condition checks; however,
the correct Password No. 2 for non-interlocked switching must be entered. Mark the
option 8QORFN by clicking on the field.
DANGER!
Only highly qualified personnel who have an exact knowledge of the power sys-
tem conditions shall perform non-interlocked switching. Inappropriate switch-
ing operations can lead to death, serious personnel injury and property dam-
age.
Control During Operation
®
4 at the moment the control win-
®
4 (example)
7-39