Siemens 6MD85, Manual

Page: 346 / 1256

authority and the switching mode. The outputs
Switching authority
and
Switching mode
indicate the
states only for this switching device.
When activating
Specific sw. authorities
, an individual specific switching authority for this switching
device is configured. Additional parameters are displayed.
[sc_Parameters FB control all additional options, 1, en_US]
Figure 6-37 Parameters of the FB Control with all Additional Options
The functionality of the specific switching authority for the individual switching device and the significance of
the additional parameters is identical to the operating mode of the central specific switching authority. Addi-
tional signals are displayed in the Control function block.
[sc_Specific sw authority changeable per sw device, 1, en_US]
Figure 6-38 Specific Switching Authority, Modifiable for each Switching Device
Switching Direction (Set = Actual)
With this check, you avoid switching a switching device into a state that has already been achieved. For
instance, before a trip command is issued to a circuit breaker, its current position is determined. If this circuit
breaker is already in the
Off
position, no command is issued. This is logged accordingly.
Switchgear Interlocking Protection
Switchgear interlocking protection means avoiding maloperation by checking the bay and substation inter-
locking and thus preventing equipment damage and personal injury. The interlocking conditions are always
system-specific and for this reason are stored as CFC charts in the devices.
SIPROTEC 5 devices recognize 2 different types of interlocking conditions:
•
Normal interlocking conditions:
These can be revoked by changing the switching mode to non-interlocked.
Control Functions
6.3 Control Functionality
346 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017