Siemens siprotec 7SA6, Manual

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Configuration
5-29
7SA6 Manual
C53000-G1176-C156-2
In addition, a single point indication cannot be configured to a binary input and to CFC
as a source at the same time. In this case, an error message would be displayed. Click
on
OK
, and select another configuration.
Figure 5-26
Error message resulting from double configuration
If a double point indication (DP) is configured to one binary input (e.g. feedback indi-
cations from switching devices), the next binary input is also set in the matrix. If this
configuration is undone, the second binary input is automatically de-configured. The
order of the binary input channels is already defined. The trip command is always fol-
lowed by the close command.
If a transformer tap indication is allocated to a binary input (n), further binary inputs
(n+1...) may also be allocated. The total of it is identical with the number of the bits
configured for the transformer tap indications. If one of the configurations is reset, all
other configurations to binary inputs depending on the one deleted, will automatically
be set to
not allocated
.
Configuring a
Function Key as a
Source The four function keys on the front of the relay may also be configured as sources in
order to establish a link using CFC. In this situation, each function key may be linked
with one single internal indication. A function key may be occupied because it has al-
ready been set as an operating function for the relay. As delivered from the factory,
the device’s function keys F1, F2, and F3 are pre-configured:
In order to configure a new indication, select one of the options (OPEN/CLOSE, ON/
OFF, etc.) from the indication group in the information catalog and drag it to the left
side of the matrix. Upon release, a new row appears in the matrix. If the mouse is po-
sitioned at the intersection of this row with column F, and the right mouse button is
pressed, a context menu opens (Figure 5-27) in which the function key may be set as
a source by clicking the proper choice
.
F1 operating messages
F2 primary measured values
F3 overview of the last eight fault messages
Note:
When an indication is configured to a function key, its factory-assigned function is de-
leted. Re-establishment of the factory default function of the F-keys is only possible
by initializing the relay with a new factory parameter set created within DIGSI
®
4. All
device settings have to be re-entered.