Installation and Commissioning
268
7SS52 V4 Manual
C53000-G1176-C182-3
7.3.3 Checking the Switching States of the binary Inputs/Outputs
With DIGSI you can purposeful selectively control individual binary inputs, output re-
lays and LEDs of the central unit and the bay unit. In this way you can check, e.g. dur-
ing the commissioning, the correct connections to the system.
7.3.3.1 Central Unit
vom PC mit DIGSI The hardware test can be made with DIGSI in the operational mode Online:
 Double-click the directory Online. The operating functions for this device will ap-
pear.
 Click Test. The available functions are displayed on the right.
 Double-click in the list Test device inputs and outputs. The dialog box with this
name is opened (see Figure 7-7, page 269).
Structure of the
dialog box
The dialog box is divided into three groups: BI for binary inputs, BO for binary outputs
and LED for LEDs. On the left of each group is an accordingly labelled panel. By dou-
ble-clicking these panels you can show or hide the individual information of the select-
ed group.
In the column Actual the current status of the particular hardware component is dis-
played. by symbols The actual states of the binary inputs and outputs are displayed
by the symbol of opened and closed switch contact those of the LEDs by a symbol of
an dark or shining LED.
The opposite state of each element is displayed in the column Nominal. The display
is made in plain text.
The column on the far right displays commands or annunciations which are allocated
to the particular hardware component.
Danger!
A changing of switching states by means of the test function causes a real change of
the operating state at the SIPROTEC device. The switchgear (e.g. circuit breakers)
can be switched by this!
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