Siemens SIPROTEC 7ST6, Руководство пользователя, Страница: 245 / 356

3.3 Commissioning
245
7ST6 Manual
E50417-G1176-C251-A3
Figure 3-22 Test of the binary inputs and outputs – example
Changing the Oper-
ating State To change the operating state of a hardware component, click on the associated
button in the
Scheduled column.
Before executing the first change of the operating state the password No. 6 is demand-
ed (provided that it has been activated). After entry of the correct password a change
of state will be executed. Further state changes remain possible while the dialog box
is open.
Test of the Output
Relays Each individual output relay can be energized allowing a check of the wiring between
the output relays of the protection device and the system, without having to generate
the indication that is assigned to the relay. As soon as the first change of state for any
one of the output relays is initiated, all output relays are separated from the internal
device functions, and can only be operated by the hardware test function. This means
that, e.g. a TRIP command coming from a protection function or a control command
from the operator panel to an output relay cannot be executed.
Proceed as follows in order to check the output relay:
• Ensure that the switching of the output relay can be executed without danger (see
above under DANGER!).
• Each output relay must be tested via the corresponding Scheduled column in the
dialog box.
• The test sequence must be terminated (refer to margin heading „Exiting the Proce-
dure“), to avoid the initiation of inadvertent switching operations by further tests.
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