Siemens SIPROTEC 7SS523 V3.2 Manual page 279

Changing the oper-
ating state
Testing the output
relays
Testing the binary
inputs
Figure 7-9 Dialog box devices in/outputs − Example
To change the operating state of a hardware component, click the corresponding
panel in the column Nominal.
Before executing the first change of the operating state the password No. 6 is demand-
ed (provided that it has been activated). After entering the correct password, the op-
erating state change is executed. Further state changes remain released until the di-
alog box is closed.
You can energize every single output relay to check the wiring between the output re-
lay of the central unit and the system without having to create the alarm allocated to
it. As soon as you have initiated the first state change for any output relay, all output
relays are disconnected from the functionality of the device 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.
Make sure that the operations initiated by the output relays can be made without
any dangers.
Test every output relay via the corresponding Nominal box of the dialog box.
Finish the tests (see margin title below "Finishing the process"), so that during fur-
ther testing no unwanted switching operations are initiated.
To check the wiring between the plant and the binary inputs of the central unit, you
must create in the plant itself the cause for an external and read out the effect at the
device itself.
To do so, open the dialog box Test devices in and outputs again to view the phys-
ical position of the binary input. The password is not yet necessary.
Activate in the plant each of the functions which cause an external trip signal at the
binary inputs
Check the reaction in the Actual column of the dialog box. To do so you must
update the dialog box. You will find the possibilities below under the margin heading
"Updating the display".
7SS52 V4 Manual
C53000-G1176-C182-1
Commissioning
263