Siemens siprotec 7SA6, Manual

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Installation and Commissioning
8-52
7SA6 Manual
C53000-G1176-C156-2
Test of the LED’s The LED’s may be tested in a similar manner to the other input/output components.
As soon as the first state change of any LED has been triggered, all LEDs are sepa-
rated from the internal device functionality and can only be controlled via the hardware
test frunction. This implies that no LED can be switched on anymore by e.g. a protec-
tion function or operation of the LED reset key.
Updating the
Display When the dialog box
Hardware Test
is opened, the present conditions of the hard-
ware components at that moment are read in and displayed. An update occurs:
−
for each harware component, if a command to change the condition is successfully
performed,
−
for all hardware components if the
Update
button is clicked,
−
for all hardware components with cyclical updating if the
Automatic Update
(20sec)
field is marked.
Exiting the
Procedure To end the hardware test, click on
Close
. The dialog box closes. The device becomes
unavailable for a brief start-up period immediately after this. Then all hardware com-
ponents are returned to the operating conditions determined by the plant settings.
8.3.4 Checking Analog Outputs
7SA6 can be equipped with up to 2 analog outputs. In case analog outputs are avail-
able and used, their effect must be tested.
Since different measured values or results of the fault location are output, the check
depends on the values used. They must be generated, e.g. with a secondary test
equipment.
Please make sure that the corresponding values are output correctly at their destina-
tion.