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Mounting and Commissioning
3.3 Commissioning
Test of the Output Relays
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Each individual output relay can be energized allowing a check of the wiring between the output relay of the
7UT6x and the plant, without having to generate the message that is assigned to the relay. As soon as the first
change of state for any 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:
• Make sure that the switching operations caused by the output relays can be executed without any danger
(see above under DANGER!).
• Each output relay must be tested via the corresponding Scheduled field of the dialog box.
• Finish the testing (see margin heading below „Exiting the Procedure“), so that during further testings no
unwanted switchings are initiated.
Test of the Binary Inputs
Test of the LEDs
Updating the Display
To test the wiring between the plant and the binary inputs of the 7UT6x the condition in the system which
initiates the binary input must be generated and the response of the device checked.
To do so, open the dialog box Hardware Test again to view the physical position of the binary input. The
password is not yet required.
Proceed as follows in order to check the binary inputs:
• Each state in the system which causes a binary input to pick up must be generated.
• Check the reaction in the Status column of the dialog box. To do this, the dialog box must be updated. The
options may be found below under the margin heading „Updating the Display“.
• Finish the test sequence (see margin heading below „Exiting the Procedure“).
If, however, the effect of a binary input must be checked without carrying out any switching in the system, it is
possible to trigger individual binary inputs with the hardware test function. As soon as the first state change of
any binary input is triggered and the password No. 6 has been entered, all binary inputs are separated from the
system and can only be activated via the hardware test function.
The light-emitting diodes (LEDs) 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 separated from the internal device
functionality and can only be controlled via the hardware test function. This means e.g. that no LED is
illuminated anymore by a protective function or by pressing the LED reset button.
When the dialog box Hardware Test is opened, the present conditions of the hardware components at that
moment are read in and displayed.
SIPROTEC, 7UT6x, Manual
C53000-G1176-C230-2, Release date 06.2012