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Mounting and Commissioning
3.3 Commissioning
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.
Test of the LEDs
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 illumi-
nated anymore by a protective function or by pressing the LED reset button.
Updating the Display
When the dialog box Hardware Test is opened, the present conditions of the hardware components at that
moment are read in and displayed.
An update is made:
• For the particular hardware component, if a command for change to another state was successful,
• For all hardware components if the Update button is clicked,
• For all hardware components with cyclical updating (cycle time is 20 sec) if the Automatic Update (20 sec)
field is marked.
Exiting the Procedure
To end the hardware test, click on Close. The dialog box closes. Thus, all the hardware components are set
back to the operating state specified by the plant states. The processor system is restarted, then the device is
ready for operation.
3.3.5
Checking for Breaker Failure Protection
General
If the device is equipped with the breaker failure protection and this function is used, the integration of this pro-
tection function into the system must be tested under practical conditions.
Because of the manifold applications and various configuration possibilities of the plant it is not possible to give
a detailed description of the necessary test steps. It is important to consider the local conditions and the pro-
tection and plant drawings.
Before starting the circuit tests it is recommended to isolate the circuit breaker of the feeder to be tested at both
ends, i.e. line disconnectors and busbar disconnectors should be open so that the breaker can be operated
without risk.
218
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
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