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3 Mounting and Commissioning
Figure 3-20
Changing the Oper-
To change the operating state of a hardware component, click on the associated
ating State
switching field in the Scheduled column.
Before executing the first change of the operating state the password No. 6 will be re-
quested (if activated during configuration). After entry of the correct password a con-
dition change will be executed. Further state changes remain enabled until the dialog
box is closed.
Test of the Binary
Each individual output relay can be energized allowing a check of the wiring between
Outputs
the output relay of the 7SD5 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 one of the
output relays is initiated, all output relays are separated from the internal device func-
tions, and can only be operated by the hardware test function. This means, for exam-
ple, 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 execut-
• Each output relay must be tested via the corresponding Scheduled cell in the
• Finish the testing (see margin heading below „Exiting the Procedure"), so that
Test of the Binary
To test the wiring between the plant and the binary inputs of the 7SD5 the condition in
Inputs
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.
482
Testing of the binary inputs and outputs — example
ed without any danger (see above under DANGER!).
dialog box.
during further testings no unwanted switchings are initiated.
7SD5 Manual
C53000-G1176-C169-1
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