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Control in Operation
6.3
Testing the status of the binary inputs/outputs
Testing the
binary inputs
Testing the signal
and command
relays
6-6
The 7SS60 differential protection includes a testing program that allows to check and
display the status of the binary inputs and outputs.
If the protection is operated from a personal computer using the DIGSI communication
software, the test addresses are identified by a four-digit number. This number will be
stated in brackets in the section below.
The block $'',7,21 )81&7,21 is accessed from the initial state of the device by
pressing three times the
block 7,0( 6(77,1*. Pressing the
().
Move one level higher with the
inputs and outputs ,2 67$7 ().
Press
once again to move to the address for testing the status of the binary inputs
%,67$7 ().
After actuating the ENTER key E you are asked whether you want to interrogate the
status of the binary inputs. If you press the N key, the action is aborted, and you can
move to the next test item with
If you actuate Y/J, the status of the 3 binary inputs (BI) is shown as a matrix which has
the following meaning:
: BI 1 is activated (energized)
: BI 2 is activated (energized)
: BI 3 is activated (energized)
: The BI is not activated
%,67$7
Press
to move to the address for testing the status of the signal and command
relays 5(67$7 ().
After actuating the ENTER key E you are asked whether you want to interrogate the
status of the signal and command relays. If you press the N key, the action is aborted,
and you can move to the next test item with
If you actuate Y/J, the status of the 2 signal relays (S) and of the 2 command relays
(T) is shown as a matrix which has the following meaning:
: S 1 or T 1 has picked up
: S 2 or T 2 has picked up
: The relay has not picked up
RE-STAT
S1-- T-2
key. Press
to move to the next operation level with the
key brings you now to the block 7(67 $,'6
key to access the block for testing the status of the
.
In this example, the binary inputs 1 and 2 are activated,
whereas binary input 3 is not energized.
In this example, the signal relay S 1 and the command relay
T 2 have picked up.
.
E50417-G1176-C132-A2
7SS60 Manual
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Troubleshooting
