GE P741, Technical Manual

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Settings P74x/EN ST/Na7
MiCOM P741, P742, P743 (ST) 4-
31
ST
Menu Text Default Setting Available Settings
COMMISSION TESTS
BB Trip Order No Operation No Operation / Apply Test /
Remove Test
Visible when “Test Mode“ is disabled
When the ‘Apply Test’ command in this cell is issued the Central Unit sends the trip orders
for the zone(s) set for operation (set to ‘1’) in the ‘BB Trip Pattern’ cell change state. After
the test has been applied the command text on the LCD will change to ‘No Operation’ and
the trip command will remain in the Test State until reset issuing the ‘Remove Test’
command. The command text on the LCD will again revert to ‘No Operation’ after the
‘Remove Test’ command has been issued.
Red LED Status 000000000000000000
This cell is an eighteen bit binary string that indicates which of the user-programmable
LEDs on the relay are illuminated with the Red LED input active when accessing the relay
from a remote location, a ‘1’ indicating a particular LED is lit and a ‘0’ not lit.
Green LED Status 000000000000000000
This cell is an eighteen bit binary string that indicates which of the user-programmable
LEDs on the relay are illuminated with the Green LED input active when accessing the relay
from a remote location, a ‘1’ indicating a particular LED is lit and a ‘0’ not lit.
DDB 31 - 0 11111111111111111111111111111111
Displays the status of DDB signals 0 – 31.
DDB 2047 - 2016 11111111111111111111111111111111
Displays the status of DDB signals 2016 – 2047.
1.3.6.2 P742 and P743
Menu Text Default Setting Available Settings
COMMISSION TESTS
Opto I/P Status 000000000000000000000000
This menu cell displays the status of the relay’s opto-isolated inputs as a binary string, a ‘1’
indicating an energized opto-isolated input and a ‘0’ a de-energized one
Relay O/P Status 0000000000000000
This menu cell displays the status of the digital data bus (DDB) signals that result in
energisation of the output relays as a binary string, a ‘1’ indicating an operated state and ‘0’
a non-operated state.
When the ‘Test Mode’ cell is set to ‘Enabled’, the ‘Relay O/P Status’ cell does not show the
current status of the output relays and hence can not be used to confirm operation of the
output relays. Therefore it will be necessary to monitor the state of each contact in turn.
Test Port Status 00000000
This menu cell displays the status of the eight digital data bus (DDB) signals that have been
allocated in the ‘Monitor Bit’ cells.
LED Status (P742 only) 00000000
This menu cell displays the status of the LEDs. that have been allocated in the ‘Monitor Bit’
cells, a ‘1’ indicating a particular LED is lit and a ‘0’ not lit.
Monitor Bit 1 Relay Label 01
0 to 2047
See PSL section for details
of digital data bus signals
The eight ‘Monitor Bit’ cells allow the user to select the status of which digital data bus
signals can be observed in the ‘Test Port Status’ cell or via the monitor/download port.