ABB REJ 523, Техническое справочное руководство

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ABB Substation Automation
Products and Systems
Technical Reference Manual REJ 523
1MRS750940-MUM
37
4.1.9.2 Event codes
Special codes have been determined to represent certain events, such as start and
operation of protection stages and different states of output signals. The event codes
can be transferred to higher system levels via the rear connector.
Events E1…E51 are stored in the event register of the relay. The maximum capacity
of the register is 60 events. Under normal conditions the register is empty.
The content of the register can be read with L command 5 events at a time. Using the
L command erases the read events from the register. Should a fault occur, for example
in data communication, these events can be re-read with B command. If needed, the B
command can also be repeated.
Events to be included in event reporting are marked with a multiplier 1. The event
mask is formed by the sum of the weighting factors of all those events that are to be
included in event reporting.
Table 4.1.9.2-1 Event masks
Event mask Code Setting range Default setting
V155 E1...E8 0...255 85
V156 E9...E16 0...255 3
V157 E31 0 or 1 1
Table 4.1.9.2-2 Event codes E1…E8
Code Event Weighting factor Default value
E1 Starting of stage I> 1 1
E2 Starting of stage I> reset 2 0
E3 Tripping of stage I> 4 1
E4 Tripping of stage I> reset 8 0
E5 Starting of stage I>> 16 1
E6 Starting of stage I>> reset 32 0
E7 Tripping of stage I>> 64 1
E8 Tripping of stage I>> reset 128 0
Default value of event mask V155 85