Event Codes - ABB REJ 527 Technical Reference Manual

REJ 527
4.1.9.3.
48
Directional or Non-Directional Earth-Fault Relay
Technical Reference Manual

Event codes

Special codes have been determined to represent certain events, such as start and
tripping of protection stages and different states of output signals.
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 contents of the register can be read using the L command, five events at a time.
Using the L command erases the previously read events from the register, with the
exception of events E50 and E51 which have to be reset using the C command.
Should a fault occur, for example in data communication, these events can be re-read
using the B command. If needed, the B command can also be repeated.
Events to be included in the event reporting are marked with multiplier 1. The event
mask is formed by the sum of the weighting factors of all those events which are to
be included in the event reporting.
Table 4.1.9.3-1 Event masks
Event mask Code
V155 E1...E8
V156 E9...E12
V157 E13...E20
V158 E31
Table 4.1.9.3-2 Event codes E1...E8
Code Event
E1 Start of stage U
E2 Start of stage U
E3 Trip of stage U
0b
E4 Trip of stage U
0b
E5 Start of stage I
0
E6 Start of stage I
0
E7 Trip of stage I > or U
0
E8 Trip of stage I > or U
0
Default value of event mask V155
Table 4.1.9.3-3 Event codes E9...E12
Code Event
E9 Start of stage I
0
E10 Start of stage I
0
E11 Trip of stage I >> or U
0
E12 Trip of stage I >> or U
0
Default value of event mask V156
Setting range
0...255
0...15
0...255
0 or 1
>
0b
> reset
0b
>
> reset
> or U >
0
> or U > reset
0
>
0
> reset
0
Weighting factor
>> or U >> 1
0
>> or U >> reset 2
0
>> 4
0
>> reset 8
0
1MRS 750616-MUM
Default setting
85
5
3
1
Weighting factor Default value
1 1
2 0
4 1
8 0
16 1
32 0
64 1
128 0
85
Default value
1
0
1
0
5