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Operation
indicators
8
Each protection stage has its own red start and
trip operation code, presented as a number on
the display. In addition, at the right bottom
corner of the relay module, there is a TRIP in-
dicator that is shared by all the protection stages.
The switchgroup SGR6 is used for program-
ming this TRIP indicator.
The operation code indicating tripping and the
red TRIP indicator remain lit, when the relay
has delivered a trip signal. Thus the tripping
stage is easily identified. The trip code and the
operation indicator remain lit, even though the
stage that caused tripping resets, and have to be
separately reset. The start indicating code num-
bers, on the other hand, go out once the pro-
tection stage resets. Should the stage provide a
Operation code
Parameter V10
1
2
3
4
5
6
7
8
9
A
Once the self-supervision system of the relay has
detected a permanent fault, the self-supervision
alarm indicator IRF is lit. At the same time, the
relay module delivers a control signal to the self-
supervision contacts of the relay assembly. In
addition, in most fault cases, a fault code con-
trip signal before resetting, the start indicating
numbers turn to indicate tripping. When re-
quired, the start indicating numbers can be set
to remain start indicators (switches SGF1...4/4).
The operation indicators, which require sepa-
rate resetting, are reset via the push-buttons on
the front panel of the relay, with an external
control signal, or over the serial communica-
tion bus, see the table in "Description of opera-
tion". Non-reset operation indicators do not
affect the operation of the relay module.
The table below gives an explanation of the sym-
bols of the start and trip indicating code num-
bers presented on the display and with the se-
rial communication parameter V10.
Symbol
1
Stage 1 Start
2
Stage 1 Trip
3
Stage 2 Start
4
Stage 2 Trip
5
Stage 3 Start
6
Stage 3 Trip
7
Stage 4 Start
8
Stage 4 Trip
9
Rec. Due
10
Rec. Over
sisting of a red number one (1) and a green code
number appears on the display of the module.
This fault code, which cannot be removed from
the display by resetting, gives a fault diagnosis.
The code number should always be stated, when
service is ordered.
Explanation
Stage 1 started
Stage 1 tripped
Stage 2 started
Stage 2 tripped
Stage 3 started
Stage 3 tripped
Stage 4 started
Stage 4 tripped
Recovery function in progress,
timer is running
Recovery function operated
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