ABB Relion 650 Series Technical Manual page 68

Section 4
Local Human-Machine-Interface LHMI
Activating
signal
LED
IEC01000228 V2 EN-US
Figure 15:
If inputs for two or more colors are active at the same time to one LED the priority is as described
above. An example of the operation when two colors are activated in parallel is shown in
Activating
signal GREEN
Activating
signal RED
LED
IEC09000312 V1 EN-US
Figure 16: Operating sequence 1, two colors
Sequence 2 (Follow-F)
This sequence is the same as sequence 1, Follow-S, but the LEDs are flashing instead of showing
steady light.
Sequence 3 (LatchedAck-F-S)
This sequence has a latched function and works in collecting mode. Every LED is independent of
the other LEDs in its operation. At the activation of the input signal, the indication starts flashing.
After acknowledgment the indication disappears if the signal is not present any more. If the signal
is still present after acknowledgment it gets a steady light.
Activating
signal
LED
Acknow.
IEC01000231 V1 EN-US
Figure 17:
When an acknowledgment is performed, all indications that appear before the indication with
higher priority has been reset, will be acknowledged, independent of if the low priority indication
appeared before or after acknowledgment. In
lower priority becomes activated after acknowledgment has been performed on a higher priority
signal. The low priority signal will be shown as acknowledged when the high priority signal resets.
62
Operating sequence 1 (Follow-S)
G
Operating sequence 3 (LatchedAck-F-S)
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IEC01000228_2_en.vsd
G
R G
IEC09000312_1_en.vsd
en01000231.vsd
Figure 18 it is shown the sequence when a signal of
1MRK 506 326-UUS B
GUID-107FE952-3B4C-4C01-831A-3147E652327C v2
Figure
SEMOD56072-47 v1
SEMOD56072-50 v1
GUID-CC607709-5344-4C88-AA97-6395FD335E55 v2
Line distance protection REL650
Technical manual
16.