ABB Relion 670 Series RES670, Technical Manual

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Activating
signal
LED
IEC01000228_2_en.vsd
IEC01000228 V2 EN
Figure 14: Operating Sequence 1 (Follow-S)
If inputs for two or more colors are active at the same time to the same LED, the priority
color it shows is in accordance with the color described above. An example of the
operation when two colors are activated in parallel to the same LED is shown in
Figure
15 .
Activating
signal GREEN
LED
IEC09000312_1_en.vsd
G
R G
G
Activating
signal RED
IEC09000312 V1 EN
Figure 15: 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.
Section 5
1MRK 511 365-UUS A
Local Human-Machine-Interface LHMI
90 Phasor measurement unit RES670 2.1 ANSI
Technical manual