ABB Relion 650 Series Technical Manual page 67

1MRK 506 326-UUS B
• From function input
•
• Automatic reset
•
Operating sequence
The sequences can be of type Follow or Latched. For the Follow type the LED follow the input
signal completely. For the Latched type each LED latches to the correspond¬ing input signal until
it is reset.
The figures below show the function of available sequences selectable for each LED separately.
For sequence 1 and 2 (Follow type), the acknowledgment/reset function is not applicable.
Sequence 3 and 4 (Latched type with acknowledgement) are only work¬ing in collecting mode.
Sequence 5 is working according to Latched type and collecting mode while sequence 6 is working
according to Latched type and re-starting mode. The letters S and F in the sequence names have
the meaning S = Steady and F = Flash.
At the activation of the input signal, the indication obtains corresponding color corresponding to
the activated input and operates according to the selected sequence diagrams below.
In the sequence diagrams the LEDs have the following characteristics:
= No indication
= Green
G
IEC09000311 V1 EN-US
Figure 14: Symbols used in the sequence diagrams
Sequence 1 (Follow-S)
This sequence follows all the time, with a steady light, the corresponding input signals. It does not
react on acknowledgment or reset. Every LED is independent of the other LEDs in its operation.
Line distance protection REL650
Technical manual
sequences and LEDs. The function is positive edge triggered, not level triggered. The
acknowledgment/reset is performed via the
The active indications can also be acknowledged/reset from an input, ACK_RST, to the
function. This input can for example be configured to a binary input operated from an
external push button. The function is positive edge triggered, not level triggered. This
means that even if the button is continuously pressed, the acknowledgment/reset only
affects indications active at the moment when the button is first pressed.
The automatic reset can only be performed for indications defined for re-starting mode
with the latched sequence type 6 (LatchedReset-S). When the automatic reset of the
LEDs has been performed, still persisting indications will be indicated with a steady
light.
= Steady light
= Yellow
Y
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button and menus on the LHMI.
= Flash
= Red
R
IEC09000311.vsd
Section 4
Local Human-Machine-Interface LHMI
GUID-DFCA880B-308C-4334-94DF-97C7765E8C13 v2
SEMOD56072-39 v2
61