Operating Sequence - Hitachi Relion 650 Series Technical Manual

1MRK 511 557-UEN Rev. A
From function input
Active indications can also be acknowledged/reset from the RESET input to the LEDGEN 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.
Automatic reset
Automatic reset can only be performed for indications defined to operate in re-starting mode with
latched sequence type 6 (LatchedReset-S). When automatic reset of the LEDs has been performed,
still persisting indications will be indicated with a steady light.
5.5.6.3

Operating sequence

The sequences can be of type Follow or Latched. For the Follow type the LED follow the input signal
continuously. For the Latched type the LED is switched ON whenever the corresponding input signal
is activated, and remains ON until the active indications are 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 working 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.
Upon activation of the input signal, LED is switched ON in the 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
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Figure 10:
Sequence 1 (Follow-S)
This sequence follows all the time, with a steady light, the corresponding input signals. It does not
react to acknowledgment or reset. Every LED is independent of the other LEDs in its operation.
Activating
signal
LED
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Figure 11:
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
Technical Manual
= Steady light
= Yellow
Y
Symbols used in the sequence diagrams
Operating Sequence 1 (Follow-S)
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= Flash
= Red
R
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IEC01000228_2_en.vsd
Section 5
Local HMI
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Figure 12.
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