ABB REG650 Technical Manual page 61

1MRK 502 034-UEN -
Technical Manual
disturbance is defined to end a settable time after the reset of the activated
input signals or when the maximum time limit has elapsed.
Acknowledgment/reset
• From local HMI
• The active indications can be acknowledged/reset manually. Manual
acknowledgment and manual reset have the same meaning and is a
common signal for all the operating sequences and LEDs. The function
is positive edge triggered, not level triggered. The acknowledgment/reset
is performed via the
• From function input
• 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.
• Automatic reset
• 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.
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:
Local Human-Machine-Interface LHMI
button and menus on the LHMI.
Section 4
55