ABB Relion 670 series Engineering Manual page 63

1MRK511240-UEN B
670 series
Engineering Manual
IEC09000656 V1 EN
Figure 39: LHMI: Function key operation mode
The LEDs have a number of different operation modes, see
• Follow-S
• The LED illumination follows the status of the signal. The LED
illuminates steady (S).
• Follow-F
• The LED illumination follows the status of the signal. The LED
illuminates flashing (F).
• LatchedAck-F-S
• The LED latches the signal change OFF-ON and flashes (F) until it is
acknowledged.
• When the signal is still ON at the time the signal is acknowledged the
LED changes to steady (S) mode.
• When the signal has already changed to OFF before the time it is
acknowledged, the LED turns to OFF.
• LatchedAck-S-F
• The same as LatchedAck-F-S but the LED starts with steady state and
flashes after acknowledgment.
• LatchedColl-S
• The LED illuminates in all cases in steady mode only
• The LED latches a signal change from OFF-ON until it is acknowledged
by the operator.
• The LED stays in steady mode when it is reset and the signal is still in
ON state.
• The LED is OFF only after the signal has changed to OFF state AND it
is reset by the operator via 'Clear' operation.
• LatchedReset-S
• This mode is used for all LEDs that are used to indicate a disturbance.
The LEDs will stay in the last state after the disturbance run time until
they are reset after a defined time.
• The timers are set in PST in the function block LEDGEN.
Section 6
Local HMI engineering
IEC09000656-1-en.vsd
Figure 40:
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