Indication Leds - ABB RES670 Technical Manual

Section 5
Local Human-Machine-Interface LHMI
5.5.2.3
90
• Green LED: unlit > no power; blinking > startup or abnormal situation (IED is not
in service); steady > IED is in service
• Yellow LED: unlit > no attention required; blinking > IED is in Testmode (IED is
not in normal service); steady > at least one of the signals configured to turn the
yellow LED on has been active
• Red LED: unlit > no attention required; blinking > user performs a common write
from PCM600; steady > at least one of the signals configured to turn the red LED
on has been active
The yellow and red status LEDs are configured in the disturbance recorder function,
DRPRDRE, by connecting a pickup or trip signal from the actual function to a
BxRBDR binary input function block using the PCM600, and configuring the setting
to Off,Pickup or Trip for that particular signal.

Indication LEDs

Operating modes
Collecting mode
• LEDs that are used in the collecting mode of operation are accumulated
continuously until the unit is acknowledged manually. This mode is suitable when
the LEDs are used as a simplified alarm system. When all three inputs (red, yellow
and green) are connected to different sources of events for the same function
block, collecting mode shows the highest priority LED color that was activated
since the latest acknowledgment was made. If a number of different indications
were made since the latest acknowledgment, it is not possible to get a clear view
of what triggered the latest event without looking at the sequence of events list. A
condition for getting the sequence of events is that the signals have been
engineered in the disturbance recorder.
Re-starting mode
• In the re-starting mode of operation each new pickup resets all previous active
LEDs and activates only those which appear during one disturbance. Only LEDs
defined for re-starting mode with the latched sequence type 6 (LatchedReset-S)
will initiate a reset and a restart at a new disturbance. A disturbance is defined to
end a settable time after the reset of the activated input signals or when the
maximum time limit has elapsed. In sequence 6, the restarting or reset mode
means that upon occurrence of any new event, all previous indications will be
reset. This facilitates that only the LED indications related to the latest event is
shown.
1MRK 511 408-UUS A
GUID-B67F1ED3-900B-4D34-8EEB-A3005999CE50 v4
Phasor measurement unit RES670 2.2 ANSI
Technical manual