• 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.
5.5.2.3 Indication LEDs
Operating modes
GUID-B67F1ED3-900B-4D34-8EEB-A3005999CE50 v4
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.
Acknowledgment/reset
GUID-E6727E8F-C28B-4295-AE21-BC5643363805 v3
• From local HMI
• The active LED 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
button and menus on
the LHMI.
• From function input
• The active LED indications can also be acknowledged/reset via an input, CLRLEDS, to the
function block LHMICTRL. This input can for example be configured to a binary input
1MRK 502 066-UUS B Section 5
Local Human-Machine-Interface LHMI
95
Technical manual
To Next Page
Loading...
