ABB Relion 650 Series Applications Manual page 61

1MRK 505 287-UUS B
Table 4:
LED state
Off
On
Flashing
Table 5:
LED state
Off
On
Flashing
Table 6:
LED state
Off
On
Alarm indicators
The 15 programmable three-color LEDs are used for alarm indication. An individual alarm/status
signal, connected to any of the LED function blocks, can be assigned to one of the three LED
colors when configuring the IED.
Busbar protection REB650
Application manual
Normal LED (green)
Description
Auxiliary supply voltage is disconnected.
Normal operation.
Internal fault has occurred.
PickUp LED (yellow)
Description
Normal operation.
A protection function has picked up and an indication message is displayed.
• If several protection functions Pickup within a short time, the last Pickup is
indicated on the display.
A flashing yellow LED has a higher priority than a steady yellow LED.
The IED is in test mode and protection functions are blocked.
• The indication disappears when the IED is no longer in test mode and
blocking is removed.
Trip LED (red)
Description
Normal operation.
A protection function has tripped and an indication message is displayed.
• The trip indication is latching and must be reset via communication or by
pressing
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Section 5
Local human-machine interface
55