ABB Relion 650 Series Operation Manual page 36

Section 4
650 series overview
Table 13:
LED state
Off
On
Flashing
Table 14:
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.
Table 15:
LED state
Off
On
Flashing
30
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
Alarm indications
Description
Normal operation. All activation signals are off.
• Follow-S sequence: The activation signal is on.
• LatchedColl-S sequence: The activation signal is on, or it is off but the indication has not
been acknowledged.
• LatchedAck-F-S sequence: The indication has been acknowledged, but the activation signal
is still on.
• LatchedAck-S-F sequence: The activation signal is on, or it is off but the indication has not
been acknowledged.
• LatchedReset-S sequence: The activation signal is on, or it is off but the indication has not
been acknowledged.
• Follow-F sequence: The activation signal is on.
• LatchedAck-F-S sequence: The activation signal is on, or it is off but the indication has not
been acknowledged.
• LatchedAck-S-F sequence: The indication has been acknowledged, but the activation signal
is still on.
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1MRK 500 093-UUS A
650 series
Operation manual