Hitachi Relion 670 Series Quick Start Manual page 35

1MRK500129-UEN Rev. J
Table 12:
LED state
OFF
ON
Flasing
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 13:
LED state
OFF
ON
Flashing
670/650 series
Quick start guide
Trip LED (red)
Description
Normal operation.
A protection function has tripped. An indication message is displayed if the auto-
indication feature is enabled in the local HMI.
The trip indication is latching and must be reset via communication, LHMI or binary
input on the LEDGEN component. To open the reset menu on the LHMI, press
Configuration mode.
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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Section 6
LHMI overview
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31