Hitachi 650 Series Operation Manual page 31

1MRK500128-UEN Rev. H
Table 6:
LED state
OFF
ON
Flashing
Table 7:
LED state
OFF
ON
Flashing/blinking
Table 8:
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.
650 series
Operation manual
Ready LED (green)
Description
Auxiliary supply voltage is disconnected.
Normal operation.
Internal fault has occurred.
Start LED (yellow)
Description
Normal operation.
A protection function has started and an indication message is displayed.
The start 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
When IED is in simulation mode, yellow LED remains flashing/blinking
When IED IEC61850 mod value is set other than its normal value, yellow LED
remains flashing/blinking
The IED is in test mode and protection functions are blocked, or the IEC 61850
protocol is blocking one or more functions.
The indication disappears when the IED is no longer in test mode and blocking is
removed. The blocking of functions through the IEC 61850 protocol can be reset in
Main menu/Test/Reset IEC61850 Mod. The yellow LED changes to either ON or
OFF state depending on the state of operation.
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.
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Section 4
Overview
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