3.2.4 Local HMI functionality
3.2.4.1 Protection and alarm indication
Protection indicators
The protection indicator LEDs are Ready, Start and Trip.
Table 8: Ready LED
LED state Description
Off Auxiliary supply voltage is disconnected.
On Normal operation.
Flashing Internal fault has occurred, the protection relay is in test mode, or the
protection relay is in the test and blocked mode. Internal faults are
accompanied by an indication message.
Table 9: Start LED
LED state Description
Off Normal operation.
On A protection function has started and an indication message is displayed.
• If several protection functions start within a short time, the last start
is indicated on the display.
Flashing
A protection function is blocked, or the protection relay is in the test and
blocked mode, or the protection relay is in the blocked mode.
• The blocking indication disappears when the blocking is removed or
when the protection function is reset.
Table 10: Trip LED
LED state
Description
Off Normal operation.
On 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 .
• If several protection functions trip within a short time, the last trip is
indicated on the display.
Alarm indicators
The 10 matrix programmable LEDs are used for alarm indication.
Section 3 2NGA000823 A
REX610 overview
18 REX610
Operation Manual
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