1MDU07205-YN rev. F
REF601 CEI
User’s manual
36
Menu structure & LHMI Navigation
5.1.3 Indication LEDs
The LHMI includes three protection indicators above the display: Ready, Start and
Trip. Additionally there are also 2 LEDs for phase & earth fault indication on front of
the LHMI.
5.2 LHMI menu navigation
5.2.1 Default screen
The default view of the relay displays all the phase and earth currents which is
indicated in Fig. 9. The relay returns to default screen after a delay of 60 seconds if
no key is pressed for that duration. Below screen will be refreshed at specifi c display
rate, to display dynamic current changes. Current values displayed in this view for
phase current is in “Amp” and for earth current it is in “In” as shown in following
fi gure.
Fig. 9 – Default screen of relay REF601
5.2.2 Main menu
In default screen, by pressing any key the user always get back to the Main Menu.
Different views / sub-menus can be seen and selected via Main Menu. In default
screen, by pressing any key the user always get back to the Main Menu. However
once in menu navigation, escape key should be pressed to return to the Main
Menu. After time-out the default view is activated displaying all the phase and earth
currents.
Figure 10 shows the main menu of the relay.
P h a s e : X X X X X A m p
E a r t h : X X . X X X I n
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