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DIR 1000587R0002 (Version 02)
3.4.2. Push-buttons
A push-button panel with 4 buttons is used to access the menus on the display of the trip unit. There is also an independent
button at the side of the display, with various functions (iTest).
Key Name Description
ESC
- Press ESC from the default page to access the main menu
- Press ESC from within the menus to return to the previous level
ENTER
- Press ENTER from within the menus to access the selected level or parameter
- Press ENTER to confi rm the option selected
UP
- Press UP or DOWN from the default page to access the pages with the available measurements (cur-
rent values)
- Press UP or DOWN within the menus to scroll the menu options
- Press UP or DOWN within the parameter or setting areas to change their values
DOWN
iTest
- Press iTest from the default page to access the area with the information pages concerning the trip unit,
the circuit-breaker and the last trip recorded.
- Press iTest after the CB has tripped because of an overcurrent event, to reset the TRIP state of the trip
unit (the display is redirected to the default page and the SW register corresponding to Trip is reset)
- Press iTest when the trip unit is off to obtain a description of the last event that led to the trip unit being
shut off (function available within 48h from shut-off).
ATTENTION: When parameters whose adjustment includes a large number of options or values are edited, the UP
or DOWN buttons can be pressed and held down so as to scroll through the options faster and speed up the
editing operations.
3.4.3. Display
LSIG-MM are equipped with a 128x64 pixel graphic LCD display where the operator can view measurements and signals, and
access the menus with all the settings.
The degree of contrast of the menu display can be adjusted by selecting the Settings menu and Display Contrast parameter.
The display has 2 operating modes (the conditions are described in par. 3.3.8):
- Low Power: the display is fi xed and appears as shown in the fi gure below:
Low Power
1
2
3
4
5
- Full Power: various menus and information areas can be accessed with the buttons in this confi guration: the main page is dis-
played (default page) during normal operation, and appears as shown in the fi gure below:
6
2
3
7
5
The measurements area or the menu area are accessed from the default page. All the options within the menu are displayed as
shown in the fi gure below:
2
Settings
Measurements
Protections
Protections settings
8
9
10
11
5
Access to the menus and the push-button panel is active in the Full Power mode. Consult the dedicated chapter for details about
how to browse the menus (See par. 3.5).
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