28 Chapter 4 Operator Control And Display Panel
Liebert APM 90 Integrated Modular UPS User Manual
4.1.4
LCD And Menu Keys
The operator control and display panel provides an LCD and five menu keys (F1, F2, F3, F4, F5). The menu keys
are described in Table 4-5.
Table 4-5
Menu key description
Function 1
Function 2
F1
F2
F3
F4
ESC
Escape
Left
Up
Right
Down
Enter
Key
F5
HOME
Function 1
Key
F1
F2
F3
F4
F5
Function 2
HOME
Escape
Left
Right
Enter
UP
Down
ESC
Providing 320
×
240 dot matrix graphic display, the user-friendly and menu-driven LCD allows you to easily
browse through the input, output, load and battery parameters of the UPS, learn current UPS status and alarm
information, perform functional setting and control operation. The LCD also stores up to 1024 historical
records that can retrieve for reference and diagnosis.
4.2
LCD Screen Types
4.2.1
Start Screen
Upon UPS start, the UPS executes self-test, and the start screen appears and remains approximately 15
seconds, as shown in Figure 4-2.
F1
F2
F3
F4
F5
A
R
F1
F2
F3
F4
F5
Figure 4-2
Start screen
4.2.2
Primary Screen
After the UPS starts and finishes self-test, the primary screen appears, as shown in Figure 4-3. The primary
screen is divided into four windows: system information window, menu window, data window and keypad
window.