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Operator Control Panel and Display
56
7.1.3 Direct Access Push Buttons (Keys)
Press and hold Direct Access key briefly until acknowledged by a single beep.
7.1.4 LCD Monitor and Menu keys
The user-friendly and menu-driven 320 x 240 dot graphic LCD monitor displays real time data and at
the same time stores 512 historical records that can retrieve for reference and diagnosis.
The user can perform commands or easily browse through the input, output, load and battery param-
eters. For quick reference, the UPS status and any warnings are always highlighted without the need
of navigating through the menu. The versions of converter firmware, inverter firmware and internal
monitor firmware can also be displayed on the LCD.
Menu keys F1 to F4 are used to navigate within the graphic LCD monitor windows.
Figure 32 Graphic LCD monitor windows and keypad
Emergency Power Off (EPO)
Disconnects Power to the Load. Disables rectifier, inverter, static bypass
and battery operation.
Inverter ON Enables Inverter Operation
Inverter OFF Disables Inverter Operation
Fault clear Resets blocked UPS functions (subject to any fault being cleared)
Silence ON/OFF Toggle type buzzer mute. Any new fault re-enables the buzzer.
Table 19 Menu key Icons and their meaning
Key F1 F2 F3 F4 Help
Window Type 1
Next Data Window
LEFT RIGHT
ENTER
HELP
Window Type 2
Escape
UP DOWN
?
ESC
Liebert NX
20kVA 3X3
?
Output
2005-10-22
Unit #1
17:32:20
Normal
F2 F3 F4 HELPF1
Bypass
Main
A(AB) B(BC) C(CA)
Vphase V 220 220 220
Iphase A 20.5 20.5 20.5
Freq. Hz 50.1 50.1 50.1
Vline V 380 380 380
P.F. 0.99 0.99 0.99
Input breaker closed 01-12 12:28:16
Manual turn on 01-12 12:30:06
UPS in normal mode 01-22 12:30:16
4 - Current Record
Window
3 - UPS Data
Window
2 - UPS Menu
Window
1 - UPS System
Window
5 - Keypad Window