Liebert NX UPS System user manual Direct Access Push Buttons Keys, LCD Monitor and Menu keys

Operator Control Panel and Display

7.1.3Direct Access Push Buttons (Keys)

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.

Press and hold Direct Access key briefly until acknowledged by a single beep.

7.1.4LCD 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.

Table 19 Menu key Icons and their meaning

Key		F1	F2	F3	F4	Help
Window Type 1			LEFT	RIGHT		?
					ENTER	HELP
	Next Data Window

ESC

Window Type 2

Escape

UP DOWN

Figure 32 Graphic LCD monitor windows and keypad

					1 - UPS System
Liebert	NX	2005-10-22		17:32:20
20kVA 3X3		Unit #1		Normal	Window
	Main	Bypass	Output		2 - UPS Menu
		A(AB)	B(BC)	C(CA)	Window
Vphase V		220	220	220	3 - UPS Data
Iphase A		20.5	20.5	20.5
Freq. Hz		50.1	50.1	50.1	Window
Vline V		380	380	380
P.F.		0.99	0.99	0.99
Input breaker closed			01-12	12:28:16	4 - Current Record
Manual turn on			01-12	12:30:06
					Window
UPS in normal mode			01-22	12:30:16
				?	5 - Keypad Window
F1	F2	F3	F4	HELP

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