Chapter 4 Operation And Display Panel 39
Liebert
®
ITA 16kVA And 20kVA UPS User Manual
Chapter 4 Operation And Display Panel
This chapter introduces the functions and use of the components on the UPS operation and display panel, and
provides LCD display information, including the LCD screen types, detailed menu messages, prompt windows
message and UPS alarm list.
4.1 Introduction
The operation and display panel is located on the front panel of the UPS. Through the operation and display panel,
you can conduct the operation and control on the UPS and query all the UPS parameters, UPS and battery states,
and alarm message.
As shown in Figure 4-1, the operation and display panel provides LCD, menu buttons (F1 ~ F4, HELP), LED
indicators (inverter indicator and fault indicator), control buttons (FAULT CLEAR, ON, OFF, ALARM CLEAR, EPO).
Figure 4-1 Operation and display panel
4.1.1 LED Indicators
The LED indicators are composed of the inverter indicator and the fault indicator. Table 4-1 gives the indicators
description.
Table 4-1 Description of LED indicators
Indicator Color State Meaning
On Load power is supplied by the inverter
Blinking Inverter on, starting up, synchronizing, or standing by (ECO mode)
Inverter indicator Green
Off Inverter not operating
Blinking General fault (such as no battery)
On Serious fault (such as inverter fault)
Fault indicator Red
Off No fault
4.1.2 Audible Alarm (Buzzer)
The UPS operation is accompanied with the following two different kinds of audible alarms shown in Table 4-2.
Table 4-2 Audible alarm description
Sound Meaning
One beep every other second Sound is generated when the UPS alarm appears, such as AC input failure
Continuous beep Sound is generated when the UPS fault appears, such as fuse or hardware failure
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