Chapter 4 Display Panel 33
Liebert
®
ITA 5kVA And 6kVA UPS User Manual
4.1.3 Control Keys
The two control keys include ON/SILENCE key and OFF key. Their functions are given in Table 4-3.
Table 4-12 Functions of the control keys
Control key
Function
ON/SILENCE key
1. Starting the inverter: Pressing and holding this key for one second starts the inverter.
2. Silencing alarm: In Battery mode, or upon overload or fault, the UPS has an audible alarm, pressing and
holding this key for one second silences the alarm.
3. Initiating battery manual test: When the UPS is in Normal mode, pressing and holding this key for four
seconds initiates battery manual test
OFF key
1. Turning off the inverter: When the UPS is in Normal mode or Battery mode, pressing and holding this key
for one second turns off the inverter, and the UPS output transfers to Bypass mode.
2. UPS accessing to standby state: When the UPS is in Bypass mode, pressing and holding this key for ten
seconds turns off UPS bypass output, then the UPS accesses to the standby state
Note
Pressing and holding the ON/SILENCE key for one second silences the alarm, and do the same operation can resume the alarm
beep.
4.2 LCD Display Panel
The LCD display panel provides LED indicators, a LCD display screen and control keys, as shown in Figure 4-2.
FAULT indicator
BYPASS indicator
MAINS indicator
BATTERY indicator
INVERTER indicator
LCD display screen
ENTER key
ON/SILENCE key
OFF key
CYCLE key
Figure 4-42 LCD display panel
The functions of the control keys are listed in Table 4-4.
Table 4-13 Functions of the control keys
Control keys
Functions
ON/SILENCE
key
1. Starting the inverter: When the inverter is off, pressing and holding this key for one second starts the inverter.
2. Silencing alarm: When the UPS has an audible alarm, pressing and holding this key for one second silences
the alarm.
3. Initiating battery manual test: When the UPS is in Normal mode, pressing and holding this key for four
seconds initiates battery manual test
OFF key
1. Turning off the inverter: When the UPS is in Normal mode or Battery mode, pressing and holding this key for
one second turns off the inverter, and the UPS output transfers to Bypass mode.
2. UPS accessing to standby state: When the UPS is in Bypass mode, pressing and holding this key for ten
seconds turns off UPS bypass output, then the UPS accesses to standby state
