Operator Control and Display Panel

10.4Audible Buzzer

The buzzer produces three types of sounds:

Single beep - when any control button is pressed

Single beep repeating every two seconds - the system has a general alarm

Continuous - the system has a serious fault

If the buzzer makes no sound, the system may be operating properly, or an alarm may have been silenced manually.

Figure 56 Buzzer location

LED1

LED2 LED4 LED5

LED3

Liebert NX

2007-01-06

09:20:37

 

 

80kVA-3X3

Single

 

Normal

 

 

Main

Bypass

Output

 

 

L-N current (A)

L 1-N/L2

L2-N/L3

L3-N/L1

 

 

71.4

70.8

71.3

 

 

Frequency (HZ)

59.9

59.9

59.9

EPO

 

L-L voltage (V)

480

480

480

 

 

 

PowerFactor

0.99

0.99

0.99

INVERTER OFF

FAULT CLEAR

 

 

 

 

Input disconnect closed

01-06 09:15

SILENCE ON/OFF

Output disconnect closed

01-06 09:15

Buzzer

STATUS

Bypass abnormal

 

01-06 09:15

 

 

 

 

 

?

INVERTER ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F1

F2

F3

F4

HELP

 

10.5LCD Overview

The LCD on the front panel has five main sections, as shown in Figure 57. Press the F1 key below the LCD to scroll through these sections.

UPS System Information - view UPS name and model, date and time, overall status (see Table 30).

LCD Menu - choose a category of data items to appear below the menus (see Table 31).

Data and Settings - view data items for the selected menu (see Table 31).

Current Status Messages - check any active UPS event and alarm messages (see Appendix A).

Navigation Key Icons - look at the icon above each navigation key to determine how the key operates when pressed (see 10.6 - Navigation Keys).

The LCD displays alarm information in real time. After appearing in the current status section of the LCD, status messages are stored in the history log—512 records can be stored and retrieved.

Figure 57 Sections of the LCD

 

Liebert NX

2007-01-06

09:20:37

UPS system

 

80kVA-3X3

Single

 

 

Normal

information

LCD menu

 

 

 

 

 

 

 

Main

Bypass

 

Output

 

 

 

 

L1-N/L2 L2-N/L3

L3-N/L1

 

 

L-N current(A)

71.4

70.8

71.3

 

Data and settings

Frequency(HZ)

59.9

 

59.9

59.9

 

 

L-L voltage(V)

480

 

480

480

 

 

PowerFactor

0.99

 

0.99

0.99

 

 

Input disconnect closed

 

01-06 09:15

 

Current status

Output disconnect closed

01-06 09:15

 

messages

Bypass abnormal

 

01-06 09:15

Navigation

 

 

 

 

 

 

?

 

F1

F2

F3

 

F4

HELP

key icons

 

 

 

 

 

 

83

 

 

 

 

Page 93
Image 93
Emerson 40-200KVA user manual Audible Buzzer, LCD Overview