
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 | 09:20:37 |
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Single |
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Main | Bypass | Output |
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L |
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71.4 | 70.8 | 71.3 |
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Frequency (HZ) | 59.9 | 59.9 | 59.9 | EPO |
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480 | 480 | 480 |
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PowerFactor | 0.99 | 0.99 | 0.99 | INVERTER OFF | FAULT CLEAR |
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Input disconnect closed | SILENCE ON/OFF | ||||
Output disconnect closed |
Buzzer
STATUS
Bypass abnormal |
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| ? | INVERTER ON |
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F1 | F2 | F3 | F4 | HELP |
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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
Figure 57 Sections of the LCD
| Liebert NX | 09:20:37 | UPS system | ||||
| Single |
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| Normal | information | ||
LCD menu |
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| Main | Bypass |
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| 71.4 | 70.8 | 71.3 |
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Data and settings | Frequency(HZ) | 59.9 |
| 59.9 | 59.9 |
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| 480 |
| 480 | 480 |
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| PowerFactor | 0.99 |
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| Input disconnect closed |
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Current status | Output disconnect closed |
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messages | Bypass abnormal |
| Navigation | ||||
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| F1 | F2 | F3 |
| F4 | HELP | key icons |
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| 83 |
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