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Operator Control and Display Panel
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9.0 OPERATOR CONTROL AND DISPLAY PANEL
9.1 Operator Control Panel
The control panel and LCD on the front of the Liebert
®
APM
™
lets the operator:
• Turn the UPS On or Off.
• Transfer into the various operating modes.
• Silence alarms.
• Check the status of the UPS and its batteries, including all measured parameters, events and
alarms.
The main areas of the control panel are shown below in Figure 51 and explained in Table 23.
• Mimic Display - view the status of the Liebert APM in single-line diagram format—indicators
show status by changing color when ON, flashing or OFF
• Liquid Crystal Display (LCD) and Navigation keys - view status and operational data from
the Liebert APM in tabular format
• Control buttons - turn the Liebert APM on or off, silence alarms
Figure 51 Overview of control panel
Table 23 Descriptions of UPS operator control and display panel
Mimic Current Path Control Buttons
Item # Function Button Function
1 Rectifier indicator (AC to DC) EPO EPO switch
2 Battery indicator (backup DC power) INVERTER ON Inverter start button
3 Bypass input indicator INVERTER OFF Inverter shutdown button
4 Inverter indicator (DC to AC) FAULT CLEAR Fault reset button
5 Load indicator (AC output) SILENCE ON/OFF Alarm mute button
6 UPS status and alarm indicator
Menu Buttons
7 Audible alarm (buzzer) Button Function
8 Protective cover for EPO button F1 through F4 and HELP LCD menu keys
NOTE
Help button menus are not active. Future units will ship with an F5 legend in place of the
HELP legend.
STATUS
EMERSON
Network Power
TM
F1 F2 F3 F4
HELP
FAULT CLEAR
EPO
IN V E RTE R OFF
SILENCE ON/OFF
IN V E RTE R ON
Control
buttons
LCD and Menu Buttons
Mimic
current
path
1
2
3
54
6
7
8