Emerson Liebert APS - User Interface Module; System Control Module and System Monitor Module; Figure 7 User Interface Module; Figure 8 Liebert APS System Control Module and the System Monitor Module

Product Introduction
Liebert
®
APS
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1.5.2 User Interface Module
The user interface module is shown in Figure 7.
Figure 7 User interface module
The user interface module is the primary source of communication between the UPS and the user.
The user interface module permits:
• Viewing the UPS status
• Configuring the system
• Reviewing the event log
• Silencing the audible alarm
Refer to 4.0 - Operation and Display Panel for details on operating the user interface module.
1.5.3 System Control Module and System Monitor Module
The system control module and the system monitor module are the communication backbone of the
UPS. They gather input from all modules and process the data to control the operation of the system,
including monitoring the condition of each module. Except for the silkscreen, the appearance of the
system control module and the system monitor module is as shown in Figure 8.
Figure 8 Liebert APS system control module and the system monitor module
Under normal operation, the green status LED will blink and the yellow fault LED will be Off. For
any other condition, refer to 5.0 - Troubleshooting.
Handle
Green Status LED
Yellow Fault LED
Securing Hole
Locking Lever