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Alarm Messages
The alarm message area displays vital information about the operation of the UPS system. During
normal operation no alarm messages should be present. Alarm conditions can be monitored. The
alarm messages are displayed in reverse video (highlighted— light on dark). To clear a latching
alarm, you must also press the Alarm Reset pad after the alarm condition is corrected.
The following list shows the alarm messages that may be displayed in this area. For more information
and the corrective actions for these messages, refer to Table 9 in this section.
Item 5 - Alarm Messages
Input Fail
DC Ground Fault
DC Capacitor Fuse Blown
Battery CB Open
Battery Discharging
Low Battery Warning
Low Battery Shutdown
DC Overvoltage Shutdown
Input Current Unbalanced
Control Power Fail
Inverter Non-Synchronized
Overload
Overload Shutdown
Figures 16 through 20 illustrate how the Monitor/Mimic Display screens on the SCC and on a mod-
ule depict the power flow through the UPS system.
A three-module system designed for redundant operation is shown. A multi-module UPS system may
include up to six (6) modules for each System Control Cabinet (SCC).
Reverse Power
Rectifier Fuse Blown
Inverter Fault
Hardware Shutdown
Emergency Off
Ambient Overtemperature
Fan/Blower Failed
Equipment Overtemperature
Overtemperature Timeout
Battery Cycle Buffer Warning
Battery Overtemperature
Battery Exercise
31
Operation
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