Specifications

Liebert Nfinity UPS Guide Specification
4kVA –20kVA (208/120 or 240/120) 4/03 Rev 2
SL-23956
6
The UPS fault indicator is used with additional indicators and audible alarms to notify the
user that a UPS fault condition has occurred. The color of the fault indicator LED is amber.
Replace Battery Module
Replace Power Module
Replace Control Module
On Bypass
Low Battery
OverTemp Warning
UPS Shutdown
If there is a fault condition, the UPS will attempt to maintain conditioned power to the load,
or at minimum transfer to bypass. There will also be a visual indication on each module
should the module fail and need to be replaced.
In addition to an audible/visual fault signal the UPS also records fault occurrences in a rolling
event log. The event log on the standard unit can record up to 255 occurrences, with the
oldest events discarded first, etc. The user has access to the event log through the LCD
display. Every alarm and/or event recorded in the event log will contain a time and date
stamp.
B. Audible Alarms
The volume of all audible alarms is at least 65dBA at a distance of three feet (one meter). An
audible alarm is used in conjunction with the LED/LCD indication to indicate a change in
UPS status.
The audible alarms enunciate for utility line loss, low battery (while on battery), and all other
alarm conditions. For all alarm conditions, the user must look at the display to determine the
cause of error/alarm. All alarm tones are a continual tone until the condition rectifies itself or
the alarm is silenced. Once silenced, the audible alarm will not sound until a new alarm
condition is present.
C. Alarm Silence Button
In addition to the load On/Off switch, the user interface includes an audible „Alarm Silence‟
switch. If the alarm silence switch is pressed for one second, all current audible alarms will
be disabled. If a new alarm occurs, or a cancelled alarm condition disappears and then re-
appears, the audible alarm is re-enabled.
D. LCD Display
The LCD display is used to provide information to the user. The display is used to program
ALL information (voltage, frequency, etc.) into the UPS. Any display values that require
time/date will be „year 2000‟ compliant.
2.2.4 Automatic Battery Test
The UPS will initiate an automatic battery testing sequence periodically, at a programmed day and
time of day, selectable by the end user. The user will be able to select the interval of the battery test
and will be able to select 1, 2, 3, 4, or 6 week intervals, or can select to disable the automatic battery
test.
Should a battery failure occur, the battery module will disconnect itself from the critical DC bus and
the UPS will immediately return to normal mode and fault signals (visual, audible, and remote via
serial) will be communicated. No audible or remote (via serial/contact closures) indication of the
battery test is communicated during the duration of the automatic battery test.
The automatic battery test factory default settings are enabled at a two week interval and to occur on
Wednesdays at 0600hours (based on the twenty-four hour clock).