37 — CyberPower CyberShield CS 24 UPS unit data sheet
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 37-3
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
37.3 General description
The UPS converts ac input power (85 to 264 V ac) to dc power (24 W, 12 V dc). The
battery provides up to 14 h of backup power for the lifeline POTS service, depending
on environmental conditions and load.
An audible alarm is available on the UPS to monitor the operational status of the
backup battery. LED status indicators also provide the service personnel with
information on the status of the ac input, dc output, and battery.
37.4 Status LEDs
Three indicator LEDs are present on the front of the UPS. Each LED is labeled with
an icon. The LEDs and the icons, with their meanings, are shown in Table 37-2. The
operating mode can be determined by the state of these LEDs.
Table 37-2 CyberShield CS 24 UPS LEDs for ONTs
37.5 Alarms
The UPS is equipped with intelligent internal diagnostics that provide power supply
alarm information. Open collector opto-isolators isolate the alarm signals which are
present on the power and alarm connector. The service provider can monitor these
alarm signals to isolate problems and take corrective action.
Table 37-3 describes the UPS alarm signals and output levels.
Table 37-3 Alarm signal and output levels
Name Indicator Color Description
AC Green Operating on ac power
Yellow Operating on battery
OUTPUT Green DC output is present
BATTERY Red Battery is missing or needs replacement
Signal Description
ON BATTERY The on-battery alarm indicates that the BBU is operating
using the backup battery.
REPLACE BATTERY The replace-battery alarm indicates that the battery is
either discharged, or has failed the self test.
Replace the battery if there is a failure.
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