34 — APC 24 W 12 V dc UPS unit data sheet
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 34-3
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
The ANSI UPS offers a 12 V dc uninterruptible power supply with 100 to 240 V ac
input, 12 V dc output.
34.4 Operating modes and LEDs
The operating indicators changed for the ANSI UPS models delivered with FGH
1.0.5 and later. This section describes the operating modes and indicators for the
current UPS models and the UPS models delivered before FGH 1.0.5.
Current UPS model (ANSI)
For the current UPS model, there are four operating modes:
• Normal: Under normal operating conditions, both green lights are on and the red
light is off. The load receives its power from the utility and battery charge is
maintained.
• On-Battery: During a commercial utility outage, the UPS supplies the load from
battery power. The green DC Output LED light is on and the AC Present LED
light is yellow.
• Low-Battery: When the UPS operates on battery power for extended periods, the
battery charge is depleted and the UPS shuts down. In this case, all lights are off.
The UPS remains off until utility power is restored.
• Overload: When the UPS shuts down due to an overload, the green DC Output
LED light is off and the AC Present LED light is green. After 6 s, the UPS
automatically restarts.
The UPS has three LEDs on the front panel. The operating mode can be determined
by the state of these LEDs; see Table 34-2. Each light is labeled with an icon.
Figure 34-1 shows the icons and the associated descriptions.
Table 34-2 UPS LEDs for current UPS model
Notes
(1)
Occurs when operating on battery for an extended period.
(2)
If the UPS shuts down due to overload, it automatically restarts after 6 s.
(3)
Replace battery. If the outdoor ONT power cable with beeper assembly is installed, an audible alarm sounds.
Note — The battery recharges to at least 90% of full capacity in 24 h.
LED name Status
Operating on ac
power
Operating on
battery power
Low battery
shutdown
(1)
Overload
condition
(2)
Bad battery
(3)
AC Present Green Yellow Off Green Green or yellow
DC Output Green Green Off Off Green
Battery Bad Off Off Off Off Red
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