User Manual NS1500/2200/3000-1T
8
Rev. 11/2005
4.4 LED Indicators
FAULT
– UPS is abnormal.
CHARGER
– Charger is working.
PFC OL
– Input current too large due to low input utility power.
GREEN
– UPS is in green mode.
LINE
– Utility power is normal. Input relay is in closed state.
BOOST
– Booster is working. (During start up and DC mode)
INVERTER
– Inverter is working.
BYPASS
– Load is supplied with utility power when the input relay is in closed state.
LOAD 25/50/75/100%
– Output load at 25, 50, 75, 100%.
BATTERY 25/50/75/100%
– indicates the status of the batteries.
100%
– Battery is fully charged.
75%
– Battery is in normal voltage state.
50%
– Battery is going to enter low voltage state.
25%
– Battery is going to enter cut-off state.
The battery voltage level for each LED indication is as follows:
NS1500
NS2200
NS3000
100%
>52.8V >79.2V >105.6V
75%
49.6V~52.8V 74.4V~79.2V 99.2V~105.6V
50%
44.0~49.6V 66.0~74.4V 88.0~99.2V
25%
42.0~44.0V 63.0~66.0V 84.0~88.0V
4.5 Control Panel Buttons
ON/OFF
–
1. When utility power is available, the UPS can be turned on or shut off by
pressing the ON/OFF button.
2. When the UPS is operating normally in the inverter mode, pressing the
ON/OFF button will be change the UPS to BYPASS mode. The UPS will
stop supplying power to the connected equipment if the utility power is
unstable.
FUNCTION (TEST)
–
While the UPS is working under normal status, pressing the Function Button will
test the batteries for 10 seconds. The batteries, instead of the utility power,
will supply power to all circuits. If the UPS switches back to Normal Mode after
