Battery Packs
FN -2TXI models utilize flame retardant batteries packaged in (5) user-replaceable, hot-swappable packs that
are accessible by removing the UPS lower front panel. There are (4) 12V, 7AH valve-regulated, sealed lead
acid (VRLA) batteries in each pack (Yuasa NP7-12). See replacement instructions on page 38.
To maintain the optimum battery life, the UPS should be installed in an environment with an ambient
temperature of 68ºF to 77ºF (20ºC to 25ºC). Due to the battery manufacturer specification, the FN Series UPS
batteries may be operated at 32ºF to 104ºF (0ºC - 40ºC), but battery life will be substantially reduced if contin-
uously operated at the higher temperature levels. Optional extended battery banks and charger
modules are available through Falcon to extend the amount of battery runtime.
Internal Battery Charger
The internal UPS battery charger utilizes energy from the utility power to continuously charge the UPS
batteries. The charger operates in "constant power" mode. The UPS batteries are being charged whenever
the UPS is plugged in, turned on and operating from utility power. The internal UPS battery charger output is
rated at 1.9 amps.
Static Bypass Function
NOTE: Bypass power will only be available If the bypass input is connected at the time of UPS
installation.
A manual static bypass pushbutton is located on the FN front control panel. When the UPS is operating from
utility in the normal utility mode on-line state, depressing this button will cause the UPS to transfer to bypass.
Depressing the bypass button again will return the UPS to normal inverter operation.
Automatic Bypass Transfers
NOTE: Bypass power will only be available if the bypass input is connected at the time of UPS installation.
The FN Series UPS will automatically switch to bypass mode under the following conditions: To energize the
connected load when the UPS is first turned on; encounters an overload; encounters an over temperature
condition; or upon a UPS failure condition. Should any of these events occur, the UPS will transfer to bypass
mode, sound an audible alarm and provide a "BPS" indication on the LCD display.
Output Filter
As with the input filter stage, the output filter maintains conducted (EMC) and RFI levels below FCC Class A
limits.
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