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9.0 FNB-1S7, FNB-2S7 & FNB-3S7 EXTENDED BATTERY BANK OPTION OVERVIEW
FN Series Extended Battery Bank Option contains: one, two or three 240Vdc parallel strings of 12V, 7AH,
Valve Regulated Lead Acid (VRLA) batteries depending on the model. The FNB-1S7 model adds one
additional battery string, the FNB-2S7 adds two, and the FNB-3S7 adds three. All strings are in a
single battery bank enclosure. Multiple enclosures may also be configured. When connected to the FN -2TXI
model UPS, the Extended Battery Bank will provide an extended battery backup time.
9.1 How to connect the FNB-xS7 or FNB-xS9 extended battery bank to the FN -2TXI Model
UPS.
1. Locate the extended battery installation kit. The kit contains, (1) interface cable, (1) ground cable, (2)
interface cable connector locking plates and (4) screws.
2. Remove the screws securing the external battery connectors located on the UPS and Extended
Battery Bank rear panels. (See the picture to the right).
3. Verify the Extended Battery Bank output circuit breaker is in the "Off" position.
4. Connect one end of the extended battery interface cable to the battery connector on
the UPS rear panel. Secure the connector by sliding the locking plate into the slots on
the connector and installing the supplied screw.
5. Connect the other end of the extended battery interface cable to the battery connector on the extended
battery bank rear panel. Secure the connector by sliding the locking plate into the slots on the connector
and installing the supplied screw.
6. Connect one end of the ground cable to the UPS ground point located on the rear panel and secure with
the supplied screw. Connect the other end of the ground cable to the grounding point on the battery bank
rear panel and secure with the supplied screw.
7. Turn on the battery bank output circuit breaker and start up the UPS.
8. Perform a UPS self-test to verify operation.
FNB-xS7 or
FNB-2S9
Extended Battery
40
Optional fast
recharge battery
chargers are
available.
Up to (3) additional
chargers may be
added.
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