ABB PCS100 UPS-I User Manual page 111

PCS100 UPS-I User Manual
308 S Info
325 S F
326 S F
327 S W
and
(2) disconnected the load from
the utility.
Emergency power Emergency power off switch
off activated
FSB On Timeout The Fail-Safe Bypass (FSB) has
not opened within the required
time-out period or the FSB is
closed when it should be open.
This is detected by the auxiliary
contacts inside the FSB. The
2200A and 4200A FSBs employ an
ACB (air circuit breaker) fitted in
a separate FSB enclosure. The
900A FSB employs normally
closed contactors fitted in the
utility disconnect module
FSB Off Timeout The Fail-Safe Bypass (FSB) has
not closed within the required
time-out period or the FSB is
open when it should be closed.
Note: This is detected by the
auxiliary contacts on the FSB. The
2200 A and 4200 A FSBs employ
an ACB fitted in a separate FSB
enclosure. The 900 A FSB employs
normally closed contactors fitted
in the Utility Disconnect module.
FSB Forced Close The FSB is currently being forced
closed by the Test menu
Info only
For a 2200 or 4200 A FSB
check:
(1) If anyone manually
closed the ACB. (the FSB
open/closed status can be
viewed via the window on
the front of the ACB)
(2) Check the ACB open
coil.
(3) Replace the FSB
Interface board.
(4) Check the ACB aux
contact circuit.
(5) Check if the FSB
Interface Board has
autonomously closed the
FSB. See event 221 for
more information.
For a 900 A FSB, Replace
the Utility Disconnect
module.
For a 2200 or 4200 A FSB
check:
(1) If anyone manually
opened the ACB. (the FSB
open/closed status can be
viewed via the window on
the front of the ACB)
(2) Check the ACB close
coil
(3) Replace the FSB
Interface board
(4) Check the ACB aux
contact circuit.
For a 900 A FSB replace the
Utility Disconnect module
Clear parameter 625 at the
end of your testing
111