Configuration
switches
The
DIP
switches
are
located
on
the
front
panel
of
the
UPS
subassembly
(see
A
in
Figure
9).
These
switches
allow
you
to
select
whether
the
ON
or
OFF
state
of
the
connected
system
unit
controls
the
operation
of
the
UPS
during
an
AC
power
outage.
Standalone
mode:
When
both
switches
are
set
to
the
OFF
or
the
up
position
(factory
default),
the
UPS
always
enters
battery
mode
during
an
AC
outage.
The
unit
remains
in
battery
mode
until
AC
is
restored
or
until
the
battery
is
discharged.
On-battery
and
low-battery
signals
are
available
to
the
associated
system
when
an
RS-232
cable
connection
is
in
place,
but
there
is
no
control
of
the
UPS
from
the
system
unit.
This
mode
of
operation
is
typical
for
the
standby
type
of
power
supplies
commonly
found
in
the
marketplace.
Host-dependent
mode:
The
host-dependent
mode
is
when
both
DIP
switches
are
set
in
the
ON
or
down
position.
During
an
AC
outage,
the
UPS
does
not
remain
in
battery
mode
for
more
than
five
seconds
unless
there
is
an
active
RS-232
connection
present
from
a
powered-on
system
unit.
If
the
system
unit
is
powered
on,
the
UPS
remains
in
standby
mode.
If
the
system
unit
is
powered
off,
the
unit
does
not
stay
in
standby
mode.
When
AC
power
is
restored,
AC
power
is
again
available
at
the
UPS
output.
This
setting
is
useful
for
situations
where
systems
units
are
powered
down
at
the
close
of
business
and
the
main
store
power
is
also
shut
down.
This
setting
prevents
the
UPS
from
switching
into
standby
mode
and
discharging
the
battery
when
the
store
power
is
removed.
A
Figure
9.
Location
of
UPS
configuration
switches
Updated
October
31,
2007
Chapter
1.
Introducing
the
SurePOS
700
Models
11
Содержание 4800-741
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Страница 143: ...IBM IBM GA27 4004 GA27 4004 Updated October 31 2007 Appendix A Safety information 123...
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Страница 164: ...Updated October 31 2007 GA27 4328 04...
