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Hitachi HFC-VWS3EH Series Instruction Manual page 35

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7.5
Standard
connection
diagram
and operation
For
a typical
standard
connection
diagram
and
operation
method
of
75HF3E
or
smaller,
recommended
in
Figs.
10
to
15
(a)
below
in
accordance
with
the
operation
patterns.
For
100HF3E
or
greater,
shown
in Fig.
15
(b).
Note)
Operate
and
stop
the
inverter,
using
a command
from
the
control
terminal.
The
soft
memory
element
is used
to
store
data
input
from
the
digital
operation
panel
when
the
inverter
power
is
cut
off.
There
is a limit
to the frequency
of memory
in this memory
element;
this
frequency
corresponds
to
the
life
span.
If
power
is
turned
ON and
OFF
several
times/day
to
store
the
changed
data
in memory,
its
life
will
be approx.
10 years.
The
inverter
should
be operated
and
stopped,
using
a
control
terminal
command,
not
by turning
power
ON and
OFF.
It
should
be noted,
therefore,
that
if
the
inverter
is
operated
and stopped
by turning
power
ON and OFF, whenever
the
setting
data
are
changed,
its
life
will
be
expired
at
earlier
stages.
a. 3G =

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