Installation manual
Planning
the
Layout
(Continued)
1-4
•
Priority
of
channel-attached
devices
•
Space
limitations,
such
as
floor-loading
capacity,
location
of
columns,
and
provisions
for
growth
•
The
length
of
the
cables
connecting
the
units
in
the
system
•
Visual
access
required
between
a
control
unit
and
at
least
one
of
its
associated
I/O
devices
•
Work
space
and
aisles.
You
may
need
to
prepare
and
analyze
several
layouts
before
choosing
the
final
layout.
If
you
plan
to
install
the
equipment
in
two
or
more
stages,
prepare
a
separate
layout
for
each
stage.
Consider
channel
priority
assignments
and
cable
lengths
for
each
stage.
To
make
a
layout,
you
need
an
accurate
drawing
of
the
proposed
area.
For
a
precise
layout,
use
the
paper
templates
in
Appendix
D
or
order
clear
plastic
templates
(English
GA24-4046,
metric
GA24-4047).
The
templates
show
the
required
space
for
weight
distribution
and
clearances
for
the
operator,
service
personnel,
and
test
equipment.
Templates
also
show
the
radii
of
swinging
gates
and
covers,
and
the
location
of
casters
and
frame
entry/exit
cutouts
for
cables.
Note:
You
may
overlap
clearances
shown
on
the
templates
if
you
maintain
the
larger
clearance.
The
gate
swing
of
an
auxiliary
unit
must
not
interfere
with
the
gate
swing
of
its
corresponding
control
unit.
Place
the
equipment
so
that
the
lengths
of
the
connecting
cables
do
not
exceed
the
maximum
limits;
these
limits
may
vary.
Refer
to
the
device
specification
pages
and
cable
schematics
for
the
appropriate
limits.
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