.......
..'
.
.
.
...
I
12
Cah.le:
:
...
.
.
-.
...
. .
..
....
.
.
. . . ._
.'
.
. . .
.
.
.
.
.
.
....
..........
.
.
......
;-..:
.:.
. .
.
-
9'
....
. .
. .
....
..
.~b
avoid
false,
sign$aco
arid
'trom
a cbiitrn~~~~c~ch,,.fcju
ihadld.
fikt'.soti;ap
.
.'
...
.
.
..
_.
-
...
.
.
_,/
.
,
'
:
.
:
._
......
,.'
'
7;.
the &blcs into gm~ps:d~pcndingonfibiv ~dn$@vc,-theyak,
tci'iritctferon~.
.:
.;
_..
...
....
...
.....
....
......................
.......
....
...
.
.
.
.
....
.
........
,'.
.
.
......
:,j.
-
..,
..
......
.
.
\
..
................
'..
.
.
.
.
.....
'
.
.'..:
;::.(s'ee,beloy/);:.'
-:.
'..
::,
,.:
. .
'.
.;.
1
..........
.....
.....
-..
:
..
\..
.
>.
...
.
.
.............
.
.,
.
.
.
....
.
.
.
.
.
.
.
...
...
...
.
.
...
...
.
.
.
I
.
.
. :.
..
. .
...
:
.me principal
'he
$
Lo
havti&MEs
4~
d$c$rcnt
$pal
~ypc~:P.&pe.tly
.
.
...
..
........
.
.
.
.
.
.
..
:
,.
...
.
.
.
,
.
.
...
.
I
........
......
.......
s$arated from].i%ch other.
Do
nCH
mix
di'ffercnt.signa1 types
iri
thesame..
5'
. .
.
.
'.
I
...
...
.
.
...
cable and make'suc.that cables of diffcreit
gro0ps~run
over:%
short
...........
....
.
:
.
.
.
...
,
..
.
.
a.dista&e;as possible; Neverplace
the
signal'cables, on
the
same c.abIe.racks.:,
-
_
...
.. .. .
...
.
.
....
...
. -.
.
....
.
.
. .
,
.
.
.
. .
%
....
as'high voltage cables..
...."....
. . . .
...
...
.
.
.
,
When
through yal1s;it
may
be
dificulr tosepxatedi'fferent g6ups
so
you should at.least.sepaiatc thehbles on.both.iides
of
the
wall
.
.
. .
immediately before and.aftcr passage through thel waK Similarsignals
.
,
:..
however should
be
kcpt
.together.
A
transducer's
to
and
from,
conductors',
,'
..
,
.
"
.
should.always
be-
in,the same cables. All.cablks' should also lie
as
neiir to the
....
. .
.......
...
;
.mountii~g
plate(ground) a,$ possible.
:.
I
:
....
..
.
..
.
.....
. .
.
,.
. .
......
........
...
...
...
...
.
.:
:
i.
.
...
....
.
.
. .
.....
-
~fahy
signs
is
&in
ieiuitiiive thg the others,
it
has
to.&
iepaked 'f*m.the'.
...
others even ifthey
*,of
the
same
signal
types.
he
most
sensitive
.
.
.
.
'
.
-
conductor'is always placed nea,mt'ground.
.
'.,
'
,
.
'
..
.....
All
signal
cables
should
be
screened. The screen
must
be
connected
to
the
ground
rail
which is
as
near SanCon 05-25145BattCon
OP45
as
possible.
The screen must
not
be
connected to
the
external equipment (transducers.
connection
boxes,
etc.) Unused conductors must
be
connected to the screen
at
both
ends or cut away. They must not lie loose outside the screen.
Do
not use aluminum-sheathed
220
V
installation cable for signals
in
groups
I
or
II.
This
type
of cable
has
a
slit along
the
whole length
of
the
cable
which
makes it sensitive to
interfe~nce.
Groups
I
and
I1
cables which pass through heavy magnetic fields can
be
screened by routing the cable through a steel conduit which is grounded.
Suitable Group Division for
Different
Cables
Group I
Fast
signals with voltage levels
0
-
f
10
V.
eg.
terminal cables for printers and screens.
Very
sensitive to interference. Should be property screened.
Group II Medium-speed signals
with
voltages levels
0-50
V.
This applies to signals from angle transducers, electronic pulse
transducers without relay
outputs
Sensitii
to heavy interference.
Group Ill
Sbw
signals
with
voltage
levels
0-220
V.
Such
as
mains connections, signals from relays. connectors and
lamps.
Not
normally
sensitive to interference
but
can emit heaving interferenca
pulses.
To Next Page
Loading...
