2
S
lide seal cone and cone sleeve to the
requested position on the cable
3
F
asten the seal screw
R
emoval is carried out in reverse order
.
4
C
onnecting to power supply
4
.
1
P
reparing the connection
N
ote safety instructions
A
lways keep in mind the following safety instruc
-
tions
:
l
C
onnect only in the complete absence of line
voltage
l
VEGAWELL S
51
contains an integrated
overvoltage protection
.
I
f overvoltage is ex
-
pected
,
overvoltage protection instruments
should be installed to protect connected
instruments
S
elect power supply
P
ower supply and current signal are carried on the
same two
-
wire cable
.
T
he voltage supply range
can di
ff
er depending on the instrument version
.
T
he data for power supply are speci
fi
ed in chapter
"
T
echnical data
"
.
P
rovide a reliable separation between the supply
circuit and the mains circuits according to
DIN VDE
0106
part
101
.
VEGA
power supply units
VEGATRENN
149
AE
x
and
VEGAMET
381
meet this requirement
.
W
hen
using one of these instruments
,
protection class
III
is ensured for
VEGAWELL S
51
.
S
elect connection cable
C
onnection is made with standard two
-
wire cable
without screen
.
A
n outer cable diameter of
5
…
9
mm ensures the seal e
ff
ect of the cable entry
in the
VEGABOX
02
.
I
f electromagnetic interfer
-
ence is expected which is above the test values of
EN
61326
for industrial areas
,
we recommend the
use of screened cable
.
1
2
F
ig
.
13
:
C
onnect
VEGAWELL S
51
to power supply
1
D
irect connection
2
C
onnection via
VEGABOX
02
C
able screening and grounding
I
f screened cable is necessary
,
connect the cable
screen on both ends to ground potential
.
I
n the
plastic housing
,
in
VEGABOX
02
or in
VEGADIS
12
,
the screen must be connected directly to the
internal ground terminal
.
T
he ground terminal
outside on the housing must be connected to the
potential equalisation
.
I
f potential equalisation currents are expected
,
the
connection on the processing side must be made
via a ceramic capacitor
(
e
.
g
.
1
n
F
,
1500
V
).
T
he
low frequency potential equalisation currents are
thus suppressed
,
but the protective e
ff
ect against
high frequency interference signals remains
.
4
.
2
C
onnection procedure
D
irect connection
P
roceed as follows
:
1
W
ire the connection cable up to the connection
compartment
2
2
C
onnect the wire ends to the screw terminals
according to the wiring plan
18
VEGAWELL S
51
C
onnecting to power supply
32946
-
01
-
101123
