1
P
roduct description
F
unctional principle
S
eparators separate intrinsically safe circuits from non
-
intrinsi
-
cally safe circuits
.
I
n general
,
a di
ff
erence is made between gal
-
vanic separation by
:
l
E
x separators
(
with external energy
)
l
S
eparators
(
without external energy
)
L
imitation of the electrical variables by
:
l
S
afety barriers
E
x separator
VEGATRENN
149
AE
x
T
he
E
x separator
VEGATRENN
149
AE
x is used as intrinsically
safe power supply for
E
x approved
4
…
20
m
A
/
HART
sensors
.
T
hrough the auxiliary energy the sensor can be provided with
more power
.
T
he instrument ensures a galvanic separation be
-
tween sensor circuit and processing circuit and hence between
E
x and non
-
E
x areas
.
T
he load
-
independent
4
…
20
m
A
current
is transmitted linearly to the output
.
T
he sockets in the front en
-
able
HART
communication with the sensor via
VEGACONNECT
3
.
T
he necessary communication resistance
(
R
=
250
Ω)
is al
-
ready integrated in
VEGATRENN
149
AE
x
.
P
roduct properties
:
l
U
niversal for all passive
4
…
20
m
A
/
HART
sensors
l
HART
transmission to the output side
l
S
ockets in the front for connection of
VEGACONNECT
l
SIL
2
quali
fi
ed
F
ig
.
1
:
E
x separator
VEGATRENN
149
AE
x
S
eparator type
KFD
0
T
he separator
KFD
0
-
CS
-
E
x
1
.
51
P
is used for intrinsically safe
power supply and signal transmission of
E
x approved
4
…
20
m
A
sensors
.
I
t is loop
-
powered without external energy
.
T
he instru
-
ment ensures a galvanic separation between sensor circuit and
processing circuit and hence between
E
x and non
-
E
x areas
.
T
he
load
-
independent
4
…
20
m
A
current is transmitted linearly to the
output
.
H
owever
,
a
HART
signal is not transmitted
.
P
roduct properties
:
l
U
niversal for all passive
4
…
20
m
A
sensors
l
A
lso in conjunction with signal conditioning instruments with
-
out own
E
x approval
l
L
oop
-
powered
,
i
.
e
.
no additional power supply required
l
M
ounting of the separator in
E
x zone
2
permitted
F
ig
.
2
:
S
eparator type
KFD
0
-
CS
-
E
x
1
.
51
P
S
afety barrier type
9001
T
he safety barrier type
9001
is used for intrinsically safe measur
-
ing current transmission in
E
x
Z
one
1
without galvanic separation
.
I
t is hence suitable for connection of an indicating instrument to
the non
-
intrinsically safe
4
…
20
m
A
output of a signal condition
-
ing instrument
.
S
afety barriers are also called zener barriers
.
P
roduct properties
:
l
U
niversal use for all
4
…
20
m
A
indicating instruments
l
L
oop
-
powered
,
i
.
e
.
no additional power supply required
F
ig
.
3
:
S
afety barrier type
9001
1
.
1
A
pplication examples
E
x separator
VEGATRENN
149
AE
x
20 ... 253 V
AC/DC
4 ... 20 mA
SPS
1
2
3
4
F
ig
.
4
:
I
ntrinsically safe supply of an ultrasonic sensor via
VEGATRENN
149
AE
x
,
indication of the measured value or transmission to a
PLC
/
control system input card
(
4
…
20
m
A
)
1
S
ensor
2
VEGATRENN
149
AE
x
3
I
ndication
4
PLC
/
C
ontrol system
/
P
rocessing system
P
roduct description
S
eparating and protective instruments
–
S
eparating and protective instruments
3
31996
-
EN
-
071204
