17 18 19 20 21 22
9
10
11 12
1
2
3
4
23 24 25 26 27 28
13 14
15 16
5
6
7
8
L1 N
+ -
+ -
+ -
5
6
7
8
9
1
2
4
3
F
ig
.
4
:
C
onnection example
,
VEGASCAN
693
with four
-
wire sensors
1
M
easured data input with sensor supply
(
active input
)
2
M
easured data input
(
passive input
),
not in
E
x ia
3
I
nternal fail safe relay
4
D
istributor
5
P
ower supply of
VEGASCAN
693
6
HART
four
-
wire sensor with
M
ultidrop address
1
7
HART
four
-
wire sensor with
M
ultidrop address
2
8
HART
four
-
wire sensor with
M
ultidrop address
3
9
P
ower supply for four
-
wire sensors
W
iring plan for four
-
wire sen
-
sors
VEGASCAN
693
-
15
-
channel
HART
signal conditioning instrument
15
E
lectrical connection
29252
-
EN
-
060513
