Vega VEGASCAN 693 Operating Instructions Manual page 15

Wiring plan for four-wire sen-
sors
VEGASCAN 693 - 15-channel HART signal conditioning instrument
8
9
Fig. 4: Connection example, VEGASCAN 693 with four-wire sensors
1 Measured data input with sensor supply (active input)
2 Measured data input (passive input), not in Ex ia
3 Internal fail safe relay
4 Distributor
5 Power supply of VEGASCAN 693
6 HART four-wire sensor with Multidrop address 1
7 HART four-wire sensor with Multidrop address 2
8 HART four-wire sensor with Multidrop address 3
9 Power supply for four-wire sensors
+ -
1
1
4
9 10
17 18 19 20 21 22
+ -
7 6
L1 N
5
Electrical connection
3
+ -
2 3 4 5 6 7 8
2
11 12 13 14 15 16
23 24 25 26 27 28
15