Vega VEGASCAN 693 Operating Instructions Manual page 15

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