3 wiring plan, Wiring plan for two-wire sensor, 5 connecting to power supply – VEGA VEGAMET 391 4 … 20 mA_HART User Manual
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15
5 Connecting to power supply
VEGAMET 391 • 4 … 20 mA/HART
36032-EN-130701
5.3 Wiring plan
8
7
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3
9
5
4
2
1
6
12
17
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29
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+
-
L+
N-
+
+ + + + -
-
5 4
3
6
9
1
7
8
2
10 11
12 13
14
OK
ESC
on
1 2 3 4 5 6
Fig. 5: Wiring plan with two-wire sensor
1 Relay 1
2 Relay 2
3 Relay 3
4 Relay 4
5 Relay 5
6 Relay 6
7 Current output
8 Operating voltage of the signal conditioning instrument
9 Measurement data input with sensor supply (active input)
10 Connection for HART modem for sensor parameter adjustment
11 Measurement data input (passive input), not with Ex-ia version
12 Digital input 1 … 4
13 Common ground for digital input 1 … 4
14 4 … 20 mA/HART sensor (two-wire version)
Wiring plan for two-wire
sensor
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