VEGA MINITRAC 31 4 … 20 mA_HART - four-wire With SIL qualification User Manual
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5 Connecting to power supply
MINITRAC 31 • 4 … 20 mA/HART - four-wire
43389-EN-131119
1
1
24
/L
/N
PE
56
22
11
12
21
22
19
20
18
17
14
13
16
15
12
2
1
44
3
Fig. 13: Electronics and connection compartment (Ex-d) with instruments with
intrinsically safe current output
1 Voltage supply
2 Relay output
3 Interface for sensor-sensor communication (MGC)
4 Setting the bus address for sensor-sensor communication (MGC)
4)
5 6 7 8
2
3
4
1
2
+
( )
(-)
1
Fig. 14: Adjustment and connection compartment (Ex-ia) with instruments with
intrinsically safe current output
1 Terminals for intrinsically safe signal output 4 … 20 mA/HART active (not on
versions with Ex-d approval)
2 Contact pins for the display and adjustment module or interface adapter
3 Terminals for the external display and adjustment unit
4 Ground terminal
Electronics and connec-
tion compartment - In-
struments with intrinsi-
cally safe current output
Adjustment and connec-
tion compartment - In-
struments with intrinsi-
cally safe current output
4)
MGC = Multi Gauge Communication