Vega FIBERTRAC 31 - Page 16

16
4 Connecting to power supply
FIBERTRAC 31 • Four-wire 4 … 20 mA/HART
62067-EN-211203
instructionsarepartofthescopeofdeliveryandcomewiththeEx-
approved instruments.
1
1
24
/L
/N
PE
56
22
11
12
2122 1920 18 17 14 1316 15 12
2
5
1
3
4
6
7
8
Fig. 10: Electronics and connection compartment (Ex-d) with instruments with
intrinsically safe current output
1 Voltage supply
2 Relay output
3 Signal input 4 … 20 mA
4 Switching input for NPN transistor
5 Switchinginputoating
6 Transistor output
7 Interface for sensor-sensor communication (MGC)
8 Setting the bus address for sensor-sensor communication (MGC)
2)
567
8
2
3
4
1
2
+
( )
(-)
1
Fig. 11: 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)
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
2)
MGC = Multi Gauge Communication