VEGA MINITRAC 31 Profibus PA - Manual (Page 27)

27
5 Connecting to power supply
MINITRAC 31 • Profibus PA
43836-EN-131119
instructions are part of the scope of delivery and come with the Ex-
approved instruments.
6
8
9
4
5
7
1
2
3
1 1
24
/L
/N
PE
56
22
11 12
21
22
19
20
18
17
14
13
16
15
12
Fig. 16: Electronics and connection compartment (Ex-d) with instruments with
intrinsically safe current output
1 Voltage supply
2 Relay output
3 Adjustment bus address for Profibus PA
4 Signal input 4 … 20 mA (active sensor)
5 Switching input for NPN transistor
6 Switching input floating
7 Transistor output
8 Interface for sensor-sensor communication (MGC)
9 Setting the bus address for sensor-sensor communication (MGC) 4)
5 6 7 8
2
3
4
1 2 + ( ) (-)
1
Fig. 17: Adjustment and connection compartment (Ex-ia) with instruments with
intrinsically safe current output
1 Terminals for Profibus PA
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