VEGA WEIGHTRAC 31 Foundation Fieldbus - Manual (Page 26)

26
5 Connecting to power supply
WEIGHTRAC 31 • Foundation Fieldbus
42375-EN-131120
5.2 Connection - Mass flow detection
Non-Ex instruments and instruments with non-intrinsically safe
current output
8
9
10
4
5
7
6
2
1
3
1 1
24
/L
/N
PE
56
22
11 12
21
22
19
20
18
17
14
13
16
15
12
91
01
1
Fig. 12: Electronics and terminal compartment with non-Ex instruments and
instruments with non-intrinsically safe current output
1 Voltage supply
2 Relay output
3 Signal output FF bus
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 Simulation switch (1 = simulation on)
10 Setting the bus address for sensor-sensor communication (MGC) 1)
5 6 7 8
2
1
Fig. 13: Adjustment and connection compartment with non-Ex instruments and
instruments with non-intrinsically safe current output
1 Terminals for the external display and adjustment unit
2 Contact pins for the display and adjustment module or interface adapter
Instruments with intrinsically safe current output
You can find detailed information on the explosion-protected versions
(Ex-ia, Ex-d) in the Ex-specific safety instructions. These safety
Electronics and terminal
compartment - Non-Ex
instruments and instru-
ments with non-intrinsi-
cally safe current output
Adjustment and con-
nection compartment
- Non-Ex instruments and
instruments with non-
intrinsically safe current
output
1) MGC = Multi Gauge Communication