Vega POINTRAC 31 Operating Instructions Manual page 21

Adjustment and con-
nection compartment
- Non-Ex instruments and
instruments with non-
intrinsically safe current
output
Electronics and terminal
compartment - Instru-
ments with intrinsically
safe current output
POINTRAC 31 • Foundation Fieldbus
Fig. 10: 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
instructions are part of the scope of delivery and come with the Ex-
approved instruments.
/L
1
/N
PE
2
Fig. 11: Electronics and terminal compartment (Ex-d) with instruments with
intrinsically safe current output
1 Voltage supply
2 Relay output
3 Signal input 4 ... 20 mA (active sensor)
4 Switching input for NPN transistor
5 Switching input floating
6 Transistor output
7 Interface for sensor-sensor communication (MGC)
8 Simulation switch (1 = simulation on)
9 Setting the bus address for sensor-sensor communication (MGC)
MGC = Multi Gauge Communication
2)
5 Connecting to power supply
2
1
6 7 8
5
9
8
7
6
4
3
5
2)
21