27
5 Connecting to power supply
MINITRAC 31 • Foundation Fieldbus
41782-EN-211203
5.3 Connection - Level detection
Non-Ex instruments and instruments with non-intrinsically safe
signal 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. 15: Electronics and connection compartment with non-Ex instruments and
instruments with non-intrinsically safe signal 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)
3)
5 6 7 8
2
1
Fig. 16: Adjustment and connection compartment with non-Ex instruments and
instruments with non-intrinsically safe signal output
1 Terminals for the external display and adjustment unit
2 Contact pins for the display and adjustment module or interface adapter
If inductive loads or stronger currents are switched through, the gold
plating on the relay contact surface will be permanently damaged.
Electronics and con-
nection compartment
- Non-Ex instruments and
instruments with non-
intrinsically safe signal
output
Adjustment and con-
nection compartment
- Non-Ex instruments and
instruments with non-
intrinsically safe signal
output
Connection to a PLC
3)
MGC = Multi Gauge Communication
