Technical information

IM-P343-29 CH Issue 5 23
6.2.4 Wiring for instrinsic safe applications
Fig. 28 Example of electrical connections for Intrinsically Safe applications
Output parameter for Barrier (b) and (c) Uo
30 V, Io 100 mA, Po 650 mW
Output parameter for Barrier (a) Uo
15 V, Io 25 mA, Po 65 mW
Digital outputs
Switch 1 and 2
Safe
area
Barrier (a)
Travel switches
1
2
3
4
Hazardous
area
4 - 20 mA
Supply
Barrier (b)
Signal
5
6
4 - 20 mA
4 - 20 mA
retransmit
Barrier (c)
Position
transmitter
7
8