4 Wiring
4.1 Wiring overview
Wiring diagrams for specific sensors can be found in the wiring sections of manuals of
those particular sensors.
4.2 Power supply/current loop
4.2.1 Power supply overview
The tables below display the minimum and maximum voltages needed to operate the
5081.
Minimum supply voltage at the transmitter terminals 12.0 Vdc
Minimum power supply for load resister 250 Ohms
Maximum power supply voltage 42.0 Vdc
Maximum power supply voltage for intrinsically safe instal-
lations
30.0 Vdc
GraphTable 4-1:
Upper line Power supply voltage needed to provide 12 Vdc at the
transmitter terminals for a 22 mA current
Lower line Power supply voltage needed to provide 30 Vdc for a 22
mA current
Maximum current About 24 mA
Minimum load for digital communications 250 Ohms
Minimum power supply voltage to supply the 12.0 Vdc lift
off voltage at the transmitter
17.5 Vdc
Wiring
Instruction Manual 15
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