Two-Wire Field Device With Power Supply For The Device; Four-Wire Field Device - Siemens SITRANS AW 7MP3112 Series Operating Instructions Manual

Connecting
6.2 Wiring diagrams
● Connection of a two-wire field device with external power supply without communication
resistor
● WirelessHART connection parallel to wired HART communication
Select which of these options you require for your installation.
6.2.2

Two-wire field device with power supply for the device

When you connect a two-wire field device, the following functions are possible via terminals 1
and 2:
● Power supply of the field device
● Current measurement in the range from 4 to 20 mA
● Digital HART communication
Connect up the WirelessHART adapter as illustrated:
Figure 6-2
6.2.3

Four-wire field device

When you connect a four-wire field device, the following functions are possible via terminals 2
and 3:
● Current measurement in the range from 4 to 20 mA
● Digital HART communication
Connect up the WirelessHART adapter as illustrated:
34
Connection of a two-wire field device and supplying the device with power
WirelessHART Adapter SITRANS AW200
Operating Instructions, 02/2020, A5E02777161-AA