WirelessHART Adapter SWA70
5 Electrical installation
Hauser
39
5.4.2
Field device in a closed-control loop with a communication
resistor
The WirelessHART Adapter can be connected to an existing installation comprising a HART field
device and a power supply system that includes a communication resistor.
The following functions are possible with this connection version:
• Digital HART communication
Connect the WirelessHART Adapter as illustrated below:
Fig. 5-15: WirelessHART Adapter with solar module connection –
connection of a field device in a closed-control loop with a communication resistor
1
WirelessHART Adapter terminals 1 to 6
2
Field device
3
PLC, remote I/O or DC voltage power unit with a
communication resistor
1
2
3
4
5
6
–
–
+
+
1
2
3