WirelessHART Adapter SWA70
5 Electrical installation
Hauser
43
5.5.3
Four-wire field device
The following functions are possible with this connection version:
• Current measurement in the 4 to 20 mA range
• Digital HART communication if this is supported by the field device.
Connect the WirelessHART Adapter as illustrated below:
Fig. 5-20: WirelessHART Adapter with an intrinsically safe power unit –
connection of a four-wire field device
1
WirelessHART Adapter terminals 1 to 6
2
Four-wire field device with galvanic isolation
1
2
3
4
5
6
+
–
2
1
