5 Electrical installation
WirelessHART Adapter SWA70
38
Hauser
5.4
Wiring diagrams for solar module connection
For the WirelessHART Adapter with a solar module connection, the following options are available
to electrically connect a field device:
Note!
• To ensure smooth, unhindered operation, the solar module and field device must either be
powered by different sources or powered by the same source with two galvanically isolated
outputs.
5.4.1
Field device in a closed-control loop without a communication
resistor
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. 5-14: WirelessHART Adapter with solar module connection –
connection of a field device in a closed-control loop without a communication resistor
Connection options
Installation in a closed-control loop
• Without a communication resistor, see Page 38.
• With a communication resistor, see Page 39.
Installation, independent
• Two-wire field device, see Page 40.
• Four-wire field device, see Page 40.
1
WirelessHART Adapter terminals 1 to 6
2
Field devices
3
PLC, remote I/O or DC voltage power unit without a
communication resistor
1
2
3
4
5
6
+
+
–
–
1
2
3
Содержание SWA70
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