HART devices and power supply

Data Acquisition Field Network Q&A

Hi. I have another question about HART communicators and devices. The question is: should we feed 24 VDC to a HART device only through a PLC/DCS or can we do it with an external power supply?

Expert’s Answer: HART Devices and Power Supply

Hi there! I can explain, this is a pretty straightforward case of HART devices and power supply. In most cases, you can supply power to a HART device through the programmable logic controller (PLC) or a distributed control system (DCS). However, some controllers and systems can use a separate power supply to create the current loop. So, it fully depends on your structure.

For more information about HART, please visit www.hartcomm.org.

For more information on the topic, please check with these websites:

Hope it helped!

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