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Update – Providing 24VDC to Field Devices
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Terry Blevins
19 May 2014
DCS
termination
Education
Power
"field power"
"3 wire"
"discrete input"
field
"distributed control system"
Distributed Control Systems (DCS)
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Update – Providing 24VDC to Field Devices
In a blog posted late last month I addressed how to provide a 24VDC source of power to a three wire field device. In the past I have used a 24VDC High Side Discrete output to provide 24VDC to these types of devices. This solution can be implemented in most DCS and PLC systems. If … Continue reading »
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Aidan Fusco
over 5 years ago
Hello Terry, does this also apply to the IS Marshalling hardware ? I am planning to install an Endress and Hauser flow switch that is sending a DI signal to an IS DI Namur charm. The device also requires field power between 18-30 VDC and I am not clear on where I can supply this power from. I am connecting my digital signal to terminals 3 and 4 on my IS Charm terminal block, terminals 1 and 2 are available for use. Any info would be much appreciated. Thanks, Aidan.
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