This is an excellent video. We have been working on an issue that turned out to be a floating voltage on a 24v power supply that didn't have its negative line connected to common earth. This video helped me a lot.
To answer your question, in theory, you could have ground loops affecting your HMI devices without a 4-20 mA loop in the system. It could happen if you are sharing non-isolated power supplies and serial communication lines, etc. We focus here on 4-20 mA signal related ground loops because that is the most common area where we see them happen.
@@predig I was making a joke about the momentary audio blip, but the entire video was helpful. it covered everything I overlooked when in school. All I knew was to shield one end of the twisted pair and never put much thought into why. thanks
This is an excellent video. We have been working on an issue that turned out to be a floating voltage on a 24v power supply that didn't have its negative line connected to common earth. This video helped me a lot.
Thanks for the feedback, Paul! We're glad to hear you found our video useful.
Another fantastic video - thank you for making this information public, it is greatly appreciated!
Glad to hear you found this video useful, Jacque. We appreciate the feedback.
this is equal to years and years of experience, thank you
We're glad you found this useful. Thanks for the feedback!
Yes, good seminar by Precision Digital. Could you do a seminar on instrumentation types and valve types in general .
Responding a year late, but we're glad to hear you found this webinar useful. We will consider your suggestion for a future webinar.
Very good siminar. I'm hoping that add more videos. Thanks and God bless precision digital teams.
We're glad you found this webinar useful!
thank you for sharing.. truly good learning.. about current 4 to 20ma current loop.
Thank you for quality training.
nice video guys
Thank you! We hope you found it useful.
Can these ground loops effect HMI devices and PLCs in none 4 - 20 mA current loop applications?
Hi John. I apologize for the delay in our response. That's a good question! Let me get back to you on that.
To answer your question, in theory, you could have ground loops affecting your HMI devices without a 4-20 mA loop in the system. It could happen if you are sharing non-isolated power supplies and serial communication lines, etc. We focus here on 4-20 mA signal related ground loops because that is the most common area where we see them happen.
Great video
effects of ground loop @36:40 lol. good video.
We had to cover the basics first, but hopefully you found this useful.
@@predig I was making a joke about the momentary audio blip, but the entire video was helpful. it covered everything I overlooked when in school. All I knew was to shield one end of the twisted pair and never put much thought into why. thanks
@@TheBigDirtyz Glad to hear this was helpful. Thanks for your feedback.
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9:43
I admit, I am scared of ground loops.
We hope you found this video useful so that you can defeat that fear with knowledge!
Skip to 3.28
Actually skip to 9.21 ...
Why 4-20 should be repeated thousands of times?