First of all I hear about the operation.
Terminating the voltage input of the ADE7753, if you use only the current input. What Can current measurement?
I assume you want to use just the V1 channel and want to understand if the state of V2 channel pins will affect the V1 channel measurements. The answer is NO. If you ground the V2P/V2N pins of ADE7753 (or leave them unconnected), it will not affect the measurements of the V1P/V1N channel.
Did I understand your question correctly? If not, please clarify.
Thank you your answer. It is gist of the answer that I wanted to hear.
But it is about the reason for such a question. Current measurement result is there is a time to become unstable by the value of the IRMSOS.
So, there was a necessary to know what this thing is affecting because I do not use V2P/N. Current is 0A in DC.
At that time, issues 200msec abnormal value (0x6829) approximately every 3 seconds. The other time is the value in the vicinity of 0A. In addition, the register value of IRMSOS of that time is -441. When this register is in such as +400 or -10600, current output does not cause an abnormal operation.
I want to know why whether such abnormal behavior occurs.
Than from the data sheet did not know.
I will continue this discussion about the ADE7753.
It sounds like the DC current measurement is unstable based on the IRMSOS value that you set. The fact that you are not using V2P-V2N should not cause any issues.
A few questions to help clarify, what current levels are you measuring?
What IRMS value are you measuring?
Specifically, I am interested in the IRMS values at 0A when you get these glitches, if you could attach a plot or table of the value that would be of most use. Please specify the IRMSOS register value too.
Thank you for your reply.
Upload the measurement result.
The result, the value of IRMSOS has frequency dependence. However only around 0A.
Will cause of such intermittent behavior there is a cause to ΣΔADC?
Please short the inputs for the channel you are measuring directly at the pins and redo the testing you show. Do you still get the same spikes in the RMS reading?
Do you have a schematic of the design which you could attach? it would be greatly helpful to try to understand any influences on this measurement.
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