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ADE7880 --Power factor measurement incorrect

Question asked by kishanm on Jul 17, 2017
Latest reply on Jul 26, 2017 by Godson1

We started testing ADE7880 on evaluation board and we were able to communicate the board with PC.


We are giving 3 phase voltages and currents as per the UG-356.pdf document to the EVB.


As per the UG-356.pdf evaluation board user guide document we are trying to read the RMS current and voltage registers.


The following points are observed:


  • RMS currents panel was used to check the current registers and they are updating as per the current changes on the sensing line.
  • RMS voltages panel was used to check the voltage registers and they are not updating as per the voltage changes applied to the board.
  • All Registers Access panel was used to check the power factor registers. Power factor registers also not updating properly. It’s giving random data between 0x0000 to 0xFFFF.
  • And there is no continuous update of register data. Every time I have to close the panel and reopen the panel to read the register data.


Please suggest the solution to resolve the above issues. We are ready to show you the live demo in our place for better understanding of issues. If possible please visit once.