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ADE9000 Setup questions

Category: Software
Product Number: ADE9000 and ADE9078
Software Version: NA

We are trying to setup a custom board with the ADE9078. We also used the ADE9000 shield for our initial development. From this we have some questions, as well as running into some issues:

  • Can the ADE9000 be used on 120V (normal wall power)? Is it just a matter if running through the calculations in the datasheet, but adjusting for our resistor array and changing 240V to 120? ADE9078 (Rev. 0) (analog.com) Quick start section, page 56
  • If so, what would have to be done to make it work/read correctly for the 120V wall power
  • After reviewing the example Arduino code for the calibration, is there any additional documentation or write up on how and when to properly use that?
  • Is 2 wire single phase supported?
  • For the ADE9000 shield, we seem to be able to calibrate it and write to the registers. However, with our ADE9078, we seem to not be able to write to any of the registers at all. We tried the provided calibration sketch, we tried writing to the registers directly, and checked to see if the lock register was set, but nothing worked. Even the RUN register comes up as 0 after booting. Please keep in mind that we were using the exact same code for both the ADE9000 and the ADE9078, but getting different results.
  • in the test sketch for Arduino, there is a resetADE9000 function that resets the ADE. Is this needed every time on boot? Is there a case where this HAS to be run at some point? If we don't run the reset routine ever, will that cause issues?

Those are the major questions that I have right now. Thank you.

Parents
    • The ADE9000 can be used with 120V. Even if with no changes to the described resistors network you would still be able to take this measurement. To follow the Quick Start you would need to replace 240V with 120V as your nominal voltage and then follow the calculations. It is suggested that your nominal voltage input after the resistor network be 1/2 of the 1V full scale.

     

     

    • The ade9000 can be used for 2 wire single phase, however there will be certain features and measurement that would not be available. What measurements are you interested in?

     

    • Are you using the evaluation board for each of the parts or the ADE9000 Arduino shield for both of the parts? The Arduino calibration sketch is designed for the ADE9000 which has some frequencies to the ADE9078 so it would not necessarily function without any changes.
    • Did you replace the ADE9000 part in the Arduino shield board with the ADE9078? There could also be some soldering issue that explains why communication is not working.
    • Also the RUN register is 0 at reset so it would have to be set to 1

     

    • It is not required every time on boot, but it is important to have access to it in order to get the part out of any unwanted state without requiring a hardware reset or when communications are failing.

    -David M

  • Thank you for your reply and direction, we were able to get it working. For the last 2 issues, we found out that on the custom board, someone replaced the opto isolator with a lower quality one that had a communication speed limit of 1MHz, but we were trying to communicate at 5, that was our issue. Thanks again.

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