ADE9000: Detect power line frequency

Hi,

My customer want to know that how to set the output frequency to 0 Hz regardless of the state of the SELFREQ bit,

when the power line frequency is less than 40Hz or no power line detectet,

Thanks and regards,

Makio

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  • Hi Michelangelo,

    The ADE9000 automatically outputs 50Hz or 60Hz when it goes out of the frequency measurement range of 40 to 70Hz.

    Other than using the zero intersection timeout function described in the data sheet to determine the input state after confirming in advance whether the ZXTOx bit of STATUS1 (0x403) is set from the microcomputer using the event of the IRQ1 pin There seems to be no best way.

    (* It seems that there is no choice but to add a device to detect around ADE9000)

    Thanks and regards,

    Makio

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