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ADE7753 WGAIN calibration issue

Question asked by Mitschl on Jun 15, 2015
Latest reply on Aug 16, 2015 by donovanpl123

Hi all,

 

i have some issues calbriating the watt gain oft the ade7753 with an accurate source. For current measuring I'm using a current transformer with a turns ratio of 1:13 and a burden resistor with 0.3 ohms. Following the calibration routine described in the datasheet, I was trying to read the LAENERGY register with 230V and 1A applied. The reading is always closed to the default value 16777215 which I get from the register without any power source connected. I read the register for several loads, but the value only changes slightly in the last four digits.

I don't think its a problem with my hardware as reading the LVAENERGY register almost matches the calculated value of lvaenergy_expected. The value also changes properly with different loads.

 

Has anyone yet experienced a similar problem?

 

I would be very grateful for any sort of help.

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