AKD5602A Datasheet, PDF (14/24 Pages) Asahi Kasei Microsystems – Evaluation board for AK5602A

5 – 7. Energy graph screen
[AKD5602A]
Based on the acquired data by the measurement, the numerical value and the graph of active energy and reactive energy are
plotted. Furthermore, the numerical value of power factor, the phase angle between each current input and voltage input
and the temperature of the LSI are also displayed.
Here, power factor1 is PF1, power factor2 is PF2, and power factor3 is PF3.
<Calculation method of each parameter>
(1) Active energy
Active energy = the counting number of pulses for one second of RPO or TPO / 1000 * the rated current * the rated voltage
/ 1000 [Unit: KW]
The value of the rated voltage and current used in this equation is set at “Start up screen”.
(2) Reactive energy
Reactive energy = the counting number of pulses for one second of RQO or TQO / 1000 * the rated current * the rated
voltage / 1000 [Unit: KW]
(3) Phase angle between each voltage input and each current input
Phase angle n = COS^-1 PFn (Arc-cosine PFn)
Here, if the polarity of reactive power (Most Significant Bit of Q1 value or Q2 value or Q3 value equals “1”) is negative,
the phase angle n is represented in the negative value.
(4) The screen will jump to the “Measuring screen” when “Return” button is pressed.
<KM105100>
- 14 -
2010/10