AKD5602A Datasheet, PDF (3/24 Pages) Asahi Kasei Microsystems – Evaluation board for AK5602A

[AKD5602A]
4. Function summary
Software processes running on PC are divided into three software processes, which are initial mode setting process,
measuring process, calculating and drawing process.
4 - 1.Initial mode setting process
(1) Set the communication port address of USB for the evaluation board and the rated values of current and voltages
to be measured.
(2) Set the initial value of registers of AK5602A and display the registers.
When setting values into registers, set a writing address and data in a hexadecimal format and press the “Writing”
button. When reading values from registers, set a reading address in a hexadecimal format and press the
“Reading” button. The modes of RESET, STBY and DISABLE at AK5602A can be controlled by pressing
corresponding buttons. These buttons are toggle mode buttons.
(3) Set the addresses of displaying data
4 - 2. Measuring process
There are an instantaneous process and time interval process in measuring processes.
The instantaneous process measures the input signal of current and voltage with 62 samples per one cycle at 50Hz
or 52 samples per one cycle at 60Hz. Time interval process measures the active and reactive power for every one
second. The instantaneous process measures the instantaneous current, instantaneous voltage, RMS current, RMS
voltage, input voltage frequency, instantaneous active power, instantaneous reactive power and instantaneous
apparent power every one second for 10 seconds (Maximum is 30 seconds) (Graph1). And the values of registers
being appointed are read out and displayed in the measured data screen.
Time interval process measures total active power and total reactive power by counting the number of RPO (TPO)
or RQO (TQO). It also measures the input voltage frequency, F1, F2 and F3 every one second for 10 seconds
(Maximum is 30 seconds). Furthermore, the value of power factor of each input, the phase between input voltage
and input current being derived from the power factor and temperature are measured every one second and
displayed (Graph2).
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2010/10