The invention relates to a
power factor compensation controller, wherein a circuit comprises a power circuit, a
voltage current sampling circuit, a CPU treatment circuit, an
LED display circuit, a compensation control output circuit, a switching value
input output circuit and an RS485 communication circuit, wherein an quantitative value, a switching value
signal and a temperature
signal in a screen are sent to the CPU treatment circuit to be treated, the quantitative value is output after a
voltage signal and a current signal are sampled by the
voltage current sampling circuit through A / D
digital analog conversion, the switching value signal is input by the switching value
input output circuit, output voltage, current, frequency, active power, reactive power, active
harmonic percentage, power factors and temperature signals are transported to other
peripheral equipment through the RS485 communication circuit, the CPU treatment circuit further outputs a fan
control signal in an external
capacitor box through the switching value
input output circuit, and switches external compensation
capacitor through the compensation control output circuit. The
power factor compensation controller has the functions that the speed rate is high, data can be collected and treated intelligently in
large capacity and real time, and the
remote communication can be achieved and the like.