Every model has a corresponding frequency conversion compressor, which controls the air delivery by changing the rotational speed of motor, making
the electricity consumption smoothly vary with air delivery, if air delivery decreases, electricity consumption decreases to achieve energy saving.
Except the same high quality as other type ERC compressor, the variable frequency compressor has high quality frequency converter to improve
energy saving efficiency. With the help of PID regulator inside the frequency converter, VSD compressor can start smoothly with less impact to power
grid and less running current. When the air consumption is too small, the compressor will enter sleeping status to save considerable energy. Moreover,
digital to analog conversion is highly accurate and the integration design features few fault points.