| 摘要 |
A fan control system includes an alternative current (A/C) source, a programmable logical controller (PLC), a switch module, and a fan module. The PLC includes a detecting module. The switch module is connected to the A/C source. The fan module is connected to the switch module. The fan module includes a plurality of fans. The PLC is adapted to control the switch module thereby changing a power level output to the fan module, according to an ambient temperature of the fan module and an air pressure difference between a cold channel and a hot channel of the fan module in turn. If the pressure difference is smaller than a predefined value, the plurality of switches are switched by the PLC to provide a higher power to the fan module. |
