The present invention relates to a device that automatically operates the food waste disposal when the separation network.;The present invention for this purpose, the central processing unit 10 for controlling the sink attached food waste processor 100 as a whole; A sensor unit 30 which detects this when the step network is separated from the inlet and sends a signal to the central processing unit; A first DC motor control unit 20 driving the input motor connected to the first transfer screw to inject food waste to one side and receiving an overcurrent control signal; An AC motor controller 22 which drives the dehydration motor connected to the second transfer screw to compress and cut food waste and receives an overcurrent control signal; And a second DC motor control unit 24 which drives the drying motor connected to the rotating shaft to dry food waste and receives an overcurrent control signal.;The present invention configured as described above, when food is accumulated in the walking network and separated to put it into a drain, the food waste processor inside the sink connected to the drain is automatically operated to provide convenience of use and thereby It is intended to greatly improve quality and reliability.
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