Application apparatus of programmable logic controller on tube bender

[0012] The following is a further elaboration on the specific implementation:

[0013] When the programmable logic controller 1 and other equipment are installed in a fixed position, the programmable logic controller 1 is used as the control core, the foot switch 2 and the limit switch 3 are used as input points, and the intermediate relay 4 controls the hydraulic pressure The motor 5 controls the entire circuit. The application device of the programmable logic controller on the pipe bender, the intermediate relay 4 is powered by the power source 7.

[0014] The foot switch 2 is connected to the input terminal and the common terminal of the programmable logic controller 1 through a conductive wire 6. The limit switch 3 is connected with the input terminal and the common terminal of the programmable logic controller 1 through the conductive wire 6; when the foot switch is pressed, the device starts. When bending to a set angle, the limit switch 3 sends a signal, and the programmable l