30V4060 Welding Machine Control System

The adjustment of the 30V4060 latitudinal bar spacing is realised with a stepper motor. Here, the pulses driving the stepper motor are supplied by a three-phase, six-beat ring distributor composed of internal relays M200,M201 and M202 (realised with shift instructions); forward and reverse control of the stepper motor is realised with the stepper motor forward and reverse control knob X500 (SB9) in conjunction with the output points Y030, Y031 and Y032. The speed of the stepper motor movement is controlled by the frequency of the pulses, while the number of steps of the stepper motor movement is controlled by an internal counter.

The input devices that generate the input control signals of 30V4060 are: operation mode changeover switch; manual movement selection switch; stepper motor movement speed and number of steps selection switch; position detection element; cooling pump motor start and stop button, main and vice oil pump motor start and stop button, screen feeding motor start and stop button, welding start and stop button, stepper motor start/stop knob, forward/reverse knob, shift and pause and single step control buttons. pause and single-step control buttons, etc.

30V4060 output devices are: solenoid valve to control the beam up/down, solenoid valve to control the table in/out, solenoid valve to control the upward movement of the mesh lifting cylinder, solenoid valve to control the downward movement of the mesh flipping cylinder, respectively, to control the coolant pump motor, the main oil pump motor, the secondary oil pump motor, the mesh feeding motor contactor, the relay to trigger the thyristors and so on.