Haiwell C60S2R series PLC realizes high-speed and low-speed synchronization in the conveyor belt...

With the gradual development of industrial automation, automation has been widely used in various manufacturing industries and enterprises. In today's many foaming machine control systems, in order to simplify the mechanical structure and reduce the maintenance cost of the equipment, it is required to synchronously control the speed of multiple motors of the equipment. With the powerful and easy-to-use logic functions of Haiwell's domestic PLC, it is convenient to realize the synchronous control of multiple motors. Here is an introduction to this application.

The project requirement is to realize the high-speed and low-speed synchronous control of the five independent conveyor belts through PLC and inverter. With the automatic stop function in place, it can realize the purpose of motor forward and reverse control.

The project mainly includes the expansion of 1 to 5 conveyor belts, drive motors, frequency converters, PLC and other components. Now adopts frequency conversion speed regulation to drive the conveyor belt. The whole system is coordinated by PLC and frequency converter to realize multi-speed control selected according to the various speed requirements of conveying different materials. According to the design requirements, the photoelectric sensor is used to detect the material, and the signal is sent to the PLC, and then a motor is driven by the frequency converter to drive the conveyor belt, which is conveyed according to the given corresponding frequency. The start signal of the inverter is given by the PLC output, and the inverter speed regulation is realized through two-stage speed control.

Figure 1 Haiwell PLC C60S2R

Figure 2 Internal components of the device

Figure 3 Overall view of the equipment

Five, software design

Figure 4 Start-stop control output program

Figure 5 High and low speed switching program

Figure 6 Control output program

Using the perfect various special command functions of the domestic Haiwell PLC, the speed synchronization control of the equipment can be realized quickly and accurately. It can be widely used in paper machine equipment control, long conveyor chains, long conveyor lines and other occasions that require synchronous speed control of multiple motors.

As the Haiwell PLC is adopted, the programming is simple, the cost is low, and the system is stable and reliable, so that the end user is very satisfied with the system.

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