1. Application background

With the gradual development of industrial automatic flowers, 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 control the speed of multiple motors of the equipment synchronously. Using the powerful and easy-to-use logic functions of IkonDrives domestic PLC, the synchronous control of multiple motors can be easily realized. The following is an introduction to this application.

2. Application requirements

The project requirement is to realize high-speed and low-speed synchronous control of 5 independent conveyor belts through PLC and inverter. It has the function of automatic stop in place, which can realize the purpose of controlling the forward and reverse rotation of the motor.

3. Solutions

The project mainly includes 1 to 5 sections of conveyor belt, drive motor, inverter, PLC and other components. Frequency conversion speed regulation is now used 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 transmitted to the PLC, and a motor is driven by the inverter to drive the conveyor belt, and it is conveyed according to the given corresponding frequency. The starting signal of the inverter is given by the PLC output, and the speed regulation of the inverter is realized by two-stage speed control.

4. Hardware configuration

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Figure 1 Haiwell PLC C60S2R

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Figure 2 Internal components of the device

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Figure 3 Overall view of the equipment

5. Software Design

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Figure 4 Start-stop control output program

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Figure 5 High and low speed switching procedure

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Figure 6 Control output program

6. Conclusion

Using the perfect various special command functions of domestic IkonDrives 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 requiring synchronous control of multiple motor speeds.

Because IkonDrives PLC is adopted, the programming is simple, the cost is low, and the system is stable and reliable, which makes the end user very satisfied with the system.