| Issue |
E3S Web Conf.
Volume 165, 2020
2020 2nd International Conference on Civil Architecture and Energy Science (CAES 2020)
|
|
|---|---|---|
| Article Number | 05012 | |
| Number of page(s) | 4 | |
| Section | Chemical Engineering and Materials Science | |
| DOI | https://doi.org/10.1051/e3sconf/202016505012 | |
| Published online | 01 May 2020 | |
Design of Multi-speed Motor Control System Based on S7-1200 PLC and Frequency Converter
1 School of Intelligent Manufacturing and Service, Shandong Institute of Commerce and Technology, Jinan, China
2 School of Mines, China University of Mining and Technology, Xuzhou, China
3 Department of Electrical Engineering, Shandong Vocational College of Industry, Zibo, China
ahengchao78@163.com b15098886718@163.com c644464621@qq.com
In order to realize multi-speed control of motor, a control system based on S7-1200 PLC and Siemens MicroMaster420 frequency converter is designed. Through the analysis of the cooling fan control requirements, the hardware system and software programming of the whole control system are designed. The PLC control unit of the control system completes signal acquisition, logic control and communication, etc. The system sets the parameters of the converter by changing the on-off state of the converter digital input, and further realizes the steering change and speed adjustment of the motor. Through experimental comparison, it is concluded that the control system designed in this paper can save more than 30% of the electric energy. The load of the motor is greater, and the energy-saving effect is more obvious. The advantages of the control system are simple circuit structure and convenient operation. The designed control system is simple and effective to realize the multi-stage control of the motor and improve the reliability and stability of the motor.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.