Abstract

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.

Details

Title
Design of Multi-speed Motor Control System Based on S7-1200 PLC and Frequency Converter
Author
Zhou, Hengchao; Li, Guangpeng; Liu, Yuanyong
Section
Chemical Engineering and Materials Science
Publication year
2020
Publication date
2020
Publisher
EDP Sciences
ISSN
25550403
e-ISSN
22671242
Source type
Conference Paper
Language of publication
English
DOI
https://doi.org/10.1051/e3sconf/202016505012
ProQuest document ID
3178311847
Copyright
© 2020. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.