Development of a measurement and control system for a 10 kW@20 K refrigerator based on Siemens PLC S7-300

26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016

材料科学;物理学

Li, J.^1,2 ; Liu, L.Q.^1 ; Liu, T.^3 ; Xu, X.D.^1 ; Dong, B.^1 ; Lu, W.H.^1 ; Pan, W.^1 ; Wu, J.H.^1 ; Xiong, L.Y.^1

Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing

100190, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

Beijing Sciample Technology Co. Ltd., Beijing

100190, China^3

关键词: Chinese Academy of Sciences;    Configuration software;    Cooling power;    Human Machine Interface;    Industrial Ethernets;    Institute of Physics;    Measurement and control systems;    Upper computer;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012010/pdf
DOI  :  10.1088/1757-899X/171/1/012010

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A 10 kW@20 K refrigerator has been established by the Technical Institute of Physics and Chemistry, Chinese Academy of Sciences. A measurement and control system based on Siemens PLC S7-300 for this 10 kW@20 K refrigerator is developed. According to the detailed measurement requirements, proper sensors and transmitters are adopted. Siemens S7-300 PLC CPU315-2 PN/DP operates as a master station. Two sets of ET200M DP remote expand I/O, one power meter, two compressors and one vacuum gauge operate as slave stations. Profibus-DP field communication and Modbus communication are used between the master station and the slave stations in this control system. The upper computer HMI (Human Machine Interface) is compiled using Siemens configuration software WinCC V7.0. The upper computer communicates with PLC by means of industrial Ethernet. After commissioning, this refrigerator has been operating with a 10 kW of cooling power at 20 K for more than 72 hours.