Automation of electric autoclave control

Abstract

The article analyzes the use of an electric autoclave with the proposed system of automated control of the technological process in the conditions of a small enterprise or a small workshop of a restaurant establishment. An analysis of the implementation of the technological process of sterilization of canned goods in an electric autoclave was carried out on the created automated stand for controlling the electric autoclave under the name "Stand for automatic control and management of technological parameters of thermal equipment". Option of the modes of operation of the programmable logic controller OWEN PR200 with an electric autoclave are considered. The principle of operation of an electric autoclave in an electric circuit diagram with a programmable logic controller is given. The procedure for connecting sensors and their types, which participate in determining the parameters of a given technological process are considered. It was determined that the initial option, which is responsible for the beginning of research, is option No1, and the number of options is 18, which are programmed for specific values of the given technological process in the memory of the programmable logic controller. Methods of controlling the electric autoclave were defined directly through the display of the programmable logic controller or through the installed informative SCADA program on a personal computer. It has been previously established that the SIMP Light ENT SCADA system provides access via a local network or via the Internet to current and archived data of the technological process. It has been investigated that procedure for starting the SIMP Light ENT SCADA program is given the channel editor, checking the channel settings, selecting the desired COM port, starting test channels, the mnemonic editor, and starting the monitor. It has been experimentally proven that the heating of an electric autoclave is started either directly by a programmable logic controller or by a personal computer with a SCADA program. It has been investigated that the electric autoclave is heated during the time specified by the technological process to the specified parameters. It was determined that the parameters set by the technological process correspond to the values of the resistance thermometer and the pressure sensor for the corresponding technological process, to according option is No. 13 − sterilization of canned meat. Voltage fluctuations and non-stationarity of technological parameters within 2% were analyzed, which is associated with typical features of a programmable logic controller regulator , but the indicated indicators are within the norm.