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In order to realize the continuous operation of high-temperature pressure crushing machinery, an electrical control system with a new architecture was developed by means of theoretical design and simulation verification. According to the process configuration of a petrochemical project, the conventional "one control one" explosion-proof electrical control cabinet was upgraded to the "one control and multiple" mode in the form of the site, and placed in a safe area, which effectively reduced safety risks, reduced costs and achieved centralized control. The control system adopts the latest PLC1517H redundant CPU from Siemens and communicates with distributed I/O in a redundant manner. Through modular programming, UDT structure, permanent area and other methods, the programming and configuration are more accurate and efficient. The safe and reliable MODBUS RTU is used to communicate with the central control system, so that it can monitor the running state of the equipment. Through on-site operation feedback, the control system ensures the stable and reliable operation of the equipment, and the operation and maintenance convenience are better.