SJK Intelligent Variable Frequency Human Machine Control System

According to the actual operational requirements, the water supply pressure is first set, and then powered on for operation. The pressure sensor monitors the pipeline pressure and converts it into an electrical signal feedback to the frequency converter. After analyzing and processing the feedback value and the set value, the frequency converter controls the operation of the water pump, ultimately achieving consistency between the feedback value and the set value. When the water consumption increases, the system pressure decreases, the feedback value is less than the set value, the output voltage and frequency of the frequency converter increase, the pump speed increases, and the water output increases; When the water consumption decreases, the speed of the water pump decreases, reducing the water output and maintaining the set pressure value of the pipeline network. When multiple water pumps are running in parallel, the addition and subtraction of the pumps are automatically completed to achieve automatic constant pressure water supply. For example, the entire system consists of four water pumps, a frequency converter, a PLC, and a PID controller (PLC is an electronic device designed specifically for digital operations in industrial environments). It uses programmable memory to store instructions for performing logical operations, sequential operations, timing, counting, and arithmetic operations internally, and can control various types of machinery or production processes through digital or analog inputs and outputs. In addition, the above system is also equipped with peripheral auxiliary circuits to ensure that the automatic control system can maintain system operation through manual adjustment in case of faults, ensuring continuous production.