The weighing and mixing system collects the weighing signals of each dosage scale in real time, can automatically tare, automatically calibrate zero and automatically correct the error, and selects and controls the dosage according to the specified formula ratio and relevant algorithms, and judges at any time and sends out the switching signals to the corresponding feeder, electronic weighing door, and mixing machine door. In the process of dosage, it is an important guarantee for safe production to detect the operation status of controlled equipment and find out the problems in time. The system can dynamically detect the status of drive motor, travel switch and other equipments of each feeder and electronic weighing gate, and alarm immediately once errors and failures are found.
020-34563445The weight of raw materials is detected in each batching scale, and the Feeder adopts spiral type, PLC controls the start and stop of the feeder motor corresponding to each material according to the programmed feeding order through the corresponding control software. The size of the dosage is determined by the formula calculation. The upper computer can dynamically display the weight signal of each batching scale, and has the switching status display of the corresponding motor of each feeder. At the same time, the upper computer completes the functions of formula management, report display, query and printing.
There are three levels of passwords for operators, process operators and chief engineers according to process requirements, and each process parameter is saved and reports are processed. Ensure the system security, strengthen the production management, and provide a basis for the assessment of economic responsibility system.
The weighing module is selected to detect the weight signals of the two Dosage systems respectively, and the analog signal of the weighing module is transmitted to the weighing instrument to be displayed, and the PLC gets the weight signal of the raw material by receiving the BCD code output from the weighing display instrument. Switching input signal, in order to prevent the digital signal into the PLC due to interference and make the control system misoperation, in the software production added anti-jamming measures to increase the reliability of the system. Relay output module is selected to amplify and isolate the load with large current, plus relay to ensure the safe operation of the host PLC, using the RS-232 port on the CPU in the PLC to communicate with the host computer.
