When the metering and feeding system is working, the software operator first fills in the feeding information such as supplier, material name, and transportation number on the interface, and puts the control in the starting state to start the control system. The material is unloaded at the top of the reactor, and the material enters the reactor through the filter screen. After the material completely enters the reactor, the weighing value of the instrument is stable and the indicator light is bright. Notify operator to stop feeding operation. At the same time, the weighing instrument weighs and detects the mass of the material in the reactor and accumulates it into the total amount of the material.
020-34563445The feeding system is a two-level control system composed of industrial computer and PLC, and TCP/IP communication is carried out through ETH-iBUS Ethernet conversion module. PLC uses MODBUS protocol to communicate with on-site weighing instruments and frequency converters such as feeding, batching and conveying. Complete the centralized management of the whole process using the configuration software to realize the dynamic monitoring of the progress of the batching process and the real-time monitoring of the working status of each device in the system, and can print the batching data, alarm records and faults. The real-time data exchange between PLC, weighing instrument and frequency converter is realized through MODBUS communication protocol, and the processing and calculation of batching data and the control of batching process are completed. Because the PLC accepts the communication signal, there is no need to carry out the analog conversion calculation, and it will not increase the excess error; PLC direct control of batching equipment can reduce the risk of system failure, and truly realize the purpose of centralized management and decentralized control. In the dosing process, the PLC constantly reads the weight value from the weighing instrument, compares it with the set formula and procedure, makes a judgment, and controls the start and stop of the Feeder and the speed and slow feeding. After the feeding is completed, start the conveyor belt and the distribution electric vibration machine to transport the material and the mixed material.
The Batching system has the functions of human-computer interaction, communication, display, storage, printing, etc., and has the function screen of data, graphic display, status monitoring, data input, information storage and other related operations. The Weighing system can realize real-time process data monitoring, simulated display of process flow, real-time data record checking, system operator authority setting, process parameter setting, event alarm setting during operation and manual and automatic control switching. The field control instrument in the weighing and batching system displays the flow rate, load, cumulative value and temperature in real time. Temperature indication through the field temperature display instrument, pressure indication through the field pressure display instrument and the electric flow of the motor to the field display instrument remote to the central control room centralized display. The inverter is equipped with an automatic switching switch to communicate with the main control computer.
