Based on years of practical experience in industrial automation, combined with the latest domestic and international cases, this set of high-precision metering and batching control system (mixing control system) has been developed and produced, and it has successfully and stably operated on-site in many industrial industries. For example: ceramic batching control system, glass batching control system, chemical batching system, food additive batching system, grain weighing control, coal blending control system, sintering material batching control, metallurgical protection material batching ratio control, concrete mixing control, pharmaceutical Factory batching control, etc.
The system adopts industrial touch screen as human-machine exchange data center (industrial touch screen is fully compatible with ordinary touch screen, which is more suitable for industrial harsh environment) + weighing PLC + weighing module + load cell + weighing actuator. Weighing software (measuring software, control software), weighing PLC, load cell, weighing bin (also called bucket scale, bin scale, the method can be incremental scale and decrement scale); actuator-general For reamers, belts, electric vibration machines, controllable valves, etc., and in some cases use frequency converter control.
This kind of automatic weighing method for raw materials and ingredients is a dynamic automatic weighing method from the perspective of the whole production process, but the measurement is static at the moment of measurement, which ensures the accuracy of measurement control.
The software of the PLC's lower computer is developed by our company under the Windows operating system. The tailor-made software control efficiency will be higher, and the programming software is extremely convenient and quick to use.
l. It is suitable for the upper computer or commercial computer of the XP system, and the laptop computer can be used for unlimited development and application;
2 . The structure of industrial touch screen + weighing PLC improves the reliability of the system. In addition to issuing initial process parameters and control instructions, the touch screen also participates in the real-time control process of the PLC. The PLC can also successfully complete the current production tasks;
3. Support high-level language and assembly mixed programming, which not only ensures the reliability of the system, but also facilitates software upgrades;
4. Chinese (simplified or traditional) or English (as required) friendly man-machine interface, the operation interface can display the process flow chart, formula number, formula weight, actual ingredient weight, ingredient error, mixing time, trace addition prompt and response, and equipment operating status , Fault information, etc., the operation is very simple, it only takes 1 hour to learn to operate;
5. Dynamic process flow display screen, the operator can intuitively monitor the entire batching control process through the color touch screen, including the working status of the silo conveying equipment, weighing data, the working status of the mixer and various process gate valves, etc.;
6. Parameter modification and function setting are more flexible, and the system is highly intelligent;
7. Output data can be stored in the hard disk;
8 . There are network ports;
9 . The system can detect, monitor, display, store and print instantaneous signals, variables, parameters, etc. in real time
10. With zero point/tare fast removal function.
11. Functions such as system misoperation prevention and administrator level operation can be set;
12. With self-diagnosis function;
13. Measurement control accuracy is 0.2% (depending on the situation on site).
2. Part of the system screen:For the program interface example, please refer to the actual weighing frame program prepared initially (in actual production and compilation, it can be modified several times according to the site conditions and requirements as required, which is also the benefit of tailor-made programs).
three. What the measurement software system contains1. The metering control has manual, semi-automatic and fully automatic operation modes, and can be switched at any time;
2. Formula table: formula number, formula name, raw material barrel number, raw material name, measurement weight, can store more than 2000 formulas;
3. Raw material list: raw material barrel number, raw material name, measurement level, drop, large and small material supply, valve opening and closing time;
4. Dynamic measurement program table: including the name of the measurement organization, measurement time, stabilization time, output, and zero return;
5. The main interface of the measurement display: including the name of the measurement institution, the total weight of the measurement setting, the actual total weight of the current measurement (dynamic display), the name of the material currently measured, the set weight of the currently measured material, and the actual weight of the current measured material ( Dynamic display);
6. The main interface of metering control: set the following button switches-metering start, metering stop, forced single-step stop (skip a certain kind of raw material metering), forced all stop (skip directly to the last end), metering (dosing) reset ( Return);
7. Raw material statistics report: it can calculate the consumption weight of certain, certain or all raw materials on the day, the current month or within a certain period of time;
8. Formulation production statistics report: It can count the production weight of a certain, a few or all formulas on the day, the current month or a certain period of time in a certain month, and the two measurement institutions of 1# and 2# can be separated or combined for statistics;
9. There is an alarm when the upper and lower limits of the measurement are exceeded;
10. Hierarchical management of user operation authority: a. Super user-can set and adjust all functions; b. Recipe administrator-can only set recipes; c. System maintenance administrator: can only set and modify measurement parameters such as load cells, but not watch To any recipe information;
in conclusionKewei's CZ-12M12R-1HAD is a stable and excellent electronic weighing host. We can program various functions by integrating it into the EX1 module, and then realize the precise batching function of multiple recipes and multiple materials. This has been confirmed in the flour batching system project of Henan Limin Machinery in May 2014. This system's highly intelligent automatic control, free interference control, process multi-point monitoring, and real-time recording all bring great convenience to production. In addition, it also supports a configuration software package with multiple materials and multiple recipes, which contains example programs for each functional unit, such as the Paidatun package, which can be called directly. You can also program these functional units yourself, and once the program is completed, you can do it once and for all. Coupled with its high cost performance, Kewei's CZ-12M12R-1HAD weighing host will gradually be more widely used in the batching industry.
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