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The use of new coal crushing plant
The use of new coal crushing plant, new coal crusher for sale, Secondary wiring complexity between the various relays interconnected cumbersome , too many connectors and terminals , troubleshooting problems , affecting the normal operation of equipment and systems investment . Control means for the crusher problems analysis, the control means can not satisfy the needs of the device operation . Complex relay style electrical control design, to the normal operation of the equipment brought unwanted effects . To radically change the current low level of control , the control must take advantage of new technology and equipment , its upgrade. Greatly simplifying the design and reducing its secondary wiring relay applications while optimizing and improving the match between the Coal Handling and ensure the normal operation of the crusher and systems.
The transformation of the traditional relay control system PLC control system. As a result of PLC control , a lot of switching from the non-contact semiconductor complete, and comes with a self-test and supervise PLC functionality, reliability and maintainability has been greatly improved. The control system wiring can be many and complex , bulky , high failure rate , and increased functionality is very difficult to change the relay control logic , to less wiring , small size , flexibility and scalability, easy to modify the memory control logic way . And the relay in parallel to the existing mode of operation , the PLC control of the periodic changes in the scan cycle series work, thereby improving the reliability of the equipment .
Equipment selection . The control system uses the German company Siemens S7-200 ultra-small programmable controller . The controller plus its compact modular integral system configuration , good scalability and powerful instruction , making it almost perfectly meet the requirements of small-scale control , and has good reliability , flexibility, and strong adaptability. The models chosen CPU-224, the host input / output points to reach 24 points , the largest of seven expansion modules , and there are RS-485 communication / programming port , PPI agreements and other communications capabilities , it can not only stand-alone operation , You can also input / output expansion. It is compact, highly reliable , fast , and a rich instruction set. PLC wiring diagram. PLC control program .
After the completion of the transformation, clear and concise layout control cabinet wiring , electrical components has been streamlined to maximize , after two years of operation observed a significant reduction in the failure rate of equipment , greatly improving the reliability of the equipment. Its annual crusher PLC control deficiencies related to 0 .
In statistics configuration for the existing arrangement disordered solids , find trouble. Neither chronological order maintenance , etc. are not in alphabetical order, each time to find a material , was from the beginning to find the tail. Such as: order statistics virtual tank configuration is four original data , then I will order a new maintenance materials into a new eight-digit number , such as ” 20083034 ” indicates ” 2008 One polypropylene Warehouse 34 maintenance of new materials . ” As a result, the configuration of the virtual tank configuration statistics can be sorted according to the order , it is also convenient to find . You can also follow ” referred to as” the first letter arranged , so also easy to find .
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