Mitsubishi PLC application in the double color gravure press Q

1. Company introduction Shanghai hai run printing machinery co. , LTD. Is a company specializing in printing machinery. The company main products include sheet-fed gravure press, round flat hot stamping machine, die-cutting machine and other printing and packaging machinery and before printing post-press equipment, has certain influence in the industry. Especially on some imported second-hand equipment, have strong resources advantage. In the company's products, including the conventional inverter, servo system, PLC controller, touch screen and other FA products. At the same time, according to the different products, will have different requirements, the FA's use of the product is different also. 2. Equipment illustrate double-color gravure press is used for sheet-fed gravure printing, the whole system including feida, color, two color group, paper and so on four parts, mainly include: the main drive, paper, printing, paper, oil, paper, detection, gas path and fan control circuit composition and so on. Main drive is controlled by a 35 kw inverter, to provide the entire unit the transmission power in the process of printing, which include the feida part of the paper, printing paper roller rotation and institutions. Paper-feeding part, mainly has the main counter control, as well as the paper early, late, running deviation, double testing functions such as zhang. In part at the same time also includes the paper counting, production of production information monitoring functions. Printing part, mainly including the function of the plate version, and change the edition, as well as the relevant version of the function. At the same time there will be other auxiliary functions, such as ink quantity control, distributing, printing control, and other functions. Paper part, mainly including the automatic speed tracking control of the paper, paper main bedplate and control, and other functions. System configuration diagram of the system using the mitsubishi QPLC, four CC - The Link remote station, touch screen, inverter and other automation products. All the scene of the signal, through the CC - Enter the main Link field bus. Debugging with CC - condition and experience system When the Link way of fieldbus, wiring, all the I/O points applied access remote module, less errors occur, it is easy to find. Is the biggest problem encountered in the debug level of touch screen even problem, in this system, in the paper, color, two color group has F930 touch screen as human-machine interface system. At the beginning of the actual debugging process, often encounter on communication through, after careful analysis, hardware, in addition to all adopt the shielded cable, RS232 communication, as far as possible to shorten the length of the cable, and line, avoid the power cable; RS422 communication, with the method of shielded twisted-pair cable, and matching and resistance. Software, on the touch screen Settings, let touch screen initialized according to the communication order. After these two aspects of processing, the problem solved. Through using the advanced field bus technology, can avoid many problems in installation; At the same time, through to the solution of the problem, also gave me some installation experience, must be in strict accordance with the specifications for the construction, it is asking for trouble. User feedback system from debugging success in the factory, and brought it to the user after the installation, start production has been three years, system is stable and reliable operation, good results have been achieved, manufacturers and users are satisfied.
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