ABB 5SHX08F4502 可控硅控制单元模块处理器驱动器

ABB 5SHX08F4502 可控硅控制单元模块处理器驱动器

对PLC的经济分析，应从以下几方面考虑:

(1)从影响成本的各个因素综合考虑从目前生产设备控制装置来说，有三种类型:①继电器控制。②半导体器件控制。③PLC控制。

价格仅是选择PLC品牌的一个因素，而可靠是选择时需要考虑的又一个因素。

(2)从设计、生产周期长短考虑不论是老设备改造，还是设计新的生产机械设备，毫无疑问，生产、设计周期越短越好，甚至希望边设计、边安装

边调试和边生产，特别是产品新换代，生产工艺改造，不需改动现有生产设备及其外部接线，就能马上组织生产，这不仅节约了劳动力，而且新产品能尽快投入市场。这无疑给企业增加了活力，提高了经济效益。如果把这些要求得以实现，继电器或半导体都不能满足，而PLC则完全可以实现。这是因为若用PLC不必改动外部设备接线，只要在软件上作文章就可以了。也就是说只要改变梯形图，按照新工艺要求重新输入新程序或修改原程序即可。这既经济又简捷，可以达到事半功倍的目的

众所周知，目前我国75%的生产机械设备，都是采用继电器控制，除了可靠差外，设计程序也很繁杂。从方案的确立到技术条件的设计以及施工的设计，图面的工作量很大，这势必造成设计周期长。而采用PLC控制可以大大缩短设计周期，甚至有些文件资料也不必绘制成图。设计完全可以利用编程器上屏幕显示来输入，或修改程序使得梯形图能准确无误地反映生产要求。编程也可根据新产品对生产提出的新工艺要求，重新编写程序并把它存储在EEPROM模块中去，需要加工哪个产品的程序，操作何以随时调用，这既方便、简单又可保密。开发这种软件对优化生产过程，提高产品数量和质量，提高劳动生产率，具有实际意义。仅此一点也深受生产及设计者的欢迎。

ABB 5SHX08F4502 可控硅控制单元模块处理器驱动器

The economic analysis of PLC should be considered from the following aspects:

(1) From the comprehensive consideration of various factors affecting the cost from the current production equipment control device, there are three types :① relay control. ② Semiconductor device control. ③PLC control.

Price is only one factor in choosing a PLC brand, and reliability is another factor that needs to be considered when choosing.

(2) Considering the length of the design and production cycle, whether it is the transformation of old equipment or the design of new production machinery and equipment, there is no doubt that the shorter the production and design cycle, the better, and even hope that the design and installation

Commissioning and production, especially the new generation of products, production process transformation, without changing the existing production equipment and its external wiring, you can immediately organize production, which not only saves labor, but also new products can be put into the market as soon as possible. This will undoubtedly increase the vitality of the enterprise and improve the economic efficiency. If these requirements can be realized, relays or semiconductors can not meet, and PLC can be fully realized. This is because if the PLC does not need to change the external equipment wiring, as long as the software is used as an article. That is to say, as long as the ladder diagram is changed, the new program can be re-entered or the original program can be modified according to the new process requirements. This is both economical and simple, can achieve the purpose of twice the result with half the effort

As we all know, 75% of China's production machinery and equipment are controlled by relays, in addition to poor reliability, the design procedure is also very complicated. From the establishment of the scheme to the design of technical conditions and the design of construction, the workload of the drawing is very large, which is bound to cause a long design cycle. The use of PLC control can greatly shorten the design cycle, and even some documents do not have to be drawn. The design can be input using the programmer's on-screen display, or the program can be modified so that the ladder diagram can accurately reflect the production requirements. Programming can also be based on the new process requirements of new products for production, rewrite the program and store it in the EEPROM module, which product needs to process the program, the operation can be called at any time, which is convenient, simple and confidential. The development of this software is of practical significance to optimize the production process, improve the quantity and quality of products, and increase labor productivity. This alone is also welcomed by producers and designers.

ABB 5SHX08F4502 可控硅控制单元模块处理器驱动器

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