型号：3HAC7681-1
品牌：ABB
加工机床在电气和液压的时间衔接控制方面容易发生故障，而且故障较难排除。但是如果适当地将PLC技术应用在机床电气控制中，可以代替过去那些接触器。将PLC技术.运用在机床电气控制中，对其时间精准度进行一定的改造，使其可以实时的显示每个主体设备的情况变化，从而实现组成控制、故障报警画面、监管相互结合的一-体化，提高电气.设备的效率。
在火电控制系统中的应用
由于技术水平有限，传统的火电控制系统多采用电磁型继电器对整个运行过程加以控制，但其中的电磁元件过多，以至于存在着诸多触点，稍有不慎就可能会影响到整个系统的正常运行，而且内部接线十分复杂，-旦出现故障，维修起来难度很大。而PLC技术不需要太多的实物元件，相应的触点也就大大减少，使得系统更加可靠稳定，效率也更高。同时也给工作人员的操作带来便利，工作量明显减少，因为有内部程序控制，只需要按照要求和需要及时分闸、合闸，或进行其他操作，便能推动系统正常运行。该技术具有自诊功能，–旦发生故障，会自动保护系统，并显示指示信号,如此便可降低损害。以往的控制器在内部接线时，还需要配备专门的闪光电源,而PLC技术的应用则可以省去这一-环节,直接接线。除此之外，PLC技术因为抗干扰性强，能够自动分析火电系统的运行状况，使得供电更加可靠，而且即便出现故障，由于信号可以集中显示，从而使得维修工作的难度进一步降低。
结语
综上所述，机电自动化在当今时代应用的极为广泛，而且许多先进的功能在实现的过程中都与PLC技术息息相关。随着技术的不断更新，以往自动化控制系统中所存在的问题也都被一—解决，由此可以看出，PLC技术在提高机电自动化控制水平_上有着十分重要的意义。
Processing machine tools in electrical and hydraulic time connection control is prone to failure, and the fault is difficult to eliminate. But if the PLC technology is properly applied in the electrical control of machine tools, it can replace those contactors in the past. The PLC technology is applied in the electrical control of machine tools, and the time accuracy is reformed to a certain extent, so that it can display the changes of each main equipment in real time, so as to realize the integration of control, fault alarm screen and supervision, and improve the electricity. The efficiency of the equipment.
Application in thermal power control system
Due to the limited technical level, the traditional thermal power control system uses electromagnetic relay to control the whole operation process, but there are too many electromagnetic components, so that there are many contacts, a little mistake may affect the normal operation of the whole system, and the internal wiring is very complex, – once the fault, maintenance is very difficult. And PLC technology does not need too many physical components, the corresponding contacts will be greatly reduced, making the system more reliable and stable, and higher efficiency. At the same time, it also brings convenience to the operation of the staff and significantly reduces the workload. Because of the internal procedure control, it only needs to operate in accordance with the requirements and needs of the time division, closing, or other operations to promote the normal operation of the system. The technology has a self-diagnosis function — if there is a failure, it will automatically protect the system and display an indication, so that the damage can be reduced. The previous controller in the internal wiring, but also need to be equipped with a special flash power supply, and the application of PLC technology can eliminate this link, direct wiring. In addition, PLC technology because of strong anti-interference, can automatically analyze the thermal power system operating conditions, making the power supply more reliable, and even if there is a fault, because the signal can be centralized display, so that the difficulty of maintenance work is further reduced.
conclusion
To sum up, electromechanical automation is widely used in today’s era, and many advanced functions are closely related to PLC technology in the process of realization. With the continuous update of technology, the problems existing in the past automatic control system have been solved, it can be seen that PLC technology has a very important significance in improving the level of electromechanical automatic control.
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