In people’s daily life, the existence of elevators can not be ignored, their functions and functions are extremely important, especially in high-rise buildings.
In this paper, the author mainly from the basic structure of the control system and software design, analysis of the application strategy of programmable controller in elevator control system. At present, the expansion of urban scale in China objectively makes the construction of high-rise buildings enter a new level. As the main transportation work in high-rise buildings, the existence of elevators has very obvious use value. PLC has very reliable hardware equipment, which makes its role in elevator design more and more obvious.
Conceptually, the programmable logic controller (PLC) mainly inputs digital signals and analog signals, then outputs them after corresponding logical operations, and finally achieves the expected control process, and the programmable logic controller is a small equipment setup. Programmable controller can combine computer control technology with relay technology, which has been gradually applied in more fields. Compared with developed countries, China started late in this field, and it is imminent to realize modernization in an effective time. First of all, the most obvious characteristic of PLC control system is that it can reduce the part of mathematical operation.
In this way, it can ensure that the function of logical operation is satisfied, and it can also realize the standardization of input and output signals. It is combined with various controllers and gradually applied in the control process of modern equipment. Compared with other related technologies, the PLC control system has very high reliability and stability. At the same time, the anti-jamming ability is more objective, and has a certain degree of protection function. If there is a fault, it can help the elevator stop in a short time. In the process of using PLC, it usually exists in the form of ladder diagram, which is easy to understand and can reach the consensus of technicians to a certain extent. In the programming software, PLC can display the operation of the circuit and help the relevant personnel to monitor the status. From the previous studies, thermostatic element we can see the importance of elevators in high-rise buildings. Elevators themselves have obvious complexity. In terms of functions, there are relatively many demands.
At the same time, there are higher requirements for the safety of elevators. Therefore, in the process of elevator control, there are always some difficulties. When necessary, we need to use PLC to replace the original relay system, so as to complete the work and improve the efficiency to a certain extent. At the same time, excluding some high power devices, such as switches and main circuit contactors, most of the relays can be replaced by PLC in the process of application to elevators. The existence of this phenomenon, on the one hand, can effectively reduce the difficulty of the control cabinet, so that operability and efficiency can be improved to a certain level. After the elevator is put into use, it will inevitably be affected by internal and external factors, resulting in corresponding fault problems. The existence of PLC technology can help to realize the monitoring of elevator operation status. In this way, the relevant staff can use this technology to separate the fault signals and separate the separated signals. Input into the PLC, after the automatic logic judgment of the PLC, the output equipment exists in the form of coding, which makes the specific fault parts of the elevator be handled. Generally speaking, there are two types of layer selection in the application of PLC, which are divided according to time or control distance. Specifically, when the mechanical characteristics of the motor are relatively soft, there are often large errors when time is taken as the principle and the corresponding layer selection and speed change are carried out. However, if the distance principle is taken as the basis, the rotary encoder and the PLC counter can be accumulated together, and the above two can be combined organically. For PL The application effect of C controller has a driving effect. Double elevator operation is a trend of current elevator development. If the elevator has been controlled by PLC technology and there are two elevators with the same structure, in this case, the special communication board in this technology can be used to realize parallel connection and achieve the best effect. When the elevator is in need, the corresponding part of the PLC system often compares and calculates the call time of the elevator to and from, completes the elevator transportation task with a higher efficiency, and chooses the optimal path. Generally speaking, compared with the existing elevator control system, the safety and reliability of the programmable controller are more obvious, therefore, it should be given full attention. For our country’s industry enterprises, we should make modern transformation with the help of programmable controller. On the one hand, it can play the role of programmable controller and make it play a valuable role in elevator operation. On the other hand, it is of great significance to promote the development of our elevator industry.