ABSTRACT
With the development of modern economy and the improvement of people's living s
tandards,, the construction of high-quality buildings, elevators have become a means
of transportation inside the building, and its development space is also expanding. In
order to stabilize the rapid development of elevators and normalize people's daily life,
elevators must be safe and reliable.
PLC is a kind of digital electronic equipment specially designed for industrial applic
ations.. It not only keeps the advantages of the relay control simple and easy to
understand, high control accuracy and high reliability, but also makes the control
program change with the change of the process. It has the characteristics of convenient
communication with the computer and convenient maintenance, In addition, different
types of machine equipment or production processes are controlled by using digital or
analog inputs and outputs for programmable operation instructions, sequence control,
timing, counting and operation. Therefore, PLC has been widely and deeply applied in
the field of elevator control.
The logic function of the relay can be executed by PLC. The most important is the
programmable function of PLC. If the elevator control function is changed, there is no
need to change the hardware and wiring like the relay control system. Therefore, the
PLC controller USO greatly improves the safety and reliability of the elevator system and
reduces the cost. At present, The elevator control technology is not perfect,we must
We must improve the performance of the elevator, improve the working efficiency, and
meet the needs of passengers. Therefore, it is of great significance to explore and
design the elevator control system based on PLC.
Key words: elevator control, PLC, inverter
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