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Design and Practice of an Elevator Control System Based on PLC

With the development of architecture technology, the 

building is taller and taller and elevators become 

important vertical transportation vehicles in high-rise 

buildings. They are responsible to transport passengers, 

living, working or visiting in the building, comfortable 

and efficiently to their destinations. So the elevator 

control system is essential in the smooth and safe 

operation of each elevator. It tells the elevator in what 

order to stop at floors, when to open or close the door and 

if there is a safety-critical issue. 

The traditional electrical control system of elevators is 

a relay-controlled system. It has the disadvantages such as 

complicated circuits, high fault ratio and poor 

dependability; and greatly affects the elevator’s running 

quality. Therefore, entrusted by an enterprise, we have 

improved electrical control system of a relay-controlled 

elevator in a residential building by using PLC. The result 

showed that the reformed system is reliable in operation 

and easy for maintenance. 

This paper introduces the basic structure, control 

principle and realization method of the elevator PLC 

control system in detail.

With the development of architecture technology, the 

building is taller and taller and elevators become 

important vertical transportation vehicles in high-rise 

buildings. They are responsible to transport passengers, 

living, working or visiting in the building, comfortable 

and efficiently to their destinations. So the elevator 

control system is essential in the smooth and safe 

operation of each elevator. It tells the elevator in what 

order to stop at floors, when to open or close the door and 

if there is a safety-critical issue. 

The traditional electrical control system of elevators is 

a relay-controlled system. It has the disadvantages such as 

complicated circuits, high fault ratio and poor 

dependability; and greatly affects the elevator’s running 

quality. Therefore, entrusted by an enterprise, we have 

improved electrical control system of a relay-controlled 

elevator in a residential building by using PLC. The result 

showed that the reformed system is reliable in operation 

and easy for maintenance. 

This paper introduces the basic structure, control 

principle and realization method of the elevator PLC 

control system in detail.

With the development of architecture technology, the 

building is taller and taller and elevators become 

important vertical transportation vehicles in high-rise 

buildings. They are responsible to transport passengers, 

living, working or visiting in the building, comfortable 

and efficiently to their destinations. So the elevator 

control system is essential in the smooth and safe 

operation of each elevator. It tells the elevator in what 

order to stop at floors, when to open or close the door and 

if there is a safety-critical issue. 

The traditional electrical control system of elevators is 

a relay-controlled system. It has the disadvantages such as 

complicated circuits, high fault ratio and poor 

dependability; and greatly affects the elevator’s running 

quality. Therefore, entrusted by an enterprise, we have 

improved electrical control system of a relay-controlled 

elevator in a residential building by using PLC. The result 

showed that the reformed system is reliable in operation 

and easy for maintenance. 

This paper introduces the basic structure, control 

principle and realization method of the elevator PLC 

control system in detail.

With the development of architecture technology, the 

building is taller and taller and elevators become 

important vertical transportation vehicles in high-rise 

buildings. They are responsible to transport passengers, 

living, working or visiting in the building, comfortable 

and efficiently to their destinations. So the elevator 

control system is essential in the smooth and safe 

operation of each elevator. It tells the elevator in what 

order to stop at floors, when to open or close the door and 

if there is a safety-critical issue. 

The traditional electrical control system of elevators is 

a relay-controlled system. It has the disadvantages such as 

complicated circuits, high fault ratio and poor 

dependability; and greatly affects the elevator’s running 

quality. Therefore, entrusted by an enterprise, we have 

improved electrical control system of a relay-controlled 

elevator in a residential building by using PLC. The result 

showed that the reformed system is reliable in operation 

and easy for maintenance. 

This paper introduces the basic structure, control 

principle and realization method of the elevator PLC 

control system in detail.

With the development of architecture technology, the building is taller and taller and elevators become important vertical transportation vehicles in high-rise buildings. They are responsible to transport passengers, living, working or visiting in the building, comfortable and efficiently to their destinations. So the elevator control system is essential in the smooth and safe operation of each elevator. It tells the elevator in what order to stop at floors, when to open or close the door and if there is a safety-critical issue.

The traditional electrical control system of elevators is a relay-controlled system. It has the disadvantages such as complicated circuits, high fault ratio and poor dependability; and greatly affects the elevator’s running quality. Therefore, entrusted by an enterprise, we have improved electrical control system of a relay-controlled elevator in a residential building by using PLC. The result showed that the reformed system is reliable in operation and easy for maintenance.  This paper introduces the basic structure, control principle and realization method of the elevator PLC control system in detail.

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