The Elevator is an advanced plc application used to illustrate the principles of PLC interfacing and control based on a real life application.
Starting with simple programme sequences to control elevator speed, direction and floor arrival/departure, the student can progress to more advanced floor request handling. The elevator car moves between floors in response to requests from call buttons at each floor and ‘within’ the elevator car (located on an external panel).
Sensors indicate which floor the elevator car is at and provide advance warning to allow the car to be slowed prior to arriving at the destination floor. A brake allows the car to be held at a floor while the motorised car door is operated to allow occupants to enter or leave and a sounder is provided to announce arrival.Kembali