Abstract
In recent years, as a result of the urban development, followed the building to the high-level development advancement, the elevator is taking one kind of longitudinal traffic facilities, already became in the daily life the essential essential item. Elevator's type are many and varied, comes the minute according to the control mode to have the signal control elevator, the collection elects to control the elevator, the last part chooses the control elevator and so on. this design has mainly completed PLC in the elevator automation control application, mixed economy performance and reliable and so on several big factors, has chosen FX2 in the lift control system series PLC, it is the Mitsubishi Corporation high performance small machine's representative works. Because elevator's movement is according to the floor and the sedan theater box calling signal, the traveling schedule signal carries on the control, but the floor and the sedan theater box's call is stochastic, therefore, the systems control uses the random logic control, namely, in realizes in elevator's basic control request foundation by the order logical control, According to the stochastic input signal, as well as elevator's corresponding condition, at the right moment controls elevator's movement. In the system PLC is control system's core, elevator's each kind of signal delivers PLC, then sends out the control signal and the pilot signal by PLC controls elevator's running status for the gating installment and the floor monitor, the PLC basis input signal and the calling signal the position which locates to the present elevator determines elevator's movement direction automatically, After arriving at the goal level, the automatic horizontal level, the parking, the switch gate, in the movement process demonstrated that elevator's physical location and the movement direction, simultaneously complete to the calling signal registration, number work and so on guarantee the number, to disappear; To elevator movement's some peculiar circumstances, like stops, the overload, to flush anxiously goes against, hits the bottom and so on to carry on processing or the warning automatically. This article mainly completed the level building relay return route in the software aspect, to elect to the return route, to choose the level return route, the instruction and summons return route's design.
Key word: The collection chooses the control; Random logic control; Order logical control
