Freight elevators controlling four floors with Zelio PLC SR3B261FU and VSD ATV71Lift for Saving Energy Universitas PGRI Semarang
Adhi Kusmantoro, Agus Nuwolo
In designing the program using the freight elevator control function block diagram (FBD) of Zelio Soft 2 schneider electric. If the simulation is produced according to design the program results can be downloaded into a Zelio smart relay SR3B261FU type. In the design used four key objectives in accordance with the purpose of positioning the floor or desired. To move the elevator up or down just used an electric motor which can rotate forward and reverse. Power circuit serves as an interface between PLC Zelio motor and the motor lift door. The length of time the elevator doors open when the lift stop is 2 seconds, and the length of the door shut again within 5 seconds. In the design of the power circuit device uses VSD (variable speed drive) which serves to regulate the speed of the motor of the elevator, so when almost reached certain goals lift running slower and stop right at the destination floor. VSD in addition serves to adjust the speed of the motor, it also serves for braking the motor of the elevator. VSD is used to set the motor forward and reverse rotation alternately. Programs that have been created can be simulated in advance before being downloaded into the Zelio PLC device, so that errors can be known from the beginning of the program. The use of PLC and VSD generate electric power saving in the use of the lift.