{ "item_title" : "Basic PLC and Elevator Control System", "item_author" : [" MD Lutfar Rahman "], "item_description" : "With the continuous development of urban construction, the elevator in today's society has a wide range of applications. Elevator in the building as a complex operation of the vertical transport has been inextricably linked with people's daily life. Nowadays, every developing and developed country are using elevator to rise-in the high stored building. In this book, I therefore wanted to give focus on using programmable logic controller to control the elevator, as PLCs make the easy operation to control complex circuit. Even though the design was limited to four levels, some suggestions are given later as to how to extend the elevator system to more than four levels. The design was compromised of Control Request, Selection of PLC hardware, Hardware Design, Software design and Monitoring and Debug. Ladder logic program is used for four floors control system and I have been discussing details about it on Appendix section. The SIEMENS S7-200 Programmable Logic Controller EM226 with 24 inputs and 16 outputs has been used. I think, the use of PLCs in elevator control system makes things easier for the design and maintenance engineer. This is a great advantage in Automation Industry.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/3/65/962/215/365962215X_b.jpg", "price_data" : { "retail_price" : "31.21", "online_price" : "31.21", "our_price" : "31.21", "club_price" : "31.21", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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