基于PLC的矿井提升机变频调速控制系统的设计.doc

摘要 矿井提升机是矿山最重要的设备，肩负着矿石、物料、人员等的运输责任。传统的矿井提升机控制系统主要采用继电器一接触器进行控制，这类提升机通常在电动机转子回路中串接附加电阻进行启动和调速。这种控制系统存在可靠性差、操作复杂、故障率高、电能浪费大、效率低等缺点。因此对矿井提升机控制系统进行研究具有现实意义。 本文针对提升机控制系统中存在的上述问题，把可编程序控制器和变频器应用于提升机控制系统上，并在可行性方面进行了较深入的研究。 论文根据矿用提升机的运行特性要求，对变频器和PLC 进行选型，并对系统的软、硬件进行设计，其中包括检测模块、控制模块、保护模块、显示模块和抗干扰模块的设计，最后进行系统集成和调试。 运行表明，采用该控制系统，使提升机工作可靠，使用方便，同时具有动态显示的功能，节能效果明显。 关键词：PLC，矿用提升机，变频调速 Abstract The shaft hoist is the foremost equipment of mines，it is widely used to transport the materials，staff and equipment．The traditional shaft hoist control system is always controlled by the relay-contactor，and adopts the methods of connect series additional resistant in rotor’s winding loop to start and adjust speed．The system has many disadvantages such as bad reliability，complicated operation，high fault rate，large energy-wasting and low efficiency．So，carrying on the research on the shaft hoist control system has realistic meanings，and it is a subject for research by relevant experts and scholars’ both at home and abroad too. To these questions existing in the shaft hoist control system，the paper applied PLC(Programmable Logic Controller)and frequency converter to the system，and have carried on deeper research in feasibility. Paper based on the operation of mining properties hoist requirements，the selection of frequency converter and PLC，and the system software and hardware design. Including the detection module，control module，protect module，display module and anti-jamming module design，the final system integration and debug. The tuning indicates，adopting this control system. the shaft hoist works reliably，easy to use，energy-saving well，and have dynamical shown function． Key Words：PLC(Programmable Logical Controller)，shaft hoist，frequency conversion 目录 摘要 I Abstract II 1 绪论 1 1.1 设计来源 1 1.2 国内外提升机发展状况 1 1.3 设计内容及意义 2 1.3.1 设计内容 2 1.3.2 设计意义 3 2 基于PLC的矿井提升机变频调速系统 4 2.1 PLC简介 4 2.2 变频调速 5 2.2.1 变频调速的基本原理 5 2.2.2 变频器 6 2.2.3 矿井提升机 8 2.2 总体设计 9 3 矿井提升机变频调速系统硬件设计 13 3.1 矿井提升机及电机的选型 13 3.1.1 箕斗的