文档介绍：摘要
自动扶梯是一种常年运载乘客的电力驱动设备,其运行状态常出现空载,大多数扶梯在空载时仍采用额定速度运行,具有耗能大,机械磨损严重等缺点,因此需要对自动扶梯进行节能运行改造。本设计就是根据自动扶梯节能使用的基本要求,设计一种以微机与变频器相结合控制自动扶梯节能运行的系统。工艺要求在保证舒适安全运行的条件下能够降低自动扶梯的能耗,延长自动扶梯的工作寿命。
自动扶梯控制系统的设计过程中主要包括电动机、热继电器、主电源开关、接触器、变压器、电线及电缆和制动电阻选型的基础上对于变频器驱动、电源控制、制动、故障显示、检修控制、速度检测、安全控制、照明控制等电路的设计。完成电路的设计后再对于主驱动轮传感器、梯级缺失传感器、扶手带测速传感器的安装,最后经过离线调试和在线调试,该系统实现了节能化运行。它实现了自动扶梯的电脑化控制,使自动扶梯更趋于智能化。
关键词:自动扶梯;微机;控制系统
ABSTRACT
Escalator is a perennial passenger electric equipment, its running state often without load, Most of the escalator when the without load is still using the rated speed, High energy consumption, mechanical wear and serious ings. So the escalators need for energy-saving operation transformation. This design is based on the use of energy-efficient escalator basic requirements to design bination puter and inverter control system of the escalator energy-saving operation. Process requirements to ensure fort and safety of operation conditions of the escalator could reduce power consumption and extend the working life of the escalator.
Escalator control system design process includes on the basis of motors, thermal relays, the main power switch, contactors, transformers, wires and cables, and brake resistor selection to inverter drive, power control, braking, fault indication, access control, speed detection, security control, lighting control circuit design. pletion of the circuit design for the main drive wheel sensors, sensor missing rungs, handrail speed sensor installation. Finally, after offline debugging and debugging, the system realizes energy-saving operation. It implements the puterized control, so that the escalator tends to be more intelligent.
Keywords:Escalator; puter; Control System
目录
1、引言 1
2、概述 2
课题背景 2
国内外文献综述 3
设计研究内容 5
3、控制系统工艺 6
控制系统工艺 6
控制系统工作流程 7
4、控制电路设计 9
电动机选型 9
热继电器的选用 9
主电源开关的选用 9
接触器的选用 9
变压器的选用 10
电线及电缆的选用 10
制动电阻选型 10
变频驱动回路 11
电源控制回路 12
制动回路 12
故障显示回路