制动器可靠性试验 PLC 控制系统设计摘要制动器是电梯重要的安全装置。其作用:一、能够使运行中的电梯在切断电源时自动把轿厢制停和电梯停止运行;二、制动器应能保证在 125%的额定载荷情况下,使轿厢保持静止,位置不变。它的安全、可靠是保证电梯安全运行的重要因素之一。因此,对制动器可靠性的测试具有重大意义。PLC 是专为工业控制而设计的控制装置,具有可靠性高,抗干扰能力强;通用性强,控制系统结构简单;功能完善,适应面广;编程简单,容易掌握;控制系统设计、施工、调试及维护工作量少;体积小、重量轻、功耗低、维护方便等特点。本设计的控制系统为制动器可靠性试验系统,是电梯试验的一个子试验系统。采纳上位机+前端控制器两层网络控制结构,上位机采纳工控机,前端控制器采纳可编程控制器。简易可靠并且扩展性好。本文主要描述利用可编程控制器完成该试验系统的执行元器件驱动及试验过程的控制,实现最低吸合电压测试、最高释放电压试验、开启滞后时间试验、可靠性试验等试验项目,并完成其控制系统设计、电气系统设计及编写各试验项目功能程序。关键词:电梯制动器,可靠性,S7-200,PLC 控制系统 注:本设计题目来源于生产实际,项目编号为: Abstract Elevator brake is an important safety device.Its role: 1, to make the elevator run off the power when the system automatically stops and the elevator car to stop running; 2, brakes should be able to guarantee 125% of rated load in the circumstances, so maintain a stationary car, the location is not changed.It's safe and reliable to ensure the safe operation of lifts one of the important factors.Therefore, the reliability of the brake test is of great significance.PLC is designed for the control of industrial control devices, high reliability, strong anti-interference; versatility, the control system is simple; functional, wide adaptation; programming simple and easy to grasp; control system design, construction,commissioning and maintenance work less; small size, light weight, low power consumption and easy maintenance.The design of the control syste...