电动机顺序启动停止控制课程及设计任务书.docxVIP

课程设计任务书电动机顺序启动/停止控制一、控制要求1．NFB：ON，停车指示灯PL4亮，按PB4无作用，PBl、PB2操作顺序不受限制。2．按PBl时，M1电动机正转[MCl、PLl动作]，PL4熄灭。此时按PB2无作用，按PB3时则Ml电动机停止运转，PL4亮。3．按PB2时，M1电动机逆转[MC2、PL2动作]，PL4熄灭。此时按PB 1无作用，按PB3时则M1电动机停止运转，PL4亮。4．M1电动机正转或逆转时，再按PB4后，M2电动机才会运转[MC3、PL3动作]， 此时按PB3无作用。5．此时按PB5，M2电动机停止运转。6．M2电动机停止运转时按PB3，M1电动机才会停止运转，PL4亮。7．主电路与控制电路如图所示。8．Ml电动机正转或逆转时，TH—RY l动作，M1电动机停止，响，PL4亮。此时按PB4，M2电动机无法启动。9．M1、M2电动机均运转时。若TH—RY2动作，M2停止运转Bz响。按PB3则M1电动机停止运转，PL4亮。若TH—RYl动作，则M1、M2全部停止运转，BZ r1向，PL4亮。10．热继电器全部复位后，BZ停响，恢复正常操作状态。11．PL1、PL2、PL3、PL4作为运转及停止指示，不能以PLc输出点直接控制。12．MCl与MC2在PLC外部接线时，要做连锁控制。二、设计任务学生根据控制要求，明确设计任务，拟定设计方案与进度计划，运用所学的理论知识，进行电动机顺序启动/停止运行原理设计、硬件系统设计、软件系统设计、创新设计，提高理论知识工程应用能力、系统调试能力、分析问题与解决问题的能力。主要内容包括：1. 设计出硬件系统的结构图、接线图、时序图等；2. 系统有启动、停止功能；3. 运用功能指令进行PLC控制程序设计，并有主程序、子程序和中断程序；4. 程序结构与控制功能自行创新设计；5. 进行系统调试，实现电动机顺序启动/停止的控制要求。三、设计报告课程设计报告要做到层次清晰，论述清楚，图表正确，书写工整；详见“课程设计报告写作要求”。目录摘要···············································································1第一章 引言··································································2第二章 系统总体方案设计···············································32.1 系统硬件配置及组成原理图···································32.2 系统变量定义及分配···········································32.3 系统接线图设计················································7第三章 控制系统及其程序设计········································83.1 控制电路设计··················································83.2 PLC控制系统···················································93.3 控制程序设计··················································9第四章 上位监控系统设计·············································10第五章 系统调试及结果分析··········································115.1 系统调试情况·················································115.2 在调试中出现的问题·········································11第六章 结束语····························································12参考文献······································································13摘 要PLC 在三相异步电机控制中的应用，与传统的继电器控制相比，具有控制速度快、可靠性高、灵活性强、功能完善等优点。长期以来，PLC 始终处于工业自动化控制领域的主战场，为各种各样的自动化控制设备提供了非常可靠的控制应用。它能够为自动化控制应用提供安全可