起重机大、小车行走驱动系统设计(1)

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1、起重机大、小车行走驱动系统设计河南机电高等专科学校课程设计报告书课程名称：《交流调速系统与变频器应用》课题名称：起重机大、小车行走驱动系统设计系部名称：自动控制系专业班级：自121姓名：李少光学号：1214151272015年01月03日15起重机大、小车行走驱动系统设计目录第1章总括···············································11.1引言··························································11.2方

2、案的选择····················································11.3设计目的、要求及设备··········································2第2章控制系统电气原理····································32.1硬件电路设计··················································32.1.1系统连接图····························

3、·····················32.2系统原理图····················································42.3变频器的参数及PLC的I/O地址分配·····························5第3章PLC软件设计及程序调试·····························615起重机大、小车行走驱动系统设计3.1USS协议指令···················································63

4、.1.1USS_INIT指令··············································63.1.2USS_CTRL指令·············································63.2PLC程序设计··················································73.3程序的调试····················································7第4章力控组态的开发与调试··

5、···································74.1力控组态的开发···············································74.2力控组态的调试···············································8第5章心得体会··················································9附录1··············································

6、···············1015起重机大、小车行走驱动系统设计第1章总括1.1引言起重机的电机驱动主要有起升机构、大车、小车行走机构,电机主要采用绕线式异步电动机及鼠笼式异步电动机。起动时冲击电流大,设备冲击严重,噪声大,影响设备使用寿命及定位精度。近年来随着变频器技术发展,以其优越的起制动控制特性,在各种行业得到了广泛应用。在起重机中起升机构采用变频器驱动后,可用鼠笼式异步电动机取代绕线式异步电动机。由于变频器驱动时,电机起动冲击电流小,转速变化非常平稳,起升、行走定位也较准确,提高了生产效率。1.2方案

7、的选择根据起重机驱动的特性和技术有要求，采用带测速反馈接口的MM440系列变频器作为起升机构的电机驱动，MM440作为大、小车行走机构的电机驱动，MM440是一种通用型矢量控制变频器，功能强，价格低，能够充分满足行走机构的要求。起重机大车运行方向有前后，小车运行方向有左右要求，根据运行需要分为1-3档，采用一台三相异步电动机。起重机整个电气系统有S7-200系列PLC控制，变频器通过开关量端子接受PLC控制信号。1.3设计目的、要求及设备设计目的：设计一个起重机大车和小车变频调速控制系统：大车两台电机，小车一台电

8、机。电机速度选择均有高中低三档。控制大车两台电机的前后行驶，前后极限位置设有极限开关。控制小车电机的左右行驶，左右极限位置设有极限开关。设计要求：1、采用西门子S7-200PLC和MM440变频器。2、大车和小车高中低三段速度对应电机的供电频率分别为50Hz、40Hz和30Hz。3、要求就地和远程控制，采用力控组态软件进行远程控制。设计所需的设备：1.设计所需的硬件设备主