摘要
介绍LZ-6/700直进式拉丝机的控制过程。利用拉拔过程中金属秒流量相等原理,推导出各台拉拔设备转速、减速比和钢丝截面积的关系。指出对于同一台设备,生产同一种规格的钢丝时,各个电机的转速始终成比例。该系统主要由人机界面、PLC和变频器组成。采用PROFIBUS-DP现场总线,给出系统配置图、控制过程和通讯程序,结合硬件配置说明通讯程序中的地址设置。在PLC程序中建立数据块用于变频器的通讯,对数据块的参数和通讯程序的关系及控制实现的功能进行解释。给出用于PROFIBUS-DP总线通讯时的变频器参数,并对通讯程序涉及的参数给予说明。
To introduce the control process of LZ -6/700 straight line wire drawing machine. Making use of the principle of metal second flow being equal in the course of wire drawing, the relations between main rotation speed and reduction ratio of every set of drawing device and steel wire cross-sectional area are deduced. It is pointed out that the rotation speed （frequency） of each motor is proportional all the time for the same set device to produce the same spec steel wire. The system is mainly made up of human-computer interface, PLC and transducer. To adopt PROFIBUS- DP, the system arrangement plan, control process and communication program are given, combining hardware configuration to explain address settings in communication program. Setting up data block in PLC program to use as communication of transducer, the relation between data block parameters and communication program, control realizing functions are explained. Transducer parameters used for PROFIBUS - DP communication are given, and the parameters relative to communication program are illustrated. Keywords straight line wire drawing machine; wire drawing machine control; PROFIBUS -DP; PLC; transducer; PLC and transducer communication
出处
《金属制品》
2009年第5期34-38,共5页
Metal Products
