饮料罐装生产流水线1

饮料罐装生产流水线的PLC控制

摘要

随着计算机和网络通讯技术的发展，企业对生产过程的自动控制和信息通讯提出了更高的要求。饮料生产线比较复杂，生产环节也很多。其中饮料的灌装就是饮料生产线上重要的生产环节。

控制系统主要由一台PLC、交流异步电机、液罐、多个灌装状态检测传感器、故障报警蜂鸣器、产量统计显示器等组成。其中电机用来控制运送饮料瓶的传送带部分。

本控制系统有两个特点：一是输入、输出设备比较多；二是所需实现的控制是顺序逻辑控制、模块控制以及计算统计功能。

西门子S7-300系列PLC在模块控制、高速计数和计算方面的功能较强，实现比较方便。因此本系统选用了S7-300型号的PLC进行控制，既满足了控制系统所需的I/O点数，又满足了被控对象的控制要求。

采用PLC控制饮料灌装生产线，实现了饮料生产线的自动化、智能化。对劳动生产率的提高，饮料质量和产量的提高具有深远的意义。

关键词 S7-300可编程序控制器（PLC）/自动化/智能化

Beverage cans production line of the PLC control

Abstract

With the computer and network communication technology, business-to-production process automation and information and communication put forward higher requirements. Beverage production line more complex production processes are also numerous. One drink is a beverage filling production line's most important production areas.

Control system mainly by a single PLC, AC asynchronous motor, tank, multiple filling state detection sensor, fault alarm buzzer, the output statistics displays so on. One motor is used to control the delivery of beverage bottles conveyor belt parts.

The control system has two characteristics: First, input and output devices are more; second is required in order to achieve control is logic control, module control, and computing statistical functions.

Siemens S7-300 series PLC in the module control, high-speed counting and computing functions of a stronger and achieve more convenient. Therefore, this system adopts the S7-300 type of PLC control ,not only the control system to meet the required I / O points, but also to meet the control requirements of the controlled object.

Use of PLC control beverage filling production line, to achieve the soft drink production line automation and intelligence. On labor productivity gains, improve beverage quality and yield far-reaching significance.

KEY WORDS S7-300 PLC ，Automation ，Intelligence

目录

摘要.............................................................................................................................. I Abstract.............................................................................................................................II 前言.. (1)

1.绪论 (2)

1.1饮料灌装生产流水线的概述 (2)

1.1.1生产流水线的概念 (2)

1.1.2生产流水线的形式及特点 (2)

1.2饮料灌装生产流水线模型 (2)

1.3 PLC基础 (3)

1.3.1可编程控制器的产生和定义 (3)

1.3.2可编程控制器的特点 (4)

1.3.3 设计PLC控制时，应遵循以下基本原则 (4)

2.饮料灌装生产流水线的PLC控制要求和内容及硬件设计 (5)

2.1 控制任务 (5)

2.2 控制方案设计原则 (6)

2.2.1 确定系统控制任务与设计要求 (6)

2.2.2 制定电气控制方案 (6)

2.2.3 确定控制系统的输入输出信号 (7)

2.2.4 PLC选型与硬件配置 (7)

2.2.5 I/O分配 (8)

2.2.6 控制程序设计 (8)

3.S7-300硬件介绍 (8)

3.1 S7-300硬件模块 (8)

3.1.1 CPU (8)