基于Modbus协议的电动机保护器研究

在分析传统的电动机保护器不足的基础上,提出了一种新型的基于Modbus协议的综合保护装置方案。该装置综合了故障保护、故障报警、故障记录、液晶显示、通信等功能,并采用了协议简单、实施容易、性价比高、被煤矿设备广泛应用的通用工业标准Modbus技术,将电动机保护器连接在Modbus现场总线上,使设备与上位机监控系统进行通信,实现了电动机运行全过程的在线监测和远程控制,保证电动机的正常运行。

Research on Motor Protector Based on Modbus Protocol

First analyzes the disadvantages of traditional motor protector,the new comprehensive protection device based on Modbus protocol is proposed.This device includes the function of fault protection,fault alarming and record,LCD display and communication.And it uses simple protocol,easily operation and low cost.The general industrial standard-Modbus technology is being widely used by coal mine equipment.The motor protector is linked to Modbus bus,which communicates between equipment and upper monitor system.This realizes on-line monitoring and long-distance control during the whole process of motor operation.It can ensure motor's normal operation.