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针对矿区现有提升机的运行缺陷,提出一种通过变频器和S7-200PLC控制提升机的方案。该方案采用上位机实时监控工作状态,并设置了安全保护措施和故障处理功能,提升机的速度给定采用PLC控制软件生成S形速度曲线实现。系统具有可靠性高,灵活性强,故障率低等优点。
In view of the operation defects of the existing elevator in the mining area, a scheme of controlling the elevator through the frequency converter and the S7-200PLC is proposed. The program uses the host computer real-time monitoring of working conditions, and set the safety protection measures and fault handling functions, hoist speed given PLC control software to generate S-shaped speed curve. The system has the advantages of high reliability, strong flexibility and low failure rate.