Because of the severe working condition and frequent operations of crane, the design scheme of CC-Link bus-based variable frequency speed control system for crane is proposed in the paper to improve the reliability and accuracy of the electric control. With programmable controller of Mitsubishi Q series as the core, and in combination with Willen MT600 touch screen and Mitsubishi FR frequency converter, the variable frequency speed control system for crane is developed. The on-site commissioning test results show that the mentioned variable frequency speed control system can better adapt to the complicated working environment and has a significant application value.%由于起重机工作环境恶劣、作业频繁,为了提升其电气控制的可靠性和准确性,提出了一种基于CC - Link总线的起重机变频调速系统设计方案.以三菱Q系列可编程控制器为核心,结合威纶MT600系列触摸屏和三菱FR变频器,开发了起重机电机变频器调速控制系统.作业现场试运行试验结果表明该变频调速系统能够较好地适应起重机复杂的工作环境,具有重要的应用价值.
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