变频器、PLC在桥式抓斗起重机改造中的应用

Application of frequency converter and PLC in rebuilding of bridge crane

分析了目前抓斗桥式起重机控制系统中存在的问题,提出了采用PLC、变频器控制进行系统改造的设计方案,阐述了系统设计、参数设置、硬件实现的具体设计。

The problems in the start control system of bridge crane axe analyzed and the design method to rebuild the system with frequency converter and PLC controller is presented. The design of system, the parameters setting and hardware realization are also given.