The invention provides a PLC redundancy control network system of a large ladle crane. The system mainly comprises a redundant PLC controller, a first distributed I/O device, a second distributed I/O device, a third distributed I/O device, a fourth distributed I/O device, a fifth distributed I/O device, a first execution mechanism frequency converter control unit, a second execution mechanism frequency converter control unit, a third execution mechanism frequency converter control unit and a fourth execution mechanism frequency converter control unit. And the first data switch, the second data switch, the third data switch and the fourth data switch are respectively connected to a PROFINET network with a ring topology structure. According to the invention, the dual redundancy hot standby control of system redundancy and network transmission medium redundancy is realized, the control precision and system stability of the crane are improved, the failure shutdown of equipment is reduced, and the production efficiency of enterprises is improved.
本发明提供一种大型铸造起重机PLC冗余控制网络系统,主要包括冗余PLC控制器、第一分布式I/O设备、第二分布式I/O设备、第三分布式I/O设备、第四分布式I/O设备、第五分布式I/O设备、第一执行机构变频器控制单元、第二执行机构变频器控制单元、第三执行机构变频器控制单元、第四执行机构变频器控制单元、第一数据交换机、第二数据交换机、第三数据交换机、第四数据交换机,上述设备分别接入环形拓扑结构的PROFINET网络。本发明实现了系统冗余与网络传输介质冗余的双重冗余热备控制,提高起重机的控制精度和系统稳定性,降低设备故障停机,提高企业生产效率。
Large ladle crane PLC redundancy control network system
一种大型铸造起重机PLC冗余控制网络系统
2022-07-08
Patent
Electronic Resource
Chinese
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