PLC和变频器在桥式起重机中的应用

Application of PLC and frequency converter in the bridge crane

桥式起重机采用PLC和变频器控制系统具有起动转矩大、调速性能好、控制方便可靠等特点,并对电动机有完善的短路、过载、缺相等保护功能,极大地提高了起重机的可靠性和安全性。

The bridge crane uses the control system of PLC and frequency converter that has advantages of great starting torque,excellent speed-adjustability,convenience and reliablity.And it provides the perfect protective functions of short circuit,overload and lack of phase which greatly improve the reliability and safety of the crane.