一旦锅炉跳闸，所有伸缩式吹灰器和顺序制动都能够转向。
Reverse of all retractable sootblowers and sequence stop, upon boiler trip.
简单控制是指对电动机进行启动、制动和顺序控制。
Simple control is about start, apply the brake, and order control.
本文介绍了一个控制桥式起重机的变频调速系统，它根据桥吊的特殊性能要求，采用矢量控制方式，具备平滑调速、能量回馈、顺序制动等功能。
According to the special requires of bridge crane, it adopts the vector control theory, has functions of regulating speed smoothly, energy feed back, sequence brake etc.
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