FONCTIONS DE SÉCURITÉ BASÉES SUR DES SECTIONS POUR DES APPLICATIONS DE CHARIOT INDÉPENDANTES

摘要

An independent cart system with safety functions that prevent unintended motion independently within different sections of the track while permitting motion along other sections of the track is disclosed. A safety controller receives one or more input signals corresponding to operating conditions along the track. A safety program executing in the safety controller monitors the state of the input signals to determine whether a safety function is to be executed. When a safety program is executed, the safety controller transmits an output signal to one or more segment controllers present in one section along the track. Each segment controller is responsible for regulating current flow to the coils mounted to the corresponding track segment In response to the signal from the safety controller, each segment controller in the section controls the power output to the coils along that section of track to achieve the safe operation desired in that segment.