protect circuit from overcurrent in output of programmable logic controller

摘要

The present invention in particular, the current conduction path opening and closing means to give to form a current conduction path to the load side by a control signal output from a specific output port of the programmable logic controller and a current conduction path to open and close relates to an output protection device of a programmable logic controller in the case of forming a current conduction path from the means for switching operation by a signal generated when the the current recognition means, and in the current-current recognition means to recognize the transition state of current conduction to the load side is high is determined flows alert to the user provided with the current warning unit, and the current warning part warning operation when the current warning current and the programmable logic controller output section comprises a voltage detecting section for detecting the voltage state corresponding to a current conducting portion protection circuit for a conventional for the current flowing through the load and If there is no call device has the effect of disadvantage that the transistor is damaged, a short circuit when the programmable logic controller output modules of the load and the speed-type fuser overcome the disadvantages that should replace the fuse once the operation when attaching the woods.