Positioning control device.

摘要

A positioning control device wherein an abnormality in a position detector is judged only by use of a position signal emitted from the position detector for effecting position detection of a movable article without using the data of movement of the movable article to be controlled. For this purpose, a logical circuit for effecting abnormality judging of the position detector is provided in a controller for emitting a position control signal corresponding to the position signal to a control circuit for effecting position control of the movable article. When an abnormal condition occurs in the position detector, the signal aspect of the position signal emitted from the position detector is varied from that during the normal operation.