摘要 |
<p>The invention relates to a conveyor unit having drive means for driving an article along the conveyor unit, and having drive control means for controlling a conveyance speed of the drive means. In order provide a conveyor unit, of which the operation is controlled by means that facilitate precise positioning of the articles after a change of conveyance speed of the conveyor unit, a detector (2) is arranged along the conveyor unit for detecting the presence of an article on a given part of the unit and producing an output accordingly. Additionally, a control unit is provided for receiving said output from the detector and comprising means for changing the conveyance speed of the drive means by means of the drive control means. Furthermore, an execution of said change is performed depending on whether a signal is received from an external control unit via a communication network within a predetermined period from the time said output is received from the detector.</p> |