| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation control system of a belt conveyor group capable of carrying out two kinds of discharge time control without increasing to twice a program amount for an order stopping control of the conveyor group by a ladder sequencer. SOLUTION: A sequencer starts to discharge a belt conveyor K (S1); decides whether or not it is a usual stopping control from a discharge incompletion signal flag having as control data (S2); stop-control the belt conveyor K at the time of activating a discharge timer (S3) at a usual stopping control and at the time of time up point (S4) and thereafter starts a stopping control of the belt conveyor at a lower step (S6). In the case of unusual stop, a second timer of which a time interval is different from that of a discharge timer is activated (S7) and a stopping control of the belt conveyor K is carried out at this time up (S8). Thereby, a stopping control of two kinds of discharge time is obtained.
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