| 摘要 |
PURPOSE:To improve operability of loading in a conveyer system for conveying load such as pulverulent body through a plurality of conveyers by providing respective activation controlling circuits for activating a plurality of the conveyers sequentially from the supply side to the delivery side and vice versa. CONSTITUTION:In running first to third conveyers, when a push button switch PB1 is turned ON in a selection circuit A, contacts r11 of a relay R1 are closed to energize a relay RA1 in a first activation control circuit. When an activating push button switch PBST1 is depressed under such a condition, a relay ST1 is operated to close its contact st12 and energize a relay US1 for activating a first conveyer. Also, by closing contacts ut1 after passage of a set time in a timer relay UT1 is energized a relay IS1 for activating a second conveyer. Further after passage of a set time in a timer relay IT1 is similarly energized a relay DS1 for activating a third conveyer. On the other hand, when a push button switch PB2 is turned ON, the respective conveyers are operated in the sequence reverse to the above mensioned by a second activation controlling circuit (not shown). |
