| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of part items, reduce the manufacturing cost, and simplify the work. SOLUTION: A receiver 72 and a light receiving unit 60 detecting an obstacle are provided on a receiver control board 11. Both the output signal from the receiver 72 and the output signal from the light receiving unit 60 can be identified by a controller 12. Common relays 67, 68, 69 are switched and controlled by the controller 12 based on both signals. The number of part items can be reduced, the manufacturing cost is reduced, and the execution work can be simplified. |
