| 摘要 |
PURPOSE:To set in a short time a limit switch for preventing an overrun by storing both end point values of an operating area in which a safety operation can be executed, and a work point value, also, reading them, and setting automatically the first and the second soft limits. CONSTITUTION:At the time of teaching, a storage part 33 receives a detector 34 signal of an operating shaft 11, and stores it successively as a work point value 25. Also, at the time of installation, the operating shaft 11 is operated manually, an operating area 17 corresponding to a safety operating area of the operating shaft 11 concerned is detected, and both its end point values 18, 19 are stored. As a result, a registering part 35 reads out said values 18, 19, and the maximum movable areas 20, 21 being narrower than said values are set automatically as the first soft limits 23, 24, and registered. Also, in the same way, the second soft limits 31, 32 are set automatically, and registered as a movable area 28. In this way, at each work program, movable area values 29, 30 and the movable area 28 are set and registered, by which a monitor part 36 monitors it, and cuts off a power source to a driving control part through a power cutting-off circuit 38, at the time of its protrusion. |
