| 摘要 |
PURPOSE:To prevent an operator from making both power sources for a motor and an electromagnetic brake by mistake by providing a detector, which detects a brake cover 13 being removed. CONSTITUTION:At a point of time when a brake cover 13 is removed from a yoke 3, the switch of a detector 16 is released, and the switch is tuned off, so the detector 16 detects the positional relation of the braking force between a movable plate 5 and a friction disc 9 being in inferior condition, and a controller 18 extinguishes an annunciator 17, so it can indicate that the positional relation of the braking force is inferior. Accordingly, an operator can be prevented from making the power sources for both a motor and an electromagnetic brake by mistake, which improves the safety. |
