| 摘要 |
PURPOSE:To eliminate useless power supply due to transmission lag or failure of receiving circuit by detecting attraction of body to the track or dropping of the body to the track and automatically interrupting power supply. CONSTITUTION:Upon dropping of the body onto a body receiving part, i.e., a box beam 10, a limit switch 8 fixed to the bottom face of the rear body 3 of carrier contacts with the box beam 10 to be turned ON. When a levitation magnet 4 is attracted to a rail 11, a limit switch 9 fixed to the vicinity of the levitation magnet 4 while opposing to the rail 11 contacts with the rail 11 to be turned ON. When ON signals R2, R3 are fed to a relay interruption sequence circuit 29, an OFF command signal R1 is fed to an interrupting circuit 26 which thereby interrupts power supply to a load. Consequently, power interruption lag due to failure of transmitting/receiving circuit is eliminated, resulting in elimination of inconvenience or trouble due to intermittent conduction. |
