| 摘要 |
Disclosed is a transfer apparatus with a first conveyor, a second crossing conveyor, a lifting unit which can raise one of the conveyors in respect of the other conveyor, and a motor powering the lifting, which slows as the lift reaches a physical limit. Also disclosed is a transfer apparatus with a first conveyor, a second crossing conveyor, a lifting unit which can raise one of the conveyors in respect of the other conveyor, and a motor powering the lifting, which is stopped when an abrupt change of current is detected. Also disclosed is a positioning method of a motor which slows when a physical limit is reached, and stops when an abrupt change of current, or exceeding of a current limit is reached. |
