| 摘要 |
<p>PROBLEM TO BE SOLVED: To overcome the problem such that the electromagnetic brake of a motor is released regardless of the motor being in a free state, if a trouble occurs in the motor drive system, as a releasing operating appliance for the electromagnetic brake of the motor and a motor driving operating appliance are independent, and that a final operating appliance for the motor shaft drops by its own weight, when the final operating appliance for the motor shaft acts in the direction of gravity. SOLUTION: This is a device which releases the motor brake by disconnecting a power source for releasing the electromagnetic brake of the motor, by the logical product of a contact which represents that the motor is driven, and a contact which represents that motor drive is permitted.</p> |
