| 摘要 |
<p>An actuating switch (5) acts as a contactor in ON position, the drive element (1), i.e. an electric motor moves the shutting part (2), i.e. a window in the door (3) towards the closed position. By releasing the actuating switch, i.e. placing it in the OFF position, a limit switch (6) is made non-active and the electric motor automatically moves the part towards the open position. The electric motor does not preform reverse movements of parts whilst he limit switch remains active. A relay (7) directly controls opening and closing directions. Switching logic is provided by a microcomputer.</p> |
