| 摘要 |
The invention relates to an unlocking device (1), comprising an actuator (2), by means of which a safety cover (30) of a maintenance opening (40) can be released for opening. In addition, the unlocking device (1) has a safety circuit (5), by means of which the actuator (2) can be activated. The invention is characterized in that the safety circuit (5) comprises at least a first switching contact (6) and a second switching contact (7), which is arranged in series, wherein the actuator (2) can be connected to an energy source (V) by means of the safety circuit (5) when the first and the second switching contacts (6, 7) are in the closed state and the first switching contact can be switched by means of a control unit. The invention relates to an elevator apparatus (10) having said unlocking device (1) and a method for actuating the unlocking device (1). |
