| 摘要 |
<p>The invention relates to a safety arrangement of an elevator for implementing safety spaces in an elevator shaft. The elevator comprises an elevator control system (2), an elevator motor (25), a power supply circuit (1) of the elevator motor, and at least one mechanical stopping appliance (26, 48) for preventing movement of the elevator car (28) in the elevator shaft (27). There is further a measuring arrangement for monitoring the safety spaces of the elevator comprising sensors (7, 7', 8) that measure the position of the landing door (20) of the elevator, wherein a data transfer channel (19) between the control unit (3) and the switches (7, 7', 8) comprises a resistance (33, 34, 35) fitted in the series circuit in parallel, wherein the resistance (35) fitted in parallel with the switch (7') of the landing door of the bottommost floor differs in its resistance value from the resistances fitted in parallel with all the other switches (7, 7', 8) in order to identify the position of the landing door of the bottommost floor.</p> |
