Rope slip detection device for an elevator, and the elevator apparatus

摘要

In the elevator apparatus, a pulley is provided in the hoistway. A rope that moves as the car moves is wrapped around the pulley. Further, the pulley is provided with a pulley sensor that generates a signal corresponding to the rotation of the pulley. A rope sensor for measuring the moving speed of the rope is provided in the hoistway. The control panel includes a first speed detecting unit for determining the speed of the car based on information from the pulley sensor, a second speed detecting unit for determining the speed of the car based on information from the rope sensor, A determination unit that detects the presence or absence of slippage between the rope and the pulley is provided based on the information on the speed of the car obtained by each of the second speed detection units.