| 摘要 |
PROBLEM TO BE SOLVED: To provide a car lock abnormality detecting method of an elevator capable of early and surely detecting car lock abnormality, without requiring a special device.SOLUTION: When a car is put in a no-load state based on a detecting signal of a load detecting means, the car is lifted in advance by a specific distance, and a torque command value at this time or an electric current command value or an electric current feedback value fed back to a control deice from an electric motor or a torque feedback value converted from the electric current feedback value, are stored in a storage part as a determining value, and the lock abnormality of the car is detected by comparing a present torque command value in the no-load state or a present electric current command value or a present electric current feedback value or a present torque feedback value converted from the electric current feedback value with the determining value. |
