ABNORMAL STATE ARRESTING GEAR FOR ELEVATOR

PROBLEM TO BE SOLVED: To shorten data processing time and positively grasp such a complicated abnormal phenomenon as generating continuously in a short time by limiting elevator control data, stored at the time of detecting abnormality, to minimum data required to investigate the cause. SOLUTION: First storage means 21 are provided with a storage system that reads and stores the state data of an elevator and secures storage caspacity of storing the constant time portion of data, and the latest data. Abnormality detecting means 22 are provided with a function of monitoring the combination of specific data to detect abnormality, and function of transmitting an abnormality detection signal and data indicating abnormality to data extracting means 23 at the time of detecting abnormality. Upon receiving the abnormality signal, the data extracting means 23 stops the action of the first storage means 21 and discards the oldest data out of abnormality storage data up to the last time stored in second storage means 24. The data extracting means 23 is provided with a function of selecting and transferring necessary data corresponding to the abnormality.