| 摘要 |
A position control system for an elevator comprises a pluralilty of pulse encoders which generate pulse signals at each time when a cage moves a predetermined distance, a plurality of counters which count up and down the pulse signals from the pulse encoders in correspondence with respective running directions of the cage, difference value detection means to find a difference value between count values of the counters, comparisen means arranged to operate when the difference value has exceeded a predetermined value, and stop means to stop the cage in response to an operation signal of the comparison means. |
