The elevator often stops only when it reaches the limit of the elevator car at the upper and lower stations, and the main board reports faults such as 83, 91, 51, 109, 101, 21, 153.
The main cause of the fault phenomenon and code analysis should be related to the working status of the car roof code reader, the self-learning data of the shaft, the position of the door panel, and the speed change distance of the shaft terminal. During the inspection of the code reader and the relative position of the steel strip on the top of the car, it was found that the distance between the steel strip and the guide rail was not completely parallel and the tension was insufficient. The steel strip bracket and tension bolt were adjusted to make the steel strip completely parallel to the main guide rail (with a deviation of no more than 1mm) and in a taut state. The light port on the steel strip was wiped clean and there was no oil pollution blocking it. The car limit block and guide shoe were checked for displacement and wear.
Drive the elevator to the lower level of the station to ensure that the door area lights are all on. Clear the original self-learning data and perform shaft self-learning. Slow down to the top level and restart the CPU after success. Then, call the elevator to the lower level and perform maintenance to the bottom level to ensure that the door area lights are all on. Perform deceleration self-learning and finally return to the bottom level successfully (before performing self-learning, check whether the speed changing magnetic beans on the steel strip are at the position set according to the rated gradient. After completing self-learning, move the speed changing magnetic beans to a position consistent with the value in the speed changing distance read-only parameter).
The elevator can slow down and stop normally when running from the upper and lower stations (if running to the end station and crossing the level, the speed changing magnetic bean will move towards the middle of the shaft). After readjusting the level (the level must be adjusted after each deceleration self-learning), normal operation has been restored and the above faults have not occurred again.
