A: Problem: If the elevator has the blind layer in hoistway (non-stop floor), the distance between two adjacent magnet vanes is not larger than 9m (after hoistway autotuning succeeds, check D parameters setting inquiry-U2 hoistway information-Longest floor distance through the controller). If the distance is larger than 9m, wrong leveling or overtravel may occur easily when the elevator runs fast.
Solution: 1. If the distance between two adjacent floors is larger than 9m, add the maget vane in the middle, redo hoistway height autotuning and set the added floor to blind layer.
2. Set F0.21. The parameter is used to change EC160 direct stop at the leveling into creepage speed at the leveling (to avoid pulse error, wrong leveling or overtravel due to long floor distance).  
F0.21=50, when the elevator is 50mm from the leveling stop position, it will decelerate to 50mm/s and runs to stop at the constant speed;
F0.21=100, when the elevator is 100mm from the leveling stop position, it will decelerate to 50mm/s and runs to stop at the constant speed;
F0.21=150, when the elevator is 150mm from the leveling stop position, it will decelerate to 50mm/s and runs to stop at the constant speed;
F0.21=200, when the elevator is 200mm from the leveling stop position, it will decelerate to 50mm/s and runs to stop at the constant speed;
According to the actual conditions, set and save the parameter, do not power on until the controller has no display after power off, and then the function can be enabled.