Working on adjusting out a modded 12 stop. 500fpm 40hp gearless 2:1 roping Westinghouse dc machine Smartrise controller. Retained existing machine. Old controller was Westinghouse SMF3. New cables tensioned properly

2 problems.

1- Vibration in car in middle of hoistway - up or down direction. Starts around 4th floor vibration increases as you approach 6 then smooths out by 8th landing. Have spent hours on phone with Smartrise and magnetek.

2- with full load car overshoots a bit. Drive doesn’t seem like it can control the slowdown. If I lengthen my slowdowns then my customer doesn’t like the increased time for leveling with empty car.


Old system had its issues but vibration wasn’t one of them.
Any help appreciated