From the pictures, I do not see a velocity encoder, or a position encoder. I assume that this is single speed or 2 speed AC setup. I think you will find that most Elevator Companies won't touch this because they have to abide by the A17.1 Elevator Code. Your present Controller looks too simplistic. You have an old analog Reverse Phase apparatus matched with some type of Computer, I see no UL approved Badge anywhere. I too would run from this if asked to work on it.I understand your predicament, if you put a proper Elevator system in, you will have to put in Fire Service, Sprinklers, and other Code mandated systems. You have only two safe choices; walk the Stairs, or Bite the Bullet, and upgrade.
