Where did EC go?
This is what he's talking about, Elevator Components, not Elevator Controls.
Seen a few of these but once again it's just a band aide
Ah ok. The over lay i'm talking about you basically bolt to the existing selector and use the existing selector tape(albeit replace the tape and the way it reads) and you are replacing all the existing levelling systems with a electronic equivalent( and wire it to the terminals on the existing selector). It is designed to extend the life of existing controllers, especially when they are ok, yet the selectors are stuffed. Its not a cheap option but it will work for you. What you can do is explain this to the customer and maybe you can do the lifts that will be as is the longest while the first lift you leave as is and do the best you can. Also you could do some sort of deal for the price and then when you dismantle this you could on sell this to another job? Just spit balling here but systems like this work pretty well. The only thing we found was sometimes they lock up and you had to move the lift past the master floor to get the system to reset so its best to wire in a inspection switch to drive the lift from the motorroom.