Imperial actually recently came out with a replacement machine for the Kone MX machines used on the mono spaces. There is an article in elevator world from earlier this year where a independent company in Florida did a full mod on one and installed the first replacement imperial machine for that application. I am currently trying to get the machine approved in my state.

As for just doing controls we did one 3 car mono space job where we retained the machines and replaced controls, fixtures, and door operators. We used smart rise controls with Magnetk drives. I think this may have been one of the first ones Magnetek did in this application as they were very involved with set up and adjustment.