I dont recall getting any beeps from the drive, but i will check that out. the building has 3 cars and is empty, i only service it once every 3 months, the tach was my first thought, but wanted to ask the Kone guys just to be sure. What is the Resolver, and where is it located? i noticed on the drive cabinet it has the resolver angle written down 53 degrees. i looked at the sheave in the hoist way, and only saw one tach/encoder on the sheave. thanks for the help, i may go there next week to check it out just for the fun of it. ha ha i googled resolver, and found a good article on wikepedia.