With a paternoster system or vertically rotating rack, a vertical carousel takes all the storage locations to the operator station. The stored goods move along with the entire storage rack. This is why modern small parts warehousing systems are often based on the vertical lift module system. In this system, each tray can be moved individually. Speeds are increased and the height of goods storage is flexible.
Our free whitepaper contains more information about rotating racks and vertical lift modules.