Breakthrough in Safe and Cost-Effective Elevator Hoistway Control

摘要

The century old elevator hoistway safety control system has had its day. More and more safety related functions are necessary to maintain the level of safety while more features for convenience, maintenance, and pre-maintenance are additionally installed. The contactless, very robust and precise absolute positioning system (APS) in combination with the position supervisor unit (iDiscovery) take over all safety relevant functions in the hoistway and trigger a motor brake via the safety chain or directly using the electric safety gear. Detection of overspeed or unintended car movement as well as pre-opening of doors, leveling and re-leveling with open doors, and retardation control are covered by the iDiscovery. Virtual limit switches, virtual inspection limit switches and virtual shelter spaces are all covered by iDiscovery. APS and iDiscovery in combination significantly reduce the cost and complexity of elevator equipment as well as installation time.