What is the primary function of a governor in an elevator system?

The primary function of a governor in an elevator system is to monitor elevator speed. The governor plays a crucial safety role by detecting if the elevator is traveling too fast. If the elevator exceeds a predetermined speed, the governor activates safety mechanisms, such as the safety brake, to stop the elevator and prevent accidents, thereby ensuring passenger safety.

While other components are necessary for an elevator's overall function, such as emergency power systems that provide backup energy or door mechanisms that control hoistway access, the governor's specific responsibility revolves around the speed regulation and safety of the elevator operation. It is a vital part of an elevator's safety system, working to prevent free-fall conditions and ensuring the elevator operates within designated speed limits.