What is the purpose of a tachometer in an elevator system?

The purpose of a tachometer in an elevator system is to measure the speed of the elevator cab. In elevator applications, precise speed measurement is crucial for ensuring safe and efficient operation. The tachometer provides real-time data on how fast the elevator is moving, which helps the control system to adjust the operation of the elevator accordingly.

This accurate speed feedback allows for smooth acceleration and deceleration, enhancing passenger comfort and safety. In situations where rapid changes in speed occur, the tachometer can help prevent overspeed conditions, ensuring that the elevator remains within safe operational limits. This makes it a vital component in maintaining the performance and reliability of the elevator system.