If you have ever wondered how a lift knows exactly when to stop at each floor, the answer is usually a limit switch.
A limit switch acts as a sensor that communicates with the lift's control system. When the cabin reaches a designated position, the switch sends a signal to the PLC or relay controller, which then stops the motor.
There are two common configurations:
✔ Normally Open (NO)
✔ Normally Closed (NC)
Both methods are widely used throughout industrial automation.
In recent years, magnetic strip positioning systems have also appeared in the lift industry. These systems use magnetic sensors to detect floor positions without physical contact.
The main benefit is quieter operation because there is no mechanical clicking sound.
However, mechanical limit switches continue to be widely used because they offer:
Proven reliability
Easy installation
Easy replacement
Low maintenance cost
Decades of successful field applications
At Beacon Industries, we currently use adjustable Chint YBLX-ME/8101 mechanical limit switches on many lift products because they provide dependable performance and have been tested in real-world applications for many years.
Technology continues to evolve, but reliability remains one of the most important considerations in lift design.
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