Modern elevators use comprehensive safety systems that kick into gear when the elevator experiences a problem or operates outside of its normal functioning. These safety systems are often referred to as the “elevator safety chain,” a series of electrical and mechanical mechanisms that work together to stop the elevator in the event of a malfunction.
ELEVATE Monitoring explains how the elevator safety chain works to promote the safe and reliable functioning of elevator systems.
What Is the Elevator Safety Chain?
An elevator safety chain is not a physical chain; instead, it is a metaphor for the “chain” of safety mechanisms built into modern elevators. Elevators use both electrical “safety chains” and mechanical safety gears. These systems immediately stop the elevator car and secure it in place when a malfunction occurs, such as:
- Door lock failure
- Electrical malfunctions
- Mis-leveling, or not stopping precisely at the floor level
- Overspeed issues
Elements of the Elevator Safety Chain
A comprehensive elevator safety chain consists of six elements that work together to catch elevator malfunctions and trigger an emergency response. These are as follows:
- Controller: The computer of the elevator system, which receives data from other parts of the safety chain and controls the elevator functions accordingly
- Machine: The motor, traction sheave, and brake, which control the cables attached to the elevator car and counterweight for a smooth ride
- Brakes: Friction brakes that apply equal pressure to the motor shaft to halt the car when power is lost
- Governors: Devices that continuously monitor the elevator’s speed and send a signal to the controller if it exceeds the speed rating
- Safeties: The devices located on the elevator car that grab the hoistway rails when activated
- Buffer: The device that absorbs and dissipates the energy of the elevator as it descends
Understanding this chain of safety mechanisms can help you better understand how elevators work and promote the security of occupants.
How the Elevator Compensation Chain Fits Into the Safety System
You may also see the elevator compensation chain referred to as a “safety chain.” This is another mechanism that promotes the safe operation of the elevator, though it is not part of the electrical or mechanical safety chain described above.
The elevator compensation chain connects the car to the counterweight system, helping to balance the changing weight of the suspension ropes as the elevator ascends or descends. This system is most common in high-rise buildings with elevators, preventing the elevator from becoming unstable during longer trips. It promotes a more consistent load balance and offers noise and vibration reduction.
Enhance Your Elevator Safety With ELEVATE Monitoring
Business owners can take steps beyond the elevator safety chain to promote a reliable experience for visitors and guests. Equipping your elevator with a two-way video monitoring system from ELEVATE Monitoring ensures that occupants have an easy, effective means of seeking help when the rare elevator malfunction occurs.
Contact us today at 877-990-9191 to learn more about our advanced elevator monitoring safety features and request a quote.
