Elevator Door Lock Monitoring
(Required Code update in 2025)
Liftek is poised to help you with the engineering and installation of a door lock monitor overlay to your existing elevator controller or perform a complete modernization. We understand that this new code update will take place in Chicagoland and throughout Illinois sometime in 2025. Please let us know if you have any questions.
What is elevator door lock monitoring
Elevator door lock monitoring is a safety feature in elevators designed to ensure that the doors are properly closed and locked before the elevator can move. Here's how it generally works:
Safety Mechanism: The primary purpose is to prevent the elevator from moving if the doors are not securely locked. This includes both the car doors (inside the elevator) and the hoistway doors (the doors at each floor that match up with the car doors).
Monitoring System: There are sensors or mechanical switches that detect whether the doors are fully closed and locked. These sensors communicate with the elevator's control system, which will only allow the elevator to operate if all doors are secured.
Operational Check: Before the elevator can start moving, the control system checks the status of these sensors. If any door is not properly locked, the elevator will not move, and an alarm or error message might be triggered.
Safety Standards: This monitoring is required by safety codes and standards like those from ANSI (American National Standards Institute) or ASME (American Society of Mechanical Engineers) in the U.S., ensuring compliance with regulations aimed at preventing accidents like people or objects being caught in doors or falling into the elevator shaft.
Maintenance and Troubleshooting: Regular checks and maintenance are necessary to ensure that the door lock monitoring system functions correctly. If there's an issue, technicians can diagnose whether the problem is with the sensors, the doors themselves, or the control system.
Redundancy: Often, there are multiple layers of safety checks, including both electrical and mechanical interlocks, to provide redundancy in case one system fails.
This system is crucial for both safety and operational efficiency in elevators, ensuring that they only operate under safe conditions.
Shown is a controller overlay for your existing elevator controller.
Works on all types of elevators.