Elevator overhead is the vertical space above the highest landing required for the car, car-top equipment, terminal movement and applicable safety clearances. The required dimension varies with car geometry, rated speed, drive arrangement, structural obstructions and the safety requirements governing…
There is no universal elevator pit depth. For early planning, many conventional passenger elevator manufacturer configurations use pit dimensions within a broad range of roughly 1,200 to 2,000 mm, while higher-speed or specialized systems may require more. This range is…
There is no single standard elevator car size for every project. Rated load, maximum available car area, intended use, entrance arrangement, accessibility requirements, and shaft geometry determine the final width and depth. A 630 kg passenger elevator commonly uses a…
Elevator shaft size normally refers to the clear internal width and depth of the hoistway. A usable shaft also needs sufficient pit depth below the lowest landing and headroom above the highest landing. There is no single shaft size for…
Elevator door safety depends on more than a sensor that reopens the doors when a passenger enters the doorway. A complete system combines obstruction detection, mechanical locking, electrical verification and access protection, with each device controlling a different failure mode.…
Center-opening and side-opening elevator doors differ in how their panels move and where those panels stack when the entrance opens. This geometry affects clear opening, panel travel, entrance packaging, door-cycle performance, and compatibility with the available hoistway. Selection should therefore…
Elevator encoder maintenance involves more than cleaning the device or checking its cable. Inaccurate leveling, low-speed vibration, irregular acceleration, or repeated feedback faults can originate from the encoder, but similar symptoms can also come from the coupling, wiring, power supply,…
An elevator encoder improves accuracy by providing the drive and control system with continuous feedback about actual motion. This feedback allows the system to compare commanded movement with measured movement and make corrections during acceleration, travel, deceleration, and final leveling.…
Elevator door failures can originate from mechanical resistance, the door operator, position feedback, entrance-protection devices, or the landing-door interlock. Because several faults can produce the same symptom, a door that keeps reopening does not automatically indicate a faulty light curtain,…
