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Corporate siteTerms & Definitions
This is a handy guide to help you make sense of all the common technical terms and acronyms concerning elevators, escalators, and automatic building doors. Click on a word or phrase to see the definition.
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An arrangement of suspension ropes in which the car speed and rope speed are equal.
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An arrangement of suspension ropes in which the car speed is one half the rope speed.
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Electrical power supply that provides 3-phase alternating voltage.
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A device or system that controls access to an elevator or building.
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The door on the main entrance side. See also C-door.
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A system that allows car doors to start opening before the car is fully stopped on the landing. Doors start opening when the elevator car is in the door zone and the speed has decreased below the limit allowed by the safety code.
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A series of automatic doors for elevators, based on interchangeable components. Suitable for use in most elevator applications.
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Noise transmitted through the air. In elevators usually generated by the machine, ropes, control panel, doors, guide shoes and other vibrating components.
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A bell used to call attention and assistance. Operated by a pushbutton inside the car. May be located in the elevator shaft, on a suitable landing, or on the car roof.