This business includes a lot of technical terms and adding to that acronyms. When designing and servicing it is also important that talk the same language, therefore we need to define som words in detial. We have tried to gather some of the definiitions that we use and tricky words.

Please click on the word/phrase that you would like an description of and the answer will fold out.

  • 1:1 roping
    An arrangement of suspension ropes in which the car speed and rope speed are equal.
  • 2:1 roping
    An arrangement of suspension ropes in which the car speed is one half the rope speed.
  • 3-phase power supply
    Electrical power supply that provides 3-phase alternating voltage.
  • access control
    A device or system that controls access to an elevator or building.
  • A-door
    The door on the main entrance side. See also C-door.
  • advance door opening
    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.
  • Advanced Modular Door
    A series of automatic doors for elevators, based on interchangeable components. Suitable for use in most elevator applications.
  • airborne noise
    Noise transmitted through the air. In elevators usually generated by the machine, ropes, control panel, doors, guide shoes and other vibrating components.
  • alarm bell
    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.
  • alarm button
    A button for activating the alarm bell. Also activates voice connection if remote monitoring is used. Located in the car, with additional buttons on the car roof and underneath the car.
  • alarm delay time
    The time the alarm button must be pressed until the signal is registered.
  • alarm signal
    A signal generated by pushing the alarm button.
  • announcement floor
    A floor where the elevator announcer operates.
  • anti drum element
    A dampening element for reducing noise. Used for instance in car enclosures, door panels or control cabinets.
  • ascending car overspeed protection
    A safety system for stopping the uncontrolled movement of the ascending car.
  • asynchronous motor
    An electric motor where the rotating speed is not exactly fixed to the frequency of the supplied current. The difference between the frequency and rotor speed is called slip. The slip generates the motor torque.
  • automatic car door
    Automatically opening and closing car door.
  • automatic door
    Automatically opening and closing door.
  • available car area
    Area of the car measured at a height of 1 m above floor level, disregarding handrails, which is available for passengers or goods during operation of the lift. Any available area in the entrance, when the doors are closed, shall also be taken into account.
  • balanced load
    A situation when there is a weight of 30-50 % of the rated load (depending on the dimensioning principle) in the elevator car and the counterweight and car weights are equal.
  • balancing ratio
    The share (in per cent) of the elevator's rated load with which the elevator car and the counterweight are in balance.
  • balancing weight
    Mass in counterweight which saves energy by balancing all or part of the mass of the car, car sling and the rated load.
  • balustrade
    A safety barrier on the car roof that prevents from falling to the elevator shaft.
  • base duty door
    A specific range of doors intended for up to 200 000 cycles/year. See also mid duty door and high duty door.
  • battery drive tool
    Optional device which allows to drive the car with balanced load to the nearest floor.
  • bed plate
    A steel or cast-iron platform on which a machine is placed.
  • bi-stable switch
    A device that is capable of assuming either one or two stable states. It remains in one of the states until a trigger is applied. It then flips to the other stable state and remains there until another trigger is applied. See also mono-stable switch.
  • blocking device
    A mechanical safety device to block the car during installation and maintenance.
  • blocking pin
    A steel rod in e.g. the blocking device which, when slid into the hole in the blocking plate, blocks the car.
  • blocking plate
    A steel plate with holes in the blocking device. The blocking pin is slid into the holes.
  • bottom clearance
    The clear vertical distance from the pit floor to the lowest structural or mechanical part, equipment or device installed beneath the elevator car platform, except guide shoes or rollers, safety gear assemblies and platform aprons or guards, when the car rests on its fully compressed buffers. See also safety space.
  • bottom floor
    The lowest floor in a building.
  • bottom landing
    The lowest landing in a building that elevator serves.
  • brake
    An electro-mechanical device used to prevent the elevator from moving when the car is at rest and no power is applied to the hoist machine. On some types of control it also brings the car to a stop when power is removed from the hoist machine.
  • braking force
    The vertical force which stops the car as a result of safety gear operation. See also gripping force.
  • buffer plate
    A plate under the car sling where the buffer hits.
  • building settlement
    Lowering of the building as a result of sinking to the ground or shrinkage of the concrete.
  • building supervision
    Personnel and equipment for supervising technical systems in a building (climatisation, heating, elevators, access control etc.).
  • building tolerances
    Defines the tolerances for the nominal dimensions of the elevator shaft, pit, machine room, raw openings etc.
  • built-in features
    Features that are included in the basic product.
  • bypass load function
    A feature that makes the elevator car to bypass the registered landing calls when the car is recognised to be loaded over a certain limit. Usually the limit is 60...80 % of the rated load.
  • call centre
    A place where alarms and emergency calls are received. People and computers handle the information.
  • CAN network
    Controller Area Network. Bus systems which interconnect intelligent automation equipment in a peer-to-peer network. Notable application are the bus systems used in motor vehicles and in synchronising electrical drives.
  • car area
    The car floor area inclusive door sill area depending on rated load / number of passengers as specified by the safety code.
  • car buffer
    A device designed to stop a descending car beyond its normal limit of travel by storing or by absorbing and dissipating the kinetic energy of the car.
  • car door lock
    A device having two related and interdependent functions: (1) to prevent (electrically) the operation of the hoist machine unless the car door is locked in the closed position, (2) to prevent (mechanically) the opening of a car door from the car side unless the elevator car is in the door zone and is either stopped or being stopped.
  • car emergency lighting
    A battery powered light in the elevator car to serve as emergency light during power failure.
  • car guide rail
    Guide rails used to direct the travel of an elevator car in an elevator shaft.
  • car interior
    All visible elements inside the elevator car.
  • car light
    The car interior lighting.
  • car light supervision
    A function which prevents the use of an elevator when the car light voltage supply fails.
  • car load
    The actual load inside the elevator car (passengers and goods). See also rated load.
  • car operating panel
    The user interface for passengers inside the elevator car. Includes car call buttons, alarm button, door open button etc.
  • car overload indication
    A set of devices to detect and inform passengers of an overload in the elevator car. Triggers the car overload indicator.
  • car safety gear
    A mechanical device usually attached to the car sling, and designed to stop the elevator car in the event the car exceeds the allowed speed.
  • car shell
    The car structure excluding the separate (non-integrated) interior elements.
  • car shell depth
    The internal front-to-back dimension of the car shell without decorative elements.
  • car shell height
    The height measured from the unfinished floor to the lowest edge of the roof.
  • car shell width
    The internal side-to-side dimension of the car shell without decorative elements.
  • car sill
    The lower horizontal member of an elevator car entrance.
  • car sling
    The supporting frame of the elevator car, to which the guide shoes, safety gear and hoisting ropes or hydraulic cylinder is attached.
  • controller
    A device, or group of devices, which serves to control, in a predetermined manner, the apparatus to which it is connected. An elevator controller consists of drive and control functions.
  • core elevator
    The core elevator contains the pre-engineered basic components of the elevator: hoisting system, control function, drive system, car superstructure, core door system and passenger safety equipment. Accessories and decorative elements (including signalisation) are not specified.
  • core elevator platform
    A range of pre-engineered core elevators that make up the product family.
  • counterweight
    A component which ensures traction between the traction sheave and the suspension ropes and which comprises a set of weights to balance the weight of the car and a proportion of the load in the car often taken as 50 % of the rated load.
  • counterweight area
    The travelling area of the counterweight in the elevator pit, isolated by a counterweight screen.
  • drive mode
    A predefined way of operation in which the elevator runs in a certain situation. Modes include for example normal drive, inspection drive and setup drive.
  • drive system
    In rope elevators, the technical solution to provide energy to the hoisting motor and regulate its speed. In hydraulic elevators it controls the pump and the valves.
  • dual entrance car
    An elevator car with two entrances.
  • earthquake protection
    Optional structural and functional properties to protect the passengers and the elevator against damages caused by an earthquake.
  • elevator car
    A part of the elevator which carries the passengers and/or other loads.
  • elevator control system
    The devices and functional principles for executing the calls and commands given by the passengers.
  • elevator group
    An elevator group consists of two or more elevators which are sharing the same landing call buttons (and running under the same group controller). See also elevator bank.
  • elevator shaft
    The space in which the car and the counterweight, if there is one, travels; this space is usually bounded by the bottom of the pit, the walls and the ceiling of the shaft.
  • elevator speed
    The momentary speed of the elevator car in the elevator shaft. Not the same as rated speed.
  • emergency alarm
    An emergency system installed on all cars, which comprises of a bell, a pushbutton in the car and an uninterruptible source of power, usually a battery.
  • fire fighting elevator
    An option where one nominated elevator is allowed to be removed from normal group service for firemen's use.
  • frame type door
    A landing door assembly that does not cover the whole width of the elevator shaft. See also narrow frame type door and front type door.
  • front type door
    A landing door assembly that covers the whole width of the elevator shaft raw opening.
  • goods elevator
    An elevator equipped to carry goods, forklift trucks etc.
  • goods passenger elevator
    An elevator mainly intended for the transport of goods, which are generally accompanied by persons.
  • guide rail
    Steel sections with smooth guiding surfaces. The section profile is usually "T" shaped (machined, cold drawn or roll molded). Guide rails are installed in an elevator shaft to guide and direct the travel of an elevator car and its counterweight.
  • handrail
    A hand hold support in an elevator car.
  • headroom
    Part of the elevator shaft between the topmost finished floor level and the ceiling of the shaft.
  • hoisting function
    The equipment required to move the elevator car and counterweight. A defined combination of equipment required for a range of loads, rated speeds, acceleration and travel heights.
  • JumpLift®
    A temporary elevator system incorporating a movable machine room. Developed to provide a fully operational elevator service during the construction period of a building. The machine room fits on to the same guide rails as the elevator car and is pinned to the building fabric by retractable needles. As the building grows in height, so the guide rail system is lengthened and the movable machine room elevatored upwards to serve the additional new floors.
  • KONE EcoDisc®
    A KONE axial synchronous motor design with permanent magnets in rotor.
  • landing
    The floor area in front of the elevator entrance.
  • landing door
    A door in the opening of an elevator shaft. Provides safe access to the elevator car.
  • landing entrance
    An assembly that includes the landing doors and any architectural finishes associated with the entrance to the elevator shaft.
  • machine room
    A room where the elevator machine and some electrification and control system components are located. Usually located above the elevator shaft.
  • main contactor
    A contactor which switches the power to the hoisting motor if 1) there is a need to run the elevator car and 2) the electric safety chain is complete (closed).
  • main entrance floor
    The floor providing the main access to a building.
  • main power supply
    The devices that provide power to the elevator. Also known as mains.
  • maintenance access panel
    A part of the elevator control system, including the user-interface intended for serviceman and switches, fuses and brake release lever.
  • mid duty
    A specified range of use, refers to the intermediate performance category. See also low duty, high duty.
  • nudging
    A system used with automatic door operation which will give a warning signal and close the doors at a reduced speed and torque. Nudging is activated if the door remains open longer than a predetermined time.
  • out of service switch
    A key operated switch which is used to take the elevator out of normal use.
  • overspeed governor
    A device which, when the elevator attains a predeterminated speed, causes the elevator to stop, and if necessary causes the safety gear to be applied.
  • parking
    A feature for a single elevator or an elevator group. With this feature, an elevator receives a signal to always return to a pre-selected landing after all the car or landing calls have been completed.
  • passenger comfort
    A wide set of features and usability issues that have an influence on the passengers' convenience or inconvenience when using the elevator. For example: decoration, signalisation, entering or exiting, waiting times, ride comfort and so on.
  • passenger elevator
    An elevator primarily used to carry passengers.
  • pit
    A portion of the elevator shaft extending from the sill level of the lowest landing to the elevator shaft floor.
  • plumbing
    A method for: a) checking the elevator shaft to ensure that it is constructed according to the requirements and b) determining the correct position of the components.
  • power factor
    Power factor defines the ratio between true power and apparent power. The power factor of a circuit is calculated based on a formula: pf = P / S, (kW / kVA).
  • rated load
    The load for which the equipment has been built. See also car load.
  • remote alarm
    An emergency alarm system working over a distance.
  • ride comfort
    Ride comfort of an elevator is defined in terms of noise level, vertical vibration, lateral quaking, acceleration / deceleration rate, and jerk.
  • safety gear
    A mechanical safety device attached to the car frame, and in some circumstances to the counterweight frame also. The device acts to stop and hold an overspeeding car or counterweight through the use of clamping jaws closing around the guide rails. The device is activated by the speed governor.
  • shaft panel
    A steel plate fixed on the shaft wall below the landing door sill and above the landing door to reduce the distance between the car door sill and shaft wall.
  • skirting
    Decorative and protective element at the bottom of the car wall.
  • suspended load
    The load that includes the weights of raw car, car interior, car door(s), rated load and car sling with all accessories. The weight does not include suspension ropes, compensation ropes or chains, rope compensation device, travelling cable or counterweight.
  • suspension rope
    The ropes suspending the elevator car and counterweight. Not the same as hoisting rope.
  • synchronisation drive
    An elevator drive mode in which the elevator drives downwards until it reaches a deceleration or synchronisation switch.
  • technical schedule
    List of data that defines elevator platforms in DL-documents.
  • technology platform
    A predefined set of core components that forms the core elevator.
  • terminal floor
    The top or bottom landing served by an elevator car.
  • through-type car
    An elevator car with two or more entrances.
  • through-type elevator
    An elevator with entrances on two opposite sides of the elevator shaft.
  • traction test
    A safety test to ensure that there is correct amount of friction between the suspension ropes and the traction sheave.
  • triplex
    Three elevators in a group.
  • voice link
    A system that provides two-way voice communication between the elevator and KONE service center.