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Glossary

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

Please click on the word/phrase that you would like a 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 a lift 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 lift 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 lifts, based on interchangeable components. Suitable for use in most lift applications.
  • airborne noise
    Noise transmitted through the air. In lifts 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 push-button inside the car. May be located in the lift 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 lift 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 lift car and the counterweight and car weights are equal.
  • balancing ratio
    The share (in per cent) of the lift's rated load with which the lift 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 users from falling into 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
    An optional device which drives the car with a 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 for example 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 lift 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 a lift serves.
  • brake
    An electro-mechanical device used to prevent the lift 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, lifts, access control, etc.)
  • building tolerances
    Defines the tolerances for the nominal dimensions of the lift 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 lift car 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. A notable application is 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 lift car is in the door zone and is either stopped or being stopped.
  • car emergency lighting
    A battery powered light in the lift car to serve as an emergency light during power failure.
  • car guide rail
    Guide rails used to direct the travel of a lift car in a lift shaft.
  • car interior
    All visible elements inside the lift car.
  • car light
    The car interior lighting.
  • car light supervision
    A function which prevents the use of a lift when the car light voltage supply fails.
  • car load
    The actual load inside the lift car (passengers and goods). See also rated load.
  • car operating panel
    The user interface for passengers inside the lift car. Includes car call buttons, the alarm button, the door open button, etc.
  • car overload indication
    A set of devices to detect and inform passengers of an overload in the lift car. Triggers the car overload indicator.
  • car safety gear
    A mechanical device usually attached to the car sling and designed to stop the lift 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 a lift car entrance.
  • car sling
    The supporting frame of the lift 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. A lift controller consists of drive and control functions.
  • core lift
    The core lift contains the pre-engineered basic components of the lift: 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 lift platform
    A range of pre-engineered core lifts 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 lift pit, isolated by a counterweight screen.
  • drive mode
    A predefined way of operation in which the lift runs in a certain situation. Modes include for example normal drive, inspection drive and set-up drive.
  • drive system
    In rope lifts, the technical solution to provide energy to the hoisting motor and regulate its speed. In hydraulic lifts it controls the pump and the valves.
  • dual entrance car
    A lift car with two entrances.
  • earthquake protection
    Optional structural and functional properties to protect the passengers and the lift against damages caused by an earthquake.
  • lift car
    A part of the lift which carries the passengers and/or other loads.
  • lift control system
    The devices and functional principles for executing the calls and commands given by the passengers.
  • lift group
    A lift group consists of two or more lifts which are sharing the same landing call buttons (and running under the same group controller). See also lift bank.
  • lift 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.
  • lift speed
    The momentary speed of the lift car in the lift shaft. Not the same as rated speed.
  • emergency alarm
    An emergency system installed on all cars, which comprises of a bell, a push-button in the car and an uninterruptible source of power, usually a battery.
  • firefighting lift
    An option where one nominated lift is allowed to be removed from normal group service for use by firefighters.
  • frame type door
    A landing door assembly that does not cover the whole width of the lift 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 lift shaft raw opening.
  • goods lift
    A lift equipped to carry goods, forklift trucks, etc.
  • goods passenger lift
    A lift 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 moulded). Guide rails are installed in a lift shaft to guide and direct the travel of a lift car and its counterweight.
  • handrail
    A hand-hold support in a lift car.
  • headroom
    Part of the lift shaft between the topmost finished floor level and the ceiling of the shaft.
  • hoisting function
    The equipment required to move the lift car and counterweight. A defined combination of equipment required for a range of loads, rated speeds, acceleration and travel heights.
  • JumpLift®
    A temporary lift system incorporating a movable machine room. Developed to provide a fully operational lift service during the construction period of a building. The machine room fits on to the same guide rails as the lift 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 lifted upwards to serve the additional new floors.
  • KONE EcoDisc®
    A KONE axial synchronous motor design with permanent magnets in the rotor.
  • landing
    The floor area in front of the lift entrance.
  • landing door
    A door in the opening of a lift shaft. Provides safe access to the lift car.
  • landing entrance
    An assembly that includes the landing doors and any architectural finishes associated with the entrance to the lift shaft.
  • machine room
    A room where the lift machine and some electrification and control system components are located. Usually located above the lift shaft.
  • main contactor
    A contactor which switches the power to the hoisting motor if 1) there is a need to run the lift 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 lift. Also known as the mains.
  • maintenance access panel
    A part of the lift control system, including the user-interface intended for serviceman and switches, fuses and the 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 lift out of normal use.
  • overspeed governor
    A device which, when the lift attains a predetermined speed, causes the lift to stop and, if necessary, causes the safety gear to be applied.
  • parking
    A feature for a single lift or a lift group. With this feature, a lift 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 lift. For example: decoration, signalisation, entering or exiting, waiting times, ride comfort and so on.
  • passenger lift
    A lift primarily used to carry passengers.
  • pit
    A portion of the lift shaft extending from the sill level of the lowest landing to the lift shaft floor.
  • plumbing
    A method for: a) checking the lift 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 the 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 a lift 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 the 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 lift car and counterweight. Not the same as hoisting rope.
  • synchronisation drive
    A lift drive mode in which the lift drives downwards until it reaches a deceleration or synchronisation switch.
  • technical schedule
    List of data that defines lift platforms in DL-documents.
  • technology platform
    A predefined set of core components that form the core lift.
  • terminal floor
    The top or bottom landing served by a lift car.
  • through-type car
    A lift car with two or more entrances.
  • through-type lift
    A lift with entrances on two opposite sides of the lift shaft.
  • traction test
    A safety test to ensure that there is the correct amount of friction between the suspension ropes and the traction sheave.
  • triplex
    Three lifts in a group.
  • voice link
    A system that provides two-way voice communication between the lift and KONE service centre.