Great success for Elevcon 2025
High-Tech Award to Korkealaakso
From 17 to 19 June 2025, Elevcon 2025 was held in Lisbon, Portugal. Now in its 24th edition, the International Vertical Transport Congress organised by IAEE (International Association of Elevator Engineers) bringed together experts, professionals and enthusiasts from across the industry to talk about new technical and regulatory developments, exchange ideas and promote culture and collaboration.
Elevcon 2025
The Elevcon 2025 programme included presentations, panel discussions and networking opportunities. This year’s event was divided into 12 sessions that addressed topics such as energy efficiency, elevator planning and architecture in tall constructions (areas in which the presence of the vertical transport system is of fundamental importance), sustainability and carbon footprint, quality and safety related to the installation of equipment and certain components: ropes, deflection pulleys and ropes, PMSM (Permanent Magnet Synchronous Motor) efficiency, and brake safety, as well as a concluding focus on escalator safety.
The attendee group of Elevcon 2025
During the Congress, a jury of international experts (comprising members of the IAEE Board of Directors and Elevatori Magazine) has, as usual, award the “Elevatori-Elevcon Hi-Tech Award” for the best technical paper on the most innovative topics of this edition.
The IAEE General Assembly also took place during Elevcon 2025.
Elevatori-Elevcon High-Tech Award
Elevatori Magazine attended the congress as media partner, with the presence of Editor-in-Chief Maddalena Parotelli. As was also the case in the previous six editions, the ʻElevatori-Elevcon High-Tech Awardʼ, the prize for the best presentation at the congress, has be awarded during Elevcon 2025 by a jury of industry experts.
The High-Tech Award Committee 2025
Chair of the High-Tech Award Committee
Mrs. Maddalena Parotelli, editor-In-Chef Elevatori Magazine, Italy
Members of the Committee
Mr. Johannes de Jong, EVP, Elevating Studio, Finland
Prof. Lee Gray, University of North Carolina at Charlotte, USA
Prof. Keisuke Minagawa from Saitama Institute of Technology, Japan
Mr. Pascal Rebillard, technical Fellow Otis Elevator Co., France
Elevcon 2025: all the Abstracts of the speeches and pictures of the event
Day 1 – ELEVATOR ENERGY EFFICIENCY AND PLANNING
OPENING SESSION
Welcome Speech – Program of the Conference – Dr. Marja-Liisa Siikonen, MLS Lift Consulting Ltd., Finland IAEE President, Elevcon Congress Chairwoman & Program Manager
Congress Arrangements – Mr. Gil Stier, IAEE Administrative Board Chairman, Israel
SESSION 1: KEYNOTE SPEAKER
Chairperson: Dr. Marja-Liisa Siikonen, CEO, MLS Lift Consulting Ltd., Finland IAEE President, Elevcon Congress Chairwoman & Program Manager
Elevating Intelligence: Addressing the Divide in the Global Elevator Market
Prof. Richard Peters, Peters Research Ltd., UK Presenting: Richard Peters
Abstract: The global elevator and escalator industry is on track to reach €100 billion by 2030, with more than 28 million elevators expected to be in service by then. This significant growth is driven by rapid urbanisation, increasing building density, and the need to modernise ageing equipment. While new installations continue, most of the industry’s revenue comes from maintenance and modernisation rather than new equipment sales.
The market remains highly consolidated, with the four largest Original Equipment Manufacturers (OEMs) commanding nearly 60% of its total value. Thanks to their substantial resources, these dominant OEMs are developing advanced solutions integrating intelligent dispatching, IoT (Internet of Things), AI-driven diagnostics, and predictive maintenance. This raises a pressing question: how can smaller OEMs and independent suppliers offer comparable, world-class, intelligent elevator solutions? Moreover, how can these technologies be added to both existing and new systems without major redesigns or excessive additional costs, and how can we ensure that AI-driven dispatching, predictive maintenance, and automation are available beyond new installations and the ecosystems of large OEMs?
Addressing these challenges requires a fundamental shift. Elevator controllers must remain responsible for safety while relinquishing control over call devices, the sequence in which calls are served, and accepting door-open and door-close requests. Embracing this approach and tackling the related challenges of creating a universal dispatcher that can work with any controller represents a paradigm shift in how elevator systems are conceived and operated.
Furthermore, sensor data not typically shared with the dispatcher can significantly improve dispatching efficiency. New access to dispatcher data can enhance diagnostics and predictive maintenance; information usually unavailable to third-party IoT solutions. Achieving this “intelligence democratisation” in the industry is possible, but it depends on collaboration among suppliers of non-proprietary equipment to develop robust, widely adoptable solutions for intelligent elevator operations.
SESSION 2: ENERGY EFFICIENCY AND SERVICE LEVEL
Chairperson: Dr. Janne Sorsa, Global Vertical Transportation Traffic Expert, Elevating Studio Pte. Ltd., Finland
RIGID CHAIN TECHNOLOGY (RCT) as an Alternative Drive Solution – Starts Where Others Reach Their Limits
1Klaus Wuerkner and 2Olaf Klingner
1Vice President SERAPID Lift Systems at SERAPID Group, Germany
2Senior Sales Manager in the SERAPID Lift Systems, Germany
Presenting: Klaus Wuerkner
Abstract: Rigid Chain Technology is a safe, compact, precise, and straightforward electro-mechanical drive solution. It is designed for moving heavy loads and expands the range of existing solutions in traditional markets.
Applications that were previously difficult to engineer now have a solution with this key technology.
RCT has already built its reputation by creating solutions for moving the heaviest of loads in other industrial sectors.
This robust mechanical technology has been engineered into and installed in thousands of locations, in the harshest environments, and for the most demanding applications where operational failure is not an option.
These electro-mechanical systems are easily installed into new and existing elevator pits and require no boreholes or large machine rooms.
All equipment fits into a shallow pit, saving on space and therefore maximizing building usage.
Low energy consumption, zero emissions, and a low carbon footprint of this technology add up to today’s requirements for an eco-friendly urban development.
Energy-Efficient Elevator Group Controller with Passenger preference integration
Antti Korkealaakso1, Mirko Ruokokoski1, Juho Kokkala1, Tuomas Myllymäki1, and Faris Ilyas Shaikh2
1KONE Corporation, Finland
2KONE Elevator India Private Ltd., India
Presenting: Antti Korkealaakso
Abstract: This paper introduces an energy-efficient elevator group controller with destination control that incorporates passenger preferences. An elevator group controller is responsible for assigning passenger calls to elevators, typically nowadays selecting the best elevator by optimizing service quality measures, such as minimizing average passenger waiting time.
Recently, there has been growing interest in considering the energy consumption of elevators. However, service quality and energy consumption are often conflicting objectives, i.e., reducing energy consumption may result in longer waiting times for passengers.
To strike a balance between these goals, energy-efficient controllers adapt to passenger demand, conserving energy during low-demand periods while prioritizing service quality and handling capacity during high-demand times. Some passengers, however, may prefer optimized service even during low-demand periods. This paper presents a destination control system that allows passengers to express their preferences regarding their ride, choosing between a service-optimized or energy-optimized elevator experience.
Door Sensor-Based Systems Increase Elevator Performance, Maintenance Efficiency and Customer Satisfaction
Mr. Jan Giger, President Business Unit Elevator & Escalator, CEDES AG, Switzerland
Abstract: Labor shortage and passenger waiting times are two key challenges the vertical transportation industry faces. Door sensor systems are standard for almost all elevators sold nowadays.
Such sensor systems historically served the important but sole purpose of protecting passengers and objects entering and leaving an elevator. Going forward, such sensor systems can provide immediate feedback on traffic flow in and out of an elevator cabin, recognize special objects, as well as determine the health status of the elevator.
Connected to the elevator controller and/or maintenance platforms, the efficiency of both the elevator and its service can be enhanced based on the additional data provided.
Even more benefits for the entire elevator system can be derived if such systems are combined with emergency call functions or other elements essential to the proper functioning of the elevator or the satisfaction of the equipment owner and passengers.
SESSION 3: ELEVATOR PLANNING AND ARCHITECTURE IN TALL CONSTRUCTIONS
Chairperson: Prof. Richard Peters, Director of Peters Research Ltd. Visiting Professor at the University of Northampton, UK
From left: Richard Peters (Session 3 Chairperson), with the speakers Hongliang Liang, Marja-Liisa Siikonen, C. Erdem İmrak & Andreas Fleischmann
Mix-use Double Deck Lifts and Single Deck Lifts in Office Buildings
Hongliang Liang CEng FCIBSE, Aliang Lift Design Studio Ltd, UK
Abstract: Only when double-deck (DD) lifts are used as shuttle lifts they save 50% space; DD lifts can save only 30% (or 1/3) of space compared to single-deck (SD) lifts, rather than the expected 50%. However, their equipment and maintenance costs are 2.5 to 3.5 times those of the SD lifts at the same capacity per deck. This makes them a less viable solution for developing countries. Additionally, DD lifts consume excessive energy during off-peak hours when both decks operate with only a few passengers. This paper proposes an innovative hybrid approach that combines DD lifts with SD lifts to optimize space, reduce costs, and improve energy efficiency in office buildings, particularly in single-tenant office buildings.
A past office project with 29 floors initially required 12 SD lifts. Replacing them with DD lifts of the same per-deck capacity would require eight DD lifts. However, since the 12 SD lifts were designed in two zones, the low-rise zone can save 1/ 4 space of the original; the total space saving is even less than 1/3, while equipment costs—including the cost of a pair of escalators—would be at least twice as high.
Consequently, this solution was rejected at the initial traffic analysis stage. Ultimately, an optimized solution was implemented: six DD lifts served floors G (1)–23, while three SD lifts served floors 24–29. The six DD lifts operated only during peak hours, whereas the three SD lifts ran continuously. During peak periods, these SD lifts served senior executives on the top six floors only, but during off-peak hours, they were available to all building occupants, significantly reducing energy consumption. Additionally, if feasible, the three SD lifts could be designed as scenic lifts on one side of the building.
This hybrid approach is also applicable to taller office buildings, for office buildings with 45-55 stories, two groups of DD lifts and four SD lifts will be required; For 65-75 stories, three groups of DD lifts and five SD lifts will be required. Each group of DD lifts will serve 20 floors to make the most of the DD lifts, but the main purpose of these arrangements is to save energy significantly during off-peak times.
Overall Efficiency of Complex Elevator Systems
Dr. Marja-Liisa Siikonen, MLS Lift Consulting Ltd, Finland
Abstract: The service level of complex elevator systems can be compared by simulating passenger traffic flow in a building. In this paper, single- or double-deck systems where passenger calls are served by conventional or destination control systems are modeled and compared. Passenger traffic patterns, such as pure up-peak, and lunchtime, were fed into the selected building. The simulation uses constant two-hour traffic patterns defined by ISO 8100-32:2020. The statistics of passenger waiting and journey times were analyzed for the simulation e service times in different types of buildings and traffic situations. For each simulated elevator system, the highest passenger demand where the simulated service meets the ISO design criteria is selected as the simulated handling capacity of the traffic pattern. The lowest handling capacity of the two simulated traffic patterns was selected to cover both traffic situations. The lowest simulated handling capacity represented the overall handling capacity of the system. Finally, the overall handling capacities of different elevator systems were compared.
Wooden Outdoor Elevator in the Buyukada Called Ataturk Elevator
Sefa Targıt1, C. Erdem İmrak2, Adem Candaş3, Mohsen Seyyedi4
1 Asray Company, Gebze, Kocaeli, Turkey
2,3,4 Elevator Technologies Laboratory, Faculty of Mechanical Engineering, Istanbul Technical University, Turkey
Presenting: C. Erdem İmrak
Abstract: In Büyükada, which is the largest of the nine islands comprising the Princess’ Islands in the Marmara Sea, there is an elevator, built in 1936 to accommodate a visit by Atatürk to the Anatolian Club (founded in 1926).
The outdoor elevator for transportation from sea level to the hotel entrance defies the years with its wooden structure in a metal shaft.
The elevator, which is referred to as the Atatürk Elevator, attracts attention with its steel structure and wooden components. In this study, the Atatürk Elevator, which is one of the historical elevators of Istanbul, is introduced in detail.
From Concept to Construction with Elevate and DigiPara Elevator architect
Andreas Fleischmann1, and Andrés Garcia Damjanov2 1CEO DigiPara, Germany 2Co-CEO Digipara, Germany
Presenting: Andreas Fleischmann
Abstract: This presentation shows how Elevate by Peters Research and DigiPara Elevatorarchitect support VT consultants throughout the elevator planning process—from early concept to final construction. It starts with traffic analysis, including comparisons of lift configurations and manufacturer-specific dimensions and performance. The outcome is a set of consistent, automated concept layouts based on typical shaft sizes and standardized rules. VT consultants can define their own “worst-case scenario” shaft dimensions to ensure compatibility across multiple manufacturers. These layouts can be further developed into precise BIM models with various Levels of Development (LOD), ultimately resulting in accurate, construction-ready elevator drawings. The approach enables a seamless and efficient transition from feasibility to fully coordinated construction documentation.
SESSION 4: PANEL DISCUSSION
Standardization of Elevator Traffic Planning – How Does ISO 8100-32:2020 Match the Needs Arising from the Planning of Tall Buildings?
Chairperson: Dr. Arthur Hsu, Otis Lead Design Center, USA
Panelists:
Dr. Arthur Hsu, Otis Lead Design Center, U.S.A
Mr. Mikko Kontturi, KONE Corporation, Finland
Prof. Richard Peters, Peters Research Ltd., UK
Dr. M-L Siikonen, MLS Lift Consulting Ltd., Finland
Dr. Janne Sorsa, Elevating Studio Pte. Ltd., Finland
Abstract: ISO 8100-32 is an international standard published in 2020, addressing the planning and selection of passenger elevators in office, hotel, and residential buildings. The standard describes two methods to determine an appropriate elevator installation: traffic calculation for simpler cases and simulation for complex cases. It gives guidance on inputs to the analysis methods and how to review the results. This standard covers (single-deck) passenger elevators only with rises no greater than 200 m and speeds no greater than 7 m/s that operate as a conventional control system or a destination control system. The standard does not cover more complex elevator products, such as double-deck elevators, systems with multiple elevator cars sharing a single hoistway, or analysis methods for evacuation elevator planning and annual energy consumption.
The panel’s purpose is to introduce elevator traffic planning in the context of tall buildings and connect the field to international standards. The panelists will discuss the use of the current ISO 8100-32 according to their experience, along with real-world examples, the ongoing activities within international working groups, and how various elevator standards could be further developed to account for traffic.
IAEE General Assembly Meeting
Chairperson: Mr. Robert Nicholson, IAEE Board of Executives, Architectural Elevator Consulting, LLC, U.S.A
Day 2 – ELEVATOR COMPONENTS AND SUSTAINABILITY
SESSION 5: SUSTAINABILITY, CARBON FOOTPRINT
Chairperson: Mr. Robert Nicholson, IAEE Board of Executives, Architectural Elevator Consulting, LLC, U.S.A.
From left: Robert Nicholson, Session 5 Chairperson, with the speakers Magdalena Krstanoski, Claudio Donghi, Robert Kaspersma and Christian Thoeny
Rethinking the Elevator Concept Design, Front End Planning and Critical Aspects of Maintenance Important for Elevator in Buildings that Serve Senior Population
Mrs. Magdalena Krstanoski, Everglades University, Construction Management, Sarasota, Florida, U.S., Concept Solution, LLC Founder, Clearwater Beach, Florida, U.S.
Presenting: Magdalena Krstanoski
Abstract: Planning and designing with consideration of the needs of the elderly population is critical for implementing accessibility when aging population shares the building environment with the general population.
Although anthropometry is many times viewed by collecting dimensional data or measurements only, the complexity of the discipline of anthropometry can have significant meaning when designing for the communities with accessibility and aging population in mind. Necessity for understanding, anthropology of space, proxemics and dynamics of space for the segment of population seniors with various degrees of impairment, people with Parkinson disease, people with disabilities, on Autism spectrum, are critical in order to design the vertical transportation systems and circulation areas around the elevating devices in which this segment of population is in function and utilizes it.
In the existing buildings, understanding all these factors will contribute to better decision-making process when deciding on the transportation device maintenance needs.
Society demands are changing, perhaps with the same pace as aging population is increasing, stimulating the need for socio-environmental-technological decision-making process changes. Five practical guidelines can assist in the decision-making process in two aspects – the concept design phase and the maintenance phase, by discussing challenges between the design and can the same can influence the maintenance. These five principles will help navigate the complex nature of design, and utilization and outline the collaborative nature of long-term forecasting, planning and maintenance.
Accessibility to basic services and mobility is unbreakable part of the basic design solution and built environment. In the world of globalization, there are still centralized solutions that does not provide accessibility for all, senior ‘s mobility challenges are not addressed, and limitations in mobility can be observed. This research touches several aspects from designing with aging population and autism in mind, Parkinson disease mobility, mobility challenge to relationship between design approach, inclusiveness, regulation compliance, sustainable aspects, accessibility, mobility, and is much closely interrelated and must be addressed to develop a sustainable future.
How to Implement Circular Economy Practices in Lift Industry
Claudio Donghi, and Robert Kaspersma, KONE Corporation, Italy
Presenting: Claudio Donghi and Robert Kaspersma
Abstract: In today’s world, where sustainability and resource efficiency are paramount, the concept of a circular economy has emerged as a transformative solution. The transition to a circular economy addresses the pressing need to mitigate environmental risks, manage resource depletion, and respond to regulatory and consumer pressures for sustainability.
The new series of ISO 59000 standards is a key document being developed to establish a common framework and standardize the implementation of circular economy principles in organizations and business models.
This paper provides guidance on how to implement circular economic principles and practices in the vertical transportation industry, highlighting challenges and opportunities. By adopting these standards, the lift industry can accelerate its transition to a circular economy, minimize resource use, and optimize the circular flow of resources, thereby contributing to sustainable development on a global scale.
Agnostic 3rd Generation Smart Elevator Revolution
Author: Christian Erik Thoeny, CEDES AG, Switzerland
Abstract: Imagine an elevator that never breaks down and the operating company is always in control, 24/7. At the same time, based on continuous real-time data, the Elevator’s carbon footprint and operating cost are reduced.
Train stations, Airports, Office Buildings, Hospitals, Housing complexes, and other buildings with heavy pedestrian and goods traffic must never be out of service. Without an early warning system, an Elevator will eventually break down. Wear and tear over time leads to unwanted and unscheduled breakdowns.
The 3rd generation smart elevator sensor system, powered by cloud-based AI, will detect aging or defective components and alert the maintenance provider before they break. Hence, the technician is enabled to fix the problem the first time, having the right replacement components and tools in hand.
A huge problem is the aging installed base. A significant share of these elevators is not even capable of communicating die to their old controllers. The 3rd Generation, easy-to-install and cost-effective, retrofittable, and cloud-connected sensor fusion IoT devices eliminate this problem 100%, and at the same time save energy.
SESSION 6: ELEVATOR COMPONENTS: ROPE ANALYSIS
Chairperson: Prof. Erdem Imrak, Istanbul Technical University, Turkey
From left: Erdem Imrak, Chariperson of Session 6, with the speakers Takashi Matsushima, Jaakko Kalliomäki, Sriram Rangarajan
Probabilistic Assessment of Seismic Response of Hoist Ropes
Takashi Matsushima1, Keisuke Minagawa2 and Satoshi Fujita3
1Graduate School of Saitama Institute of Technology, Japan
2Saitama Institute of Technology, Japan
3Tokyo Denki University, Japan Presenting: Takashi Matsushima
Presenting: Takashi Matsushima
Abstract: Snagging of hoist ropes on components in a hoistway is the most common type of earthquake damage to lifts.
Predicting the response of ropes during earthquake by response analysis is an effective means of preventing rope snagging.
However, there are various uncertainties in the response of ropes during earthquakes, e.g. seismic motion, building response, cage position, loading etc., and it is difficult to assess the rope response with certainty.
Therefore, this paper deals with a probabilistic assessment of the seismic response of hoist ropes. At first, an analytical method of ropes based on the wave equation is introduced.
Then, seismic response analyses with various condition are carried out. Finally, the analytical results are assessed by using probabilistic approaches.
High-Speed Rope Traction During Emergency Stops
Jaakko Kalliomäki1, Petteri Valjus1 and Erkka Kiviaho1
1KONE Corporation, Finland
Presenting: Jaakko Kalliomäki
Abstract: EN 81-50:2020 Chapter 5.11.2.3.2 specifies that friction coefficient in emergency stop reduces infinitely as a function of the rope speed. Experience shows that this is not necessarily accurate.
This paper studies the background of the emergency stop friction coefficient for conventional steel ropes, highlights certain deficiencies in the established calculation methodology, presents test results attained by laboratory and field testing and proposes guidelines for determining friction in emergency stops.
The emergency stop traction requirements have to be set so that they ensure an appropriate safety level while simultaneously avoiding excessive material or energy consumption in conflict with global sustainability targets.
Modelling, Analysis and Characterization of Vibrational Frequencies of Elevator Ropes
Sriram Rangarajan1, Heinz Studiger1, Michael Siegfried1
1BRUGG Lifting AG, Switzerland
Presenting: Sriram Rangarajan
Abstract: Modern elevator systems demand lower maintenance, less downtime, and higher ride quality.
However, premature failure and sub-standard performance of ropes are a major concern among rope manufacturers and elevator maintenance personnel. An often-reported claim that affects the performance of the ropes and the ride comfort is rope vibration.
Vibrations cannot be eliminated, but can be minimized or avoided. Elevator systems typically have multiple longitudinal natural vibrational frequencies where the rope vibrations are severe.
These have been identified and characterized with three variants of ropes, namely steel core, mixed core, and natural fiber core rope, using theoretical modelling, analysis, MATLAB simulations, and experiments on a laboratory test bench.
The system transfer functions have been derived to characterize the longitudinal vibrational frequencies. Various sources of excitation for each mode of vibration have also been discussed.
SESSION 7: ELEVATOR COMPONENTS: DEFLECTION PULLEYS AND ROPES
Chairperson: Mr. Sefa Targit, IAEE Board of Executives, Vice President, MAKFED Turkish Machinery Federation, Turkey
From left: Sefa Targit, Chariperson of Session 7, with the speakers Lothar Sieber, Bruno Vusini, Adem Candaş
Trust and Confidence in Optamid® Deflection Pulleys
Lothar Sieber, Röchling Industrial Xanten GmbH, Germany
Abstract: Deflection pulleys are an integral part of almost all elevators.
Traditionally, steel and cast iron pulleys were used to deflect the steel wire ropes at the car, next to the drive sheave, and at the counterweight.
Deflection pulleys made of engineering plastics have also been used reliably for years.
This also applies in particular to new load-bearing media such as plastic-coated ropes and load-bearing belts.
The significantly lower weight makes installation easier, increases the service life of the rope, and reduces energy consumption.
Application of Machine Learning in the Analysis of Magnetoinductive Diagrams for Monitoring Wire Ropes
Bruno Vusini1, Daniel Rossi1, Enrico Furno1, Aldo Canova2
1AMC Instruments, Italy
1Politecnico di Torino, Italy
Presenting: Bruno Vusini
Abstract: Monitoring the health of suspension wire ropes is essential for ensuring safety and operational efficiency in elevators. One common technique for assessing rope conditions is magnetoinductive analysis, particularly of LF (Localized Fault) diagrams. However, interpreting these diagrams requires skilled technicians to detect hidden anomalies. Machine learning offers a promising solution to automate and improve this diagnostic process.
In this study, we applied machine learning algorithms to analyze magneto-inductive diagrams for defect detection in approximately 500,000 ropes, traditionally evaluated by our ISO 9712 experts. Our goal was to train a model to replicate expert behavior in interpreting LF diagrams, ensuring accuracy and reliability in diagnoses.
The algorithm, trained on labeled datasets, successfully identified defects such as section loss and broken wires. Validation results were highly encouraging, with diagnostic accuracy nearly matching that of human experts while significantly reducing analysis time. This approach automates rope monitoring, enhancing speed, efficiency, and scalability, and supports predictive maintenance for timely interventions.
Design and Analysis of Wire Rope Fatigue Testing Experimental Setup
Mohsen Seyyedi1, Adem Candaş2, C. Erdem İmrak3, Emre pınarbaşı4, Tolga Balcı5
1,2,3Elevator Technologies Laboratory, Faculty of Mechanical Engineering, Istanbul Technical University, Turkey
4,5Emlak Konut Asansör (EKA), Istanbul, Turkey
Presenting: Adem Candaş
Abstract: The design and build-up of an experimental test setup for steel wire ropes are discussed, focusing on the bending over sheave (BoS) fatigue mechanism. The setup focuses on factors such as tension, bending cycles, and sheave diameter effects on rope durability in operational conditions. The system ensures accurate force distribution and monitoring during the test cycles. Static analysis verifies the setup’s structural integrity under various load conditions, ensuring it meets the requirements for fatigue testing. Additionally, the logic behind the design is detailed, highlighting key parameters such as rope diameter, tensile load, and machine speed that influence the results. The contemplated and materialised test setup aims to enhance the understanding of fatigue behaviour in wire ropes, providing critical insights into their operational lifetimes and contributing to improved safety in industrial applications.
SESSION 8: ELEVATOR COMPONENTS: PMSM EFFICIENCY
Chairperson: Dr. Marja-Liisa Siikonen, CEO, MLS Lift Consulting Ltd., Finland IAEE President, Elevcon Congress Chairwoman & Program Manager
Impact on Permanent Magnet Motor Efficiency due to Demagnetization of Magnets
Albert So1, and W.L. Chan2
International Association of Elevator Engineers (HK-China Branch)
1 Faculty of Arts, Science and Technology, University of Northampton
2 Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University
Presenting: Albert So
Abstract: More than two decades ago, most elevator drive motors were of the induction type, though very often, the advanced field-oriented vector control (FOC) methodology was adopted. Nowadays, almost all new traction elevators employ the permanent magnet synchronous motor (PMSM) technology due to its capability of a higher torque-to-size ratio and energy saving. However, permanent magnets are not permanent at all, as they gradually get demagnetized, thus possibly downgrading the energy efficiency, which may not be easily noticeable because the power electronic drives automatically boost up the input power to meet the load demand. Such a phenomenon may trip the inverter drives due to overcurrent, which may bring about a safety concern, not to mention the extra energy loss. Further energy loss may elevate the operating temperature of the PMSM, thus further demagnetizing the permanent magnets.
Moreover, the desirable energy-saving performance of the PMSM is downgraded. In this paper, by using computer simulation, the authors will demonstrate the gradual deterioration of PMSM performance, in terms of both energy consumption and torque response, due to the gradual demagnetization of the permanent magnets. Maintenance professionals of elevator systems must pay attention to such demagnetization effect and replace the rotor and permanent magnets on time to make sure the PMSM-based elevator drive is as efficient as brand new.
Day 3 – INTELLIGENT SENSORS, QUALITY AND SAFETY
SESSION 9: HIGH-TECH AWARD
Chairperson: Maddalena Parotelli, Volpe Editore, Elevatori Magazine, Italy
The winner of the ‘Elevatori-Elevcon High Tech Award’ 2025 is the paper ‘Energy-Efficient Elevator Group Controller with Passenger Preference Integration’, written by Antti Korkealaakso, Mirko Ruokokoski, Juho Kokkala, Tuomas Myllymäki (Kone Corp. Finland) and Faris Ilyas Shaikh (Kone Elevator India, India) and presented by Antti Korkealaakso, who received the award. Present to award the prize was Maddalena Parotelli, Editor-in-Chief of Elevatori Magazine, who chaired the jury of experts that selected the winner, composed of Johannes de Jong (EVP, Elevating Studio, Finland), Prof. Lee Gary (University of North Carolina at Charlotte, USA), Prof. Keisuke Minagawa (Saitama Institute of Technology, Japan) and Pascal Rebillard (Technical Fellow, Otis Elevator Co., France).
The other finalists, who came second and third respectively, were the paper ‘Digital Door Twin to Improve Elevator Door Installation Quality and Reduce Accidents Due to Imperfect Installation’, written by Giuseppe De Francesco and Federica Codalli (Wittur Group, Italy), presented by Giuseppe De Francesco and the paper “Impact on Permanent Magnet Motor Efficiency due to Demagnetisation of Magnets, written by Prof. Albert So and W.L. Chan and presented by Albert So.
SESSION 10: INSTALLATION QUALITY AND SAFETY
Chairperson: Prof. Albert So, Scientific Advisor, IAEE Faculty of Arts, Science and Technology, University of Northampton
From left: lbert So, Chariperson of Session 10, with the speakers Giuseppe de Francesco, Michael Merz and Beat De Coi
Cordless Power Tools Provide Data from Installation Site
Dr. Sc. Techn. Michael Merz, Hilti Corporation, Principality of Liechtenstein
Abstract: How valuable is it to get automatic insight in the planning office about what’s going on at the installation site of your elevator?
IoT technology enables power tools to upload data on its usage to the cloud and software makes it available as information for different purpose. Assignment of tools to workers supports information on who is working when on which site and what type of work did progress.
Data gathering on site and provision of information to office happens fully automatic in the background without disturbing the work progress.
This paper introduces to a new technology embedded into cordless power tools using IoT, cloud technology and software to provide real-time data from installation site to office as a basis for planning.
“Digital Door Twin” to Improve Elevator Door Installation Quality and Reduce Accidents Due to Imperfect Installation
Giuseppe de Francesco and Frederica Codalli, Wittur, Italy
Abstract: 70% of new elevator callbacks are due to doors. Building a digital door twin means several door installation features are detected by connecting data from car door operator electronics and several sensors. Collected data are analyzed in the cloud with especially developed algorithms and installation issues or errors are discovered and listed.
The presentation will elaborate on several strategies to detect errors from raw data and the implications of such controls at installation site before elevator commissioning. This approach may reduce elevator accidents due to imperfect installation and further raise safety level of new elevators worldwide.
Innovative Sensor Solutions Using Optical Semiconductor Technology
Beat De Coi, ESPROS Photonics AG, Switzerland
Abstract: The elevator industry faces growing demands for enhanced safety, efficiency, and predictive maintenance. ESPROS introduces novel solutions leveraging the OHC15L optical semiconductor technology, a highly advanced platform for developing precise, reliable, and compact sensors.
Our innovations address key challenges in real-time people counting, obstacle detection, positioning, and speed monitoring, enabling smarter and safer elevator operations.
With accurate 3D imaging and high ambient light immunity, OHC15L-based sensors unlock new opportunities in intelligent control systems, energy efficiency, and maintenance optimization. This presentation will explore cutting-edge applications and their impact on the future of vertical transportation.
SESSION 11: BRAKE SAFETY
Chairperson: Dr. Marja-Liisa Siikonen, CEO, MLS Lift Consulting Ltd., Finland IAEE President, Elevcon Congress Chairwoman & Program Manager
From left: Marja-Liisa Siikonen (Session 10 Chariperson), with speakers Alexander Hutler (Session 11), Michael Ford (Session 12) and Shaik Javeed (Session 11)
Enhancing Passenger Safety: A Framework for Assessing and Optimizing Elevator Braking Distances
Shaik Javeed, Agmelco Elevator Co LLC, Deira, Dubai UAE
Presenting: Shaik Javeed
Abstract: Passenger safety is paramount in the maintenance of elevators and escalators. When a company assumes responsibility for a project, it must address various aspects related to inspections and proper maintenance protocols. It is essential, beginning with the pre-contract survey or immediately after the contract is signed, to ensure that all safety elements are functioning correctly. This diligence should be maintained during each subsequent monthly maintenance visit.
This paper aims to focus on the accurate determination of braking distances, as many lift manufacturers—except for a few—do not provide criteria for testing and verifying these distances within their controllers. This information will be beneficial for third-party maintenance companies in independently assessing safe braking distances, thereby enhancing elevator safety.
We propose the use of rope load cells to measure and calculate the empty cabin weight and counterweight balance ratio, as this data is often unavailable to maintenance companies. These weight inputs are crucial for accurately measuring braking distances, which are derived using a tachometer wheel that contacts the main traction ropes. By assessing both maximum and minimum stopping distances, we can effectively verify the safety of the elevator.
Optimized Elevator Brakes for The New Standards
Authors: Sebastian Steinert and Alexander Hutler, Mayr power transmission, Mauerstetten, Germany
Presenting: Alexander Hutler
Abstract: Wherever people are transported by elevators, passenger safety is the top priority. Safety-relevant components such as elevator brakes must therefore meet the highest quality requirements. In addition to safety, the focus in an elevator is always on the noise level, especially with brakes. The number of international manufacturers of elevator brakes is small, but the market offers various noise-damping concepts with elevator brakes. A new, revolutionary damping system from Mayr, Germany not only makes the brakes quiet as a whisper but also has a decisive side effect: it ensures more stability and, under certain circumstances, more safety over the entire service lifetime and enables reliable, intelligent and innovative brake monitoring – without any additional sensors. This monitoring not only helps to reduce or even completely avoid errors and downtimes, but also supports demand-based maintenance of the elevators in line with the workload and automated remote maintenance.
SESSION 12: ESCALATOR SAFETY
Chairperson: Dr. Marja-Liisa Siikonen, CEO, MLS Lift Consulting Ltd., Finland IAEE President, Elevcon Congress Chairwoman & Program Manager
What Could Go Wrong With an Escalator?
Mr. Dave Cooper, University of Northampton, UK
Abstract: This paper forms part of a series where the author looks at escalator failures and proposes ways of mitigating them. There have been a number of high-profile escalator runaways in recent years, resulting in passenger injury and deaths. This paper will look at the standards for escalators over the years and how they have developed concerning the prevention of this type of accident. It challenges the current standards as to whether they are sufficient. The paper will also look at the appropriateness of EN115, how it allows variables dependent upon the rise and angle of inclination, and whether this can be improved. The paper will be supported by video evidence.
Summary and Conclusion of the Congress
Chairpersons: Dr. Marja-Liisa Siikonen, IAEE President, Elevcon Congress Chairwoman & Program Manager
Mr. Gil Stier, IAEE Administrative Board Chairman, Israel
