[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-506104-105":59,"doc-detail-506104-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","a-tale-of-two-testing-methods-part-three-final","A Tale of Two Testing Methods - Part Three - Final","","The third and final part of a continuing education series explains how to read and interpret test reports from instrumentation-based CAT5 testing to improve elevator maintenance. It focuses on evaluating machine brake and emergency brake performance using direct measurements of velocity, acceleration/deceleration, stopping forces, and gravity (g) values. Results help identify when repair or maintenance is required and when “passing” results still indicate attention needed before the next five-year test interval.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/a-tale-of-two-testing-methods-part-three-final/506104/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/a-tale-of-two-testing-methods-part-three-final/506104.png","ImageObject",300,407,{"name":92,"@type":93},"Rizky","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-04",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does the ELVI 2 testing method claim to do differently from simulation or observation-only testing?","Question",{"text":112,"@type":113},"It uses instrumentation-based devices and direct measurements to evaluate stopping performance. The results are based on measured values of velocity, acceleration/deceleration, and specific loads, not simulation.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which measurements are included in ELVI 2 test reports for stopping-capability evaluation?",{"text":117,"@type":113},"ELVI 2 reports incorporate measured values of velocity, acceleration/deceleration, and specific loads (including required levels). These inputs feed algorithms that directly and accurately measure system stopping capabilities.",{"name":119,"@type":110,"acceptedAnswer":120},"How are normal vs. excessive deceleration differences interpreted in the machine brake test graphs?",{"text":121,"@type":113},"Brief high deceleration spikes represent normal braking. If deceleration is too low, stopping distance becomes excessive; if too high, passenger comfort suffers and mechanical stress increases.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},506104,1791462635,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},962085564807,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","CONTINUING EDUCATION  \nA Tale of Two Testing Methods, Part Three  \nThe third and final part of this series focuses on test reports, data and the ways this testing method can improve elevator maintenance.  \nby Kevin Heling  \nLearning Objectives  \nAfter reading this article, you should be able to:  \n♦ The Henning ELVI 2 System takes CAT5 testing to an advanced level using instrumentation-based devices and engineering-derived and-proven methods of measuring and documenting stopping forces.  \n♦ ELVI 2 test reports incorporate measured values of velocity, acceleration/ deceleration and specific loads (including required levels), which, in turn, are used in algorithms that directly and accurately measure system stopping capabilities. Nothing about this system involves “simulation.” All results are based on direct measurements.  \n♦ You will see measures of force as gravity values and will learn and understand how much force (in g) is needed to effect safe stops of the elevator being tested.  \n♦ Measurement results will accurately and reliably show when repair or maintenance is needed. Additionally, measured values of some “passing”results will show that attention may be needed in the shorter term — i.e., before the next five-year test interval. Technician/mechanic experience and professional judgment add to this important work.  \n♦ Aspects of elevator system performance are revealed in this testing, which improves maintenance and ultimate safe operation of elevators that receive the benefit of this testing method. These advanced benefits are not possible using just test weights and observing stops.  \nInstrumentation-based and data-driven testing is highly professional and superior compared to simple observation-based Category 5 (CAT5) testing using weights. At a time when the elevator industry has active and growing discussions and initiatives about improving safety and maintenance, it is surprising that labor, AHJs and maintenance/service providers) have not quickly accepted the positive advantages of the ELVI 2 Testing Method. Better CAT5 testing was encouraged by a change in the “Safety Code” that came into place back in 2013.  \nIn Part One of this three-part series, we covered the whats and whys of the Safety Code on CAT5 Testing and the technical objectives the writers of the Code laid out for a real advancement in elevator testing.  \nIn Part Two, we clearly showed that the testing method using weights “is flawed, and, even worse, there is no assurance for us that testing was done correctly or even done at all.” After more than 10 years of direct experience working with an available and broadly accepted “alternative”(better known as Instrumentation and data-based) CAT5 testing, we see that the old  \nmethod, in many cases, is not ”proving” safe emergency stops of elevators.  \nPart Three, this final phase of educating professionals in the industry (especially technicians doing CAT5 testing), now delves into reading and understanding all aspects of the test reports and the data, and learning the many ways this testing method reveals ways of improving the maintenance of elevators (primarily traction systems) .  \nElevator Machine Brake and Emergency Brake Test Results —Overview and Guide  \nLet’s look at the elevator/lift brake test results shown in some accompanying graphics. These tests evaluate whether the machine brake and emergency brake systems meet safety requirements for dynamically stopping (most importantly and the most rigorous test); and holding an elevator car under various load conditions.  \nGraphic 1: Machine Brake Test Diagram  \nThis overview/explanatory diagram shows the phases (graphically) of a machine brake test.  \n♦ Purple line: Vertical acceleration in g-forces  \n♦ Pink line: Speed in m/s  \nValue:  \n1 contact hour (0.1 CEU)  \nThis article is approved for Continuing Education by NAEC for CET, CAT and QEI.  \nEW Continuing Education is currently approved in the following states: AL, ARCO, FL, GA, IL, IN, KY, MD, MO,","cbCainsoLEpQCUfh","https://ap.wps.com/l/cbCainsoLEpQCUfh","pdf",4507471,18,"English","# Learning Objectives\n## ELVI 2 instrumentation-based testing principles\n## Machine brake and emergency brake test overview\n## Graphic 1: machine brake test diagram and phase breakdown\n## Scale interpretation and normal vs. excessive deceleration\n## Graphic 2: failed example","[{\"question\":\"What does the ELVI 2 testing method claim to do differently from simulation or observation-only testing?\",\"answer\":\"It uses instrumentation-based devices and direct measurements to evaluate stopping performance. The results are based on measured values of velocity, acceleration/deceleration, and specific loads, not simulation.\"},{\"question\":\"Which measurements are included in ELVI 2 test reports for stopping-capability evaluation?\",\"answer\":\"ELVI 2 reports incorporate measured values of velocity, acceleration/deceleration, and specific loads (including required levels). These inputs feed algorithms that directly and accurately measure system stopping capabilities.\"},{\"question\":\"How are normal vs. excessive deceleration differences interpreted in the machine brake test graphs?\",\"answer\":\"Brief high deceleration spikes represent normal braking. If deceleration is too low, stopping distance becomes excessive; if too high, passenger comfort suffers and mechanical stress increases.\"}]","A Tale of Two Testing Methods - Part Three - Final | PDF",1791157469,45]