Analiza zmogljivosti programirljivih krmilnikov v frekvenčnih pretvornikih Danfoss in ABB

Tomšič, Blaž (author), Lavrič, Henrik (mentor)

V diplomskem delu obravnavamo analizo zmogljivosti programirljivih krmilnikov, ki so vgrajeni v frekvenčne pretvornike proizvajalcev ABB in Danfoss. V zadnjih letih so frekvenčni pretvorniki postali več kot le naprave za regulacijo hitrosti asinhronskih motorjev - ponujajo tudi možnost vgrajenega programiranja z uporabo PLK logike. To omogoča izvedbo preprostih logičnih funkcij kar znotraj pretvornika in tako zmanjšuje potrebo po dodatni opremi, kar posledično pomeni manjše stroške in kompaktnejše sisteme. Cilj naloge je primerjati pristopa dveh največjih proizvajalcev na tem področju - Danfossa, ki uporablja sistem Smart Logic Control (SLC), in ABB-ja z njihovim sistemom Adaptive programming. Glavno raziskovalno vprašanje je, kako se ti pristopi razlikujejo z vidika uporabniškega vmesnika, kompleksnosti programiranja, fleksibilnosti, odzivnega časa in primernosti za različne industrijske aplikacije. Posebna pozornost je namenjena tudi uporabniški izkušnji in hitrosti uvajanja v programsko okolje, saj so ti dejavniki ključni pri dejanski uporabi v praksi. V eksperimentalnem delu naloge so bile analizirane tehnične specifikacije in programska orodja Drive Composer (ABB) ter MCT 10 (Danfoss). Nato smo razvili enostavno programsko logiko z uporabo obeh sistemov in primerjali rezultate z vidika funkcionalnosti, hitrosti implementacije in stabilnosti delovanja. Preizkusili smo tudi naprednejše funkcije, kot so pogojne zanke, časovniki in integracija s perifernimi napravami. Rezultati kažejo, da oba sistema omogočata učinkovito izvedbo osnovnih logičnih nalog, vendar se razlikujeta po pristopu - ABB nudi večjo prilagodljivost in podporo za kompleksne procese, medtem ko Danfossov SLC ponuja enostavnost in preglednost pri osnovnih nalogah. Na podlagi teh ugotovitev podamo tudi priporočila za izbiro ustreznega sistema glede na kompleksnost aplikacije, izkušnje uporabnika in zahteve glede hitrosti implementacije. Diplomsko delo tako prispeva k boljši informiranosti industrijskih uporabnikov o prednostih in slabostih obeh pristopov ter olajša odločitev pri izbiri frekvenčnega pretvornika z vgrajenim krmilnikom.

• Language: Slovenian
• Keywords: frekvenčni pretvorniki, programirljivi krmilniki, PLK logika, Smart Logic Control (SLC), Adaptive programming, IEC 61131-3, industrijske aplikacije
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FE - Faculty of Electrical Engineering
• Year: 2025
• PID: 20.500.12556/RUL-171658
• COBISS.SI-ID: 248208131
• Publication date in RUL: 29.08.2025

Secondary language

• Language: English
• Title: Performance analysis of programmable controllers in Danfoss and ABB frequency converters

Abstract

This thesis presents a performance analysis of programmable logic controllers (PLKs) embedded in frequency converters produced by ABB and Danfoss. In recent years, frequency converters have evolved beyond simple motor speed controllers. Modern units often include integrated PLK functionality, enabling the execution of basic control logic directly within the device. This reduces the need for external hardware, decreases overall system costs, and simplifies implementation in industrial environments. The main goal of the thesis is to compare the programming approaches of the two manufacturers - Danfoss with its Smart Logic Control (SLC) system and ABB with its Adaptive programming platform. The study focuses on differences in user interfaces, programming complexity, flexibility, responsiveness, and overall suitability for various industrial applications. Additional emphasis is placed on user experience and learning curve, which are crucial factors in practical use. The experimental part of the thesis includes an analysis of technical documentation and a hands-on evaluation using the Drive Composer software (ABB) and the MCT 10 tool (Danfoss). A basic control sequence was implemented in both systems to assess programming workflow, available functionality, ease of use, and execution performance. More advanced features such as conditional logic, timers, and peripheral device integration were also tested. The results show that both platforms are capable of handling standard automation tasks efficiently, but they differ in their design philosophy. ABB provides more flexibility and support for complex process control, whereas Danfoss offers a simpler and more intuitive solution for basic tasks. Based on the findings, the thesis provides practical recommendations for selecting the appropriate system according to the application's complexity, the user's experience level, and project requirements. This work contributes to a better understanding of the embedded programming capabilities in modern frequency converters and supports industrial users in making informed decisions when choosing between ABB and Danfoss solutions.

• Keywords: frequency converters, programmable controllers, PLK logic, Smart Logic Control (SLC), Adaptive programming, IEC 61131-3, industrial applications