Abstract
Due to the increase in the number of automated processes that employ industrial robots (especially in industrial and laboratory environments, including vacuum systems), and the resulting increase in the number of unresolved service requests, the purpose of the authors’ research was to confirm the occurrence of disturbances in the form of voltage sags that are not recorded by automation systems and which lead to the destruction of robots or their equipment in areas defined by the characteristics of ITIC/SEMI F47 and CBEMA as being free from such disturbances. The article also describes the environmental classification of robots by their process functionalities/features, and recommends equipment that is able to compensate for these disturbances. Such a classification approach can be an excellent tool for building an exploitation culture and assist the conscious selection of electrical equipment in robotised systems susceptible to disturbances (e.g., robots in load-lock in vacuum environment).
Highlights
As part of their research and development work, the authors sought answers to the question of how voltage sags affect the continuous operation and lifespan of single-phase industrial robots with a lifting capacity of up to 10 kg
It is highly probable that the current ITIC/SEMI F47 resistance curves do not reflect problematic phenomena leading to receiver damage, which results from significant progress in the area design and the production of power supply systems, power electronics or automation and control
On the basis of elaborated assumptions and the parameters of electromagnetic compatibility specified in the norms and other documents, the conditions or the occurrence of the dips phenomenon, including separation of unidentified states leading to the total disruption of the robotic unit operation, were determined
Summary
As part of their research and development work, the authors sought answers to the question of how voltage sags affect the continuous operation and lifespan of single-phase industrial robots with a lifting capacity of up to 10 kg. As a result of the research work carried out and the analysis of their results, was the negative impact of stress dips on the durability of industrial robots confirmed as significantly broader than expected, but it was identified that the disturbances leading to this damage were found in areas defined as free from such conditions In this context, the authors decided to make the discovery public, hoping that it would trigger a wide-ranging discussion on the need to continue research in this area, taking into account all types of electrical energy disturbances, including those in the group of three-phase robots. It is highly probable that the current ITIC/SEMI F47 resistance curves do not reflect problematic phenomena leading to receiver damage, which results from significant progress in the area design and the production of power supply systems, power electronics or automation and control This progress involves many problematic phenomena that were not taken into account at the time when the above-mentioned characteristics were designed, which, as the authors showed, increased the risk of destructive disturbances in the area. As this article and the cited publications show, this is an extremely important problem in terms of the effective exploitation of dynamically developing robotic environments, which justifies the undertaking of further work on the cumulative effects ( voltage sags) of disturbances to power quality on the lifespan and stability operation of high power three-phase industrial robots
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