Selection of KNX RF devices is not a product decision—it is a system design decision. Most long-term KNX RF problems (battery complaints, unreliable behaviour, delayed response, repeated service calls) are not caused by wireless technology itself. They are caused by choosing the wrong RF device for the wrong role. This article is a full technical…
Introduction Power supply sizing is one of the most underestimated aspects of KNX system design. In small projects, mistakes often go unnoticed. In medium and large KNX installations, however, incorrect power supply calculation leads to unstable communication, random device failures, difficult commissioning, and long-term maintenance issues. This guide explains how to calculate KNX power supply…
Introduction An undersized KNX power supply rarely causes an immediate, complete system failure.Instead, it creates slow, confusing, and intermittent problems that appear weeks or months after commissioning. This is why power supply issues are among the most misdiagnosed KNX problems worldwide. In this article, we explain what really happens when a KNX power supply is…
Introduction When a KNX system behaves unpredictably, experienced engineers don’t start by blaming software or devices. They start by checking bus voltage and current. Most KNX communication problems are electrical in nature, even though symptoms look like programming errors. Understanding how to measure, interpret, and troubleshoot KNX bus voltage and current is one of the…
The KNX system is one of the most widely adopted standards for building automation, allowing integration of various systems such as lighting, heating, air conditioning (HVAC), security, and energy management. A crucial component of any KNX installation is the power supply, which is responsible for providing the necessary electrical power to the system. In this…
