Need specific pinouts or GSD files for your set? Always verify the exact hardware revision (HM, HT, or HS) against the Noellen-SICK compatibility matrix to ensure proper function.
This article provides an in-depth analysis of the WALS (Wireless Absolute Linear Sensor) system, focusing specifically on the configuration and application of as defined by Noellen (now part of the SICK Group). Whether you are troubleshooting a positioning error or designing a new material handling system, understanding these five sets is non-negotiable. What is WALS? A Brief Primer Before dissecting the sets, we must understand the platform. WALS stands for Wireless Absolute Linear Sensor . Unlike traditional laser or encoder-based systems, WALS uses non-contact, inductive technology. A primary loop (the "reader") travels along a secondary loop (the "code rail"). Because it is inductive, it is immune to dust, light, grease, and condensation—common enemies in steel mills or food processing plants. WALS Noellen Sets 1 5
The "Noellen" brand (originally Hans Turck GmbH & Co. KG, later acquired by SICK) perfected this technology for linear positioning up to 1,000 meters. The "Sets 1 5" refer to the specific parameterization or physical coding configurations used to define the resolution, measuring range, and data protocol of the WALS system. When technicians reference "WALS Noellen Sets 1 5," they are typically referring to the five standard operational modes or hardware configurations available for the WALS HM (High Mobility) series. Need specific pinouts or GSD files for your set