Reliable Weld Immune Sensor in Automotive Welding Lines
Failure to align two or more parts of an assembly in an automated chassis-welding line will result in an expensive piece of scrap. Sometimes it could even cause a damaged robot welding head.
Engineers need presence and position sensors that work with minimal maintenance. The welding spatter is a common challenge that causes rapid sensor degradation. In extreme cases, you should replace sensors that are not sufficiently protected daily. It is a costly and time-consuming activity.
Weld immune sensors to rescue
Sometimes sensors are directly exposed to weld spatter and strong electromagnetic fields. In this case, you can use weld-Immune inductive sensors. All external surfaces of these sensors are protected, preventing spatter accumulation. Also, optional spatter-resistant shrouding prevents cable damage.
Weld-Immune sensors combine the best detection sensitivity with immunity to electromagnetic interference. Robust metal-bodied construction also ensures excellent resistance to mechanical shocks and vibration. Additionally, some weld-immune proximity sensors aim at a technology named ACTIVSTONE®. It is a high-performance ceramic coating that is resistant to welding spatters.
ACTIVSTONE withstands frequent and aggressive cleaning regimes. It causes extending the service life of the sensor.
How IO-Link helps
These sensors provide an industry-standard interface to the machine control system through IO-Link. During initial calibration, each sensor’s configuration is stored on the local IO-Link Master. This allows plug-and-play replacement of sensors. This way there would be no loss of functionality and no need for recalibration.
The weld-Immune family is mounted close to the parts to be welded. Hence, they provide solutions for the toughest weld-related sensing problems.
Are you curious about these sensors? Learn more about it in our article Inductive Proximity Sensor Types.
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