Label sensor esf-1: reliably detected.

The label sensor esf-1 from microsonic is equipped with a pnp switching output and a push-pull switching output with IO-Link version 1.1. The compact fork housing can be mounted close to the dispenser edge. The sensor reliably detects the label edge at high web speeds and, with the improved evaluation algorithm, even difficult labels. The ultrasonic sensor does not care whether the labels are metallized, made of film or paper. Changing colors and transparencies do not affect reliable detection in the labeling process. In addition, the sensor can detect splices and splices.

Parallel to the introduction of IO-Link in version 1.1, the label sensor esf-1 has received an improved evaluation algorithm. In the label learning phase, the algorithm more precisely analyzes the transitions between the base material and the label. Some labels can cause so-called overshoots in the area of these transitions. The overshoots depend on the label material and the label thickness. The overshoots are better detected and faded out during the automatic determination of the switching threshold. Labels that were difficult to scan with ultrasound in the past can be easily taught and reliably positioned with the esf-1.

IO-Link is not fast enough for exact positioning of the labels. This is still done in SIO mode. Via the IO-Link interface, the label sensor can be set directly on the controller without having to operate the sensor on site. The sensor has integrated the smart additional function recipe management via IO-Link. For this purpose, the different labels are first taught and the material parameters are stored in the control system. If the label is changed, the operator selects the label type on the control. This writes the label-specific parameters back to the sensor. The setup time is shortened.