With our new E3S-DC colour mark sensors and E3NX-CA colour-sensing fibre-optic amplifiers, stable and reliable detection of colour marks on the increasingly diverse range of packaging materials used in the food and beverage industries can now be easily achieved.
These innovative sensors provide stable detection of colour marks even in challenging applications, such as those where the marks are printed on glossy or brightly colour materials, and those where there are only subtle colour differences between the mark and the background. This helps users to maximise the productivity of their production plant, as downtime associated with unreliable sensing is eliminated.
The super high dynamic functionality featured by our new sensors means that only a simple setting is required to detect differences between marks and background printed on glossy materials, including aluminium vapour deposition film. This functionality is complemented by a low noise, high signal/noise ratio light-receiving system that reliably detects subtle differences between the closely similar colours often used in today’s colourful packaging.
A further benefit of the new sensors is that they can transmit detailed RGB colour information to a host device such as a programmable controller (PLC), making trouble shooting easier and reducing downtime. The E3S-DC uses IO Link for this functionality, while the E3NX-CA uses EtherCAT.
This also means, for example, that a database containing details of colour variations between different lots of packaging materials can be maintained in the host device so that the sensor can be automatically adjusted to compensate for lot variations. This eliminates the risk of detection errors and unnecessary plant shutdowns when changing lots and it has a direct benefit to the customer as the production increase due the reduction in time in changeover for a format change.