BIS510 - Number one for sheet verification

Pepperl+Fuchs: Sheet verification is becoming an increasingly important task for quality assurance in printing post-production. The BIS510 from Pepperl+Fuchs contains a powerful sensor specially designed for detecting incorrectly fed sheets. Many features, such as fully automatic teach-in of reference images, ensure reliable and convenient sheet verification.

Readers are rightly irritated when they find a page missing from the novel they are reading. However, an incorrect instruction leaflet for medication can be a much more serious problem. To prevent this, it is essential that the correct sheet sequence should be monitored on collating and folding machines. In many cases this is achieved using complex and expensive vision systems. These systems consist of one ore more cameras and a separate control interface and must be set up carefully by specialists in a complex operation.

Pepperl+Fuchs has developed the specialized vision sensor BIS510 for this task, aiming to unite the benefits of vision systems and sensors. The BIS510 is an independent sensor that contains a high-resolution camera and a control interface. As there is no need for a separate control interface, the sensor is smaller and less expensive, making mechanical integration easier.

The vision sensor monitors the sheet sequence on the basis of the print image. The first sheet is automatically “taught-in” and then compared with the subsequent sheets. In an automatic teach-in operation, the image capture parameters are determined in order to ensure the best possible image quality and reliable comparison. The reference image recorded in the teach-in process is permanently stored on the sensor and is not lost even if the sensor is switched off. The subsequent inspection takes place simultaneously in the machine cycle. The sensor receives a trigger signal, e.g. from a diffuse mode sensor and returns it as a switching signal, if the current sheet corresponds to the taught-in pattern.

The sensor can implement sheet verification at maximum speeds of up to 4 m/s and 10 sheets/s and is therefore perfectly equipped to cope with future post-press machines. Because of the high resolution of 752 * 480 pixels, the vision sensor can detect even small differences in the print image.

As well as the image comparison feature, the BIS510 also allows the sheet to be compared through the reading of 1D and even 2D (optional) code. The vision sensor can read both horizontal and vertical codes.

Thanks to its optimized illumination, the BIS510 guarantees reliable reading, even on reflective surfaces.

The BIS510 is adjusted using the Vision Configurator operator interface. With the Vision Configurator, Pepperl+Fuchs offers a uniform and convenient operator interface for all camera-based code readers. This means that there is no need to learn a new interface or to re-install the existing operator interface when changing the sensor.

The BIS510 has tried-and-tested M12 connectors and can be integrated in the machine’s control unit with ease by means of an Ethernet connection.

Thanks to its powerful performance, the BIS510 can be used in all in common collating, folding and binding machines.