El esf+1 está disponible en dos versiones:

• La versión pro detecta de forma fiable todas las etiquetas estándar con una frecuencia de conmutación máxima de 500 kHz.
• La versión expert, con 200 kHz, es la especialista en etiquetas difíciles de detectar.

Las variantes expert y pro tienen el mismo diseño. Se pueden intercambiar fácilmente entre sí.

Carcasa de plástico de alta tecnología (1)

El plástico especial utilizado ofrece propiedades similares al metal: es ligero y, al mismo tiempo, extremadamente resistente.

Sensor de etiquetas: conector M12 giratorio, Montaje: Borde dispensador izquierdo

Conector M12 giratorio 90°(2)

Permite orientar el cable desde atrás o desde arriba, optimizando el espacio disponible.

Adaptador de montaje para 2 posiciones de instalación (3)

El adaptador asimétrico puede montarse en dos orientaciones, facilitando un posicionamiento óptimo a izquierda o derecha del borde de dispensación.

Sensor de etiquetas: botón de aprendizaje, Montaje: borde de dispensador derecho

Fácil aprendizaje (4)

El Teach-in del material de etiquetado se realiza fácilmente mediante el pulsador.

Fácil limpieza(5)

Las superficies planas del emisor y el receptor evitan diafragmas, nichos o hendiduras donde pueda acumularse suciedad.

Sensor de etiquetas con brazo inferior plano

Brazo de horquilla plano (6)

El diseño ultraplano del brazo inferior permite posicionarlo muy cerca del borde de dispen- sación.

The label sensor esf+1

can reliably detect high-transparency, reflective materials as well as metallised labels and labels of any colour. For thin labels and backing materials, the esf+1 can work at its maximum speed, with a measurement cycle time of ≥ 150 µs.

How the ultrasonic label sensor works

Labels are guided through the fork. An ultrasonic transmitter in the lower leg of the fork beams a fast sequence of pulses through the backing material. The sound pulses cause the backing material to vibrate such that a greatly attenuated sound save is beamed from the opposite side. The receiver in the upper leg of the fork receives this sound wave.

The backing material transmits a different signal level from the label. This signal difference is evaluated by the esf+1. The signal difference between the backing material and the label can be very slight. To ensure a reliable distinction, the esf+1 has to learn the label and backing material.

Functional principle of the label sensor: Backing material with a label provides an attenuated signal level

Teach-in methods for label sensors and splice sensors

1) Dynamic Teach-in of labels

During the Teach-in process, the backing material and its labels are guided through the fork at a constant speed. The esf+1 sensor automatically learns the signal level for the labels and for the gaps between the labels. This is the standard Teach-in for labels.

esf+1 as label sensor

2) Teach-in for splice detection

Web material is generally processed from a roll. The splice to be detected is hidden somewhere in the roll. There is a separate Teach-in method available for this purpose, in which only the sheeting is learned. The esf+1 detects the level difference at the splice and sets its output.

esf+1 as splice sensor

The Teach-in procedure

can optionally be carried out with the button on the top of the housing or with pin 5 on the unit's connector.

With LinkControl

the esf+1 can optionally be parameterised. Measured values can also be shown graphically.

Labels are guided through the fork. The esf+1 reacts to the signal difference between the backing material and the label.

IO-Link and recipe management

esf+1 ultrasonic label and splice sensors have a Push-Pull switching output and support IO-Link in version 1.1.5.

The sensor features an integrated recipe management via IO-Link. Up to 20 different labels with backing material can be learned, and the material parameters can be saved directly in the sensor. In addition, material parameters for splice detection can also be saved in the recipe management, ensuring that material transitions are reliably detected and processed. All saved settings can be accessed at any time. There is no need to Teach-in the materials again.