Sensor module 16470 Series

Eltex weft break sensor 16470 with logic current output General description Designed for use mainly on weaving machines. The 16470 weft break sensor is working on the piezoelectrical principle. The yarn movement is transferred into an electrical signal, which is amplified and evaluated within the sensor. The signal giver has a logic current output. A green light emitting diode indicates when a yarn is moving. Function and description Output: The sensor will send one current unit as output, if a yarn is moving in the eyelet. Sensitivity setting either through a DC voltage 0–6.5 V from the central control unit, or through a potentiometer on the sensor. To set the sensitivity, turn the potentiometer clockwise to the end position (maximum sensitivity). Let the machine run and turn the potentiometer slowly anti-clockwise until the weft stop motion stops the machine with the weft yarn present. Then turn the potentiometer approx. 45° clockwise. If there are still false stops, increase the setting by another 20°. The weft (yarn) movement is best detected, if the weft (yarn) deflection is 10–15° through the eyelet. For monitoring more wefts, it is possible to connect two or more sensors of this type in parallel to one central control unit.