Yarn Break Sensors Weft Sensor with logic current output

General description
Designed for use mainly on weaving machines. The 16470 weft breaksensor is working on the piezoelectrical principle. The yarn movementis transferred into an electrical signal, which is amplified and evaluatedwithin the sensor. The signal giver has a logic current output.
A green light emitting diode indicates when a yarn is moving.

Function and description

Eyelet diameter        see table
Power supply            24 V DC (16–28 V DC)
Current consumption max 30 mA

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  otentiometer 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.

Models
Art. no.   Eyelet                     Cable          Potentiometer       Other characteristics
16470    Normal,   ∅6 mm     0.75 m         no
16471     Normal,  ∅6 mm     0.50 m         No                         The cover has no DC connection to ground.
16474    Interchangeable      0.75 m        Yes  
               eyelet ∅6 mm
16475    Normal, ∅6 mm        0.75 m        Yes
16476    Normal, ∅6 mm        0.50 m        No                        The cover has no DC connection to ground.
                                                                                                       5-pole DIN m   ale connector. Anti-vibration pad.
16477    Normal, ∅6 mm        5.50 m        No                         The cover has no DC connection to ground. Anti-vibration pad.
16478    Normal, ∅6 mm       0.75 m         No                         Anti-vibration pad.
16576      ∅9 mm                  1.50 m         No                         Anti-vibration pad.
16578      ∅9 mm                  0.75 m         No                         Anti-vibration pad.

Connection
Colour Function
Red Power supply: 24 V DC.
Grey Output: one current unit when the yarn is moving.
Blue Sensitivity (Gain): DC voltage supplied by the central control unit. 0 V for minimum sensitivity,
6.5 V for maximum sensitivity. The blue wire is not used, if the weft sensor has a gain
potentiometer.

Black Ground connection.