Thread break detector UPG series

LEDpiezoelectricpotentiometer

Eltex UPG-Stitch Thread break sensor for sewing machines. The UPG-Stitch is a thread break sensor designed to be used on sewing machines. It checks that the thread is moving in stitches. Both no thread movement and continuous thread movement will result in an active output. It operates on the piezoelectric principle, detecting the yarn movement. This working principle makes it suitable for all types of yarns and insensitive to dust, dirt and humidity variations. It has an optocoupler output suitable for PLC or other electronic control devices. A LED (light emitting diode) indicates the thread movement. The ceramic sensor part can be used either as a closed eyelet or as an open bar. Several sensors can also be connected in parallel. With its small size it doesn’t require much space on the machine. Technical Specifications: Housing in zinc metal Power supply 15–30 V DC Current consumption 20 mA Output: Max. switching current 10 mA Max. voltage drop 2 V Speed range 600 – 10 000 rpm Cable length 16750 0.5 m 16760 3.5 m Cable connector 6/4 modular plug connector Function description: Sensing part Aluminium oxide ceramic, with a Ø3 mm closed eyelet and a 7 mm wide bar. Output Optocoupler, active when the thread is not moving correctly. Sensitivity setting The sensitivity can be adjusted with a potentiometer under the lid. The output reflects the movement of the thread. When the thread is moving correctly, the optocoupler is inactive. When the thread is not moving or moving continuously the optocoupler is active. The LED is on when the thread is moving correctly. It is flashing steady when the thread is not moving.