Eltex UPG yarn break sensor

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Eltex UPG yarn break sensor

The UPG is a small, general purpose, thread break sensor. 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.

The sensor has an optocoupler output suitable for PLC or other electronic control devices. A LED (light emitting diode) indicates the yarn movement. The ceramic sensor part can be used either as a closed eyelet or as an open bar. Several sensors can be connected in parallel.

When it is not possible to connect the Eltex sensors G3s, EVG-s or UPG directly to the machine control (PLC), the Eltex FlexiHub can instead be used.

Features

The output reflects the movement of the yarn. When the yarn is moving, the optocoupler is inactive. When the yarn is not moving, the optocoupler is active. The LED is on when the yarn is moving. The sensor is supplied with cable and a 6/4 modular plug connector. Many thread sensors can be connected in parallel. The sensor is protected against wrong polarity on power supply.

Leaflets & info

Manuals

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
Reaction time 150 ms
Cable length
16720 0.5 m
16730 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 yarn is not moving.
Sensitivity setting The sensitivity can be adjusted with a potentiometer under the lid.

Application examples

Winders
Spinning machines
Twisters
Texturing machines
Sewing machines
Covering machines
Yarn preparation machines
Double/multiple picks on airjet weaving machines

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