Thread break detector EVG-S series

electronicpiezoelectric

EVG-s yarn break sensors EVG-s yarn break sensors are designed for general purpose use. They are robust, with a metal housing. The piezoelectric principle is used to detect the yarn movement. This working principle makes them suitable for all types of yarn and makes them insensitive to dust, dirt and humidity variations. Each sensor has a double modular connector, so they can easily be connected in parallel. The sensors can be used with a PLC or many other electronic devices like relays, I/O modules, etc. Technical Specifications: Housing: in zinc metal Power supply: 17–30 V DC smoothed ripple. NB! The negative supply must be connected to earth ground to provide proper shielding. Current consumption: Max. 15 mA Output: Optocoupler output: The optocoupler is open (off) when the sensor is on and the yarn is moving and also when the sensor is off. The optocoupler is closed (on) when the sensor is on and the yarn is not moving. Max. load on output: 50 mA Reaction time: 120 ms Sensors connected together Not more than 70 sensors should be connected in one chain. For larger applications the Eltex EYE System is recommended. Function description: The sensing eyelet is made of aluminium oxide ceramic. The output reflects the movement of the yarn. At power-on, sensing is automatically on. The sensors can be switched off by the touch button or via a terminal in the connector. When switched off, the sensors will automatically resume sensing when yarn movement is detected continuously for seven seconds.