HOME COMPANY PRODUCTS SERVICE MEDIA CONTACTS DOWNLOADS POSTED IN PRODUCTS WEB TENSION CONTROL SYSTEMS Systems for the web tension control in closed-loop system or open-loop system. They keep constant the desired web tension, avoiding the possibility of material breakings in any phase of web processing. load cells READ MORE amplifier READ MORE control panel READ MORE transducer READ MORE tension control box READ MORE The production of high quality laminates requires a precise detection and control of the tension of a web. The more influent parameter is the tension of the material, for this reason it’s necessary to have a tension regulator that ensures a correct and constant value during the whole working process. The integrated web tension control systems operate an accurate monitoring of the parameters variations and send the correct input to the brake. In this way the brake can adjust the torque to get the desired web tension, improving the control in open-loop system or close-loop regulation systems. Open-loop regulation systems use an ultrasonic sensor that detects the diameter of the roll by emitting an ultrasonic pulse towards the reel and reading the reflected signal. The roll diameter data are sent from the sensor to the control panel (tension controller). The tension controller receives the information and forward it to the brake through the emission of an automatic signal. In case of pneumatic brake, an electropneumatic converter is necessary to convert the electronic signal into a compressed air signal for the brake. Instead, in case of magnetic powder brake, a power supply module can replace the control panel. Finally the brake (or motor) adjusts the torque (or rpm if a motor) in order to obtain the web tension required. Closed-loop regulation systems use instead load cells (or dancer roller), which detect the web tension and send an input signal to the control panel. The control panel compares the web tension detected by the load cells with the “set point” and send the input to the brake (or motor). In case of pneumatic brake, an electropneumatic converter is necessary to convert the electronic signal into a compressed air signal for the brake. Finally the brake (or motor) adjusts the torque (or rpm if a motor) in order to obtain the web tension required. The web tension control systems are ideal for such sectors as corrugated, converting, paper, printing, plastic film, labels, aluminum, etc. INTEGRATED SYSTEMS FOR THE WEB TENSION CONTROL AND REGULATION. Renova offers a wide range of integrated systems for the web tension regulation in open-loop tension or close-loop systems which stand out for their maximum accuracy, linearity, user-friendliness, precision and flexibility. On unwinders, Renova’s control systems are ideal with our pneumatic brakes or magnetic powder brakes. Sensorex loads cells, the Reset ampliefer, the Isomatic control panel, the Ep converter transducer, keep constant the desired web tension, avoiding the possibility of material breakings in any phase of web processing. Renova also provides integrated systems for the tension control like the power supply module AL PWX 5A with microprocessor and current-controlled output for a precise control of the braking torque, regardless of the temperature of the brake. The non-contact inductive angular sensor SAX 360 with programmable angle of measuring and the ultrasonic sensor USX 500 with programmable measurement field complete the Renova’s control systems range. RENOVA SRL - VIALE RIMEMBRANZE 93 - 20099 SESTO SAN GIOVANNI (MILANO) - P.IVA 03759670965 - NUMERO REA: 1699970 COPYRIGHT © Using this website you agree to use use cookies; we use cookies to ensure that we give you the best experience on our website. ok learn more