web tension controller

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September 21, 2016

web tension controller

Tension and Torque Controllers Unwind, Process (Nip), or Rewind. The features like strain gauge based sensors, easy tension calibration and automatic as well as manual tension control make these products a preferred choice of many clients. ABB’s web tension system is the perfect choice for measuring web tension in paper mills or converting applications such as printing, laminating, coating, slipping, sheeting etc. Web Tension Controllers by Double E. Double E offers a variety of web tension control systems available using load cells, dancers, ultrasonic sensors, and amplifiers. So tension control is the process of ensuring your material gets from point A to point B in a uniform and consistent manner without any loss to material quality. If any changes in tension are detected the controller can instantly alter the torque device to maintain set tension. Tension Controllers automatically regulate this torque, making any necessary correction or adjustments, throughout the process, allowing for continuous production. KEW series controls Unwind, Rewind and intermediate web tension automatically. So in a basic sense, by controlling the torque in a uniform manner in relation to the roll, we control tension. In the following drawing, the Closed Loop is made by the following sequence: Brake puts tension on web ! Quality tension control helps to eliminate these scrap producers by creating a uniform and consistent process. Web Tension Control The BXCTRL Web Tension Control is a solid state electronic control that receives a signal from dancer input sensors or two load cells (customer supplied). Web tension controller for sale, LCD display, high precision, multi-function, full digital intelligent automatic tension control, send 0-24VDC control voltage command for magnetic powder clutch/brake. As mentioned, one of the key elements to improved productivity and profitability can be traced to the lack of effective tension control. Proper tension must be maintained to prevent stretching, wrinkling, breaking, or inconsistent print registration of the material during its process. The measuring force is detected via a bi-directional strip to which the strain gauges are applied, as a result of which an analogue measured signal proportional to the web tension is output. The sensor provides a high precision signal with high speed and can be applied in conjunction with magnetic powder brakes, pneumatic brakes, electric motors, etc. As the roll diameter builds, with a fixed torque, tension will decrease as the roll diameter increases. • It is impossible to control your web without proper tension being applied to it. Standard features include auto/ manual, tension on/off, manual setting pot, soft start and mains on/off.Web tension Controller ATC 2000 series is an enclosure which contains the outputs to control motor drive, powder brakes, pneumatic brakes etc. Some terms to familiarize yourself with when buying web tension control products include PID control, microcontroller, tension load cells, load cell amplifiers, and dancer control. And all of this happens automatically. There are three types of tension control: Just as it implies manual control is the process of visually or physically determining if tension is correct, and then making manual adjustments to maintain the desired tension level. T1000 Web Tension Controller T1000 is the first web tension controller to adopt a full touch screen. Mathematically, tension equals torque divided by radius. We can help you with a web tension control system, tension indicators, tensions controllers, as well as rebuild or repair your older Comptrol web tension control products. Web Tension Measurement devices include load cells or a dancer position feedback sensor, that are constantly relaying tension changes directly from the web of material to the tension controller, which regulates the output of the torque device, which may be a … All Rights Reserved. As a roll diameter increases or decreases, torque must be adjusted to maintain tension at the optimal value, or setpoint. Design and function of the controller is optimized for precise tension control. Often we find that due to their manufacturing process or poor tension control, manufacturers are not able to run their material rolls all the way down to the core affecting both productivity and profitability. Montalvo manufactures a wide range of tension controllers that are easy to install, set up and operate with a wide range of features to make your process more productive. Tension control is the process of maintaining a predetermined or set amount of stress or strain on a given material between two points to maintain its desired properties (such as form, appearance, etc) and quality. On the sensor rollers used for web tension control, two load cells are already integrated in the roller body. Web Tension Control - Closed or Open Loop Configurations The Double E Tension controller is a DIN rail mountable controller that is configurable for multiple uses. TC950 can be used to form a closed-loop tension control system. We can replace other transducers / load cells on machines as well, try our web tension control system configurator, to choose a load cell that will work best for you. In the sysem, dual tension signal was sent to the controller, the controller compares the target tension with the actual tension and calculates the output with a build-in PID algorithm, then output a compensating signal to a tensioning device such as a powder brake, clutch or a DC drive to get the accurate control of tension. Web tension control refers to the process of controlling tension while transporting a web. Buying Web Tension Controllers. Actual tension and set tension is displayed on the digital meter. Customers can avail a wide range of Tension Controller from us. The Cleveland-Kidder® WebPro Advanced Digital Web Tension Controller provides closed-loop control with tension transducer (load cell) feedback for a wide range of web tension applications. frequency: 15kHz. This method is also exposed to the subjectivity of different operators, typically resulting in non-uniform results. Closed Loop Tension Control refers to a continuous flow of communication from a web tension measurement device, to a torque controller, to a torque device. It can also output 0-10V voltage signal to control vfd, servo motor or other actuators to perform high-precision tension control on the coil material. Basics of Web Tension Control Summary Presenter: Darrell Whiteside, Sales Channel Manager – Tension Control Maxcess International This presentation is intended to take the mystery out of web tension control. The  TC950 tension controller provide precision tension control for web or strand applications. The Web Tension Controller is an application specific controller designed to provide you with precise Control over winding and unwinding tension control applications for web and strand. Web tension controller DC 62; Product description For use in the paper, film and textile industry ; Simple and fast commissioning of the web tension control ; Variable control structure for different application scenarios: "open loop" and "closed loop" Technical Specifications Signal processing and control are digital, resulting in excellent temperature and long-term stability behavior. Accurate web tension measurement is a prerequisite for keeping the web tension constant within the desired range, during both acceleration and deceleration. Controller compares actual tension to desired tension ! The newest Digital Controller from MEROBEL combines, in a smart and low profile front face enclosure, the most simple user’s interface with the most advanced technical features. T-one is a tension controller specifically designed for the web tension control in closed-loop and combined systems; extreme ease of use and compactness are the main features of the tension controller. Open loop systems are generally less expensive than closed loop systems because you are not utilizing additional products, like load cells. This process often takes place in specific control zones: unwind/payout, process (nip), and rewind/take up, with each having unique tension control requirements. Load Cells measures Tension ! With manual tension control a web is subject to constant up and down spikes as an operator is always playing with correcting the tension. Open Loop Torque Controller controller increases or decreases Position and Diameter Sensors Measure the diameter of the roll and allow your core and full roll alarms to be adjusted to give your operator proper notification before reaching the end of the roll. Narrow Web and Pulley Tension Sensors Tension sensors of the cantilever design measure tension forces in narrow webs, ribbons, filaments, wires, cables and ropes. Tension is the pull or strain put on a web of material that tends to stretch it in the machine direction. Web tension control is used to improve web handling during machine speed changes and to compensate for machine directional variations of the paper. Menu security levels can protect the setting parameters. Load Cells. Just set the desire tension and the controller maintain it by automatically compensating for various roll diameters, speed, web material etc. Overall, installing a web tension controller can decrease the variation of tension significantly. In both closed loop and open loop, tension is managed by the torque applied to the center of the roll from a brake, clutch, or drive. These cantilever narrow web transducers are designed for measuring applications in conjunction with pulleys, sheaves or narrow web measuring rollers. The benefits of a high-quality tension control system include: © 2021 Montalvo Corporation. algorithm, which has been improved in speed and accuracy. controller, the load cells will tell the controller if the desired tension was reached. Maintaining proper tension gets increasingly difficult as roll diameters decrease and changes happen more frequently. Automating the process, creating a continuous process and increasing productivity are all going to rely heavily on proper tension control to ensure consistent and high-quality results. Nexen’s web tension sensors include load cells for measuring the force applied to a sensor roller, roll diameter sensors, and rotary sensors used with dancer systems. So in a basic sense, by controlling the torque in a uniform manner in relation to the roll, we control tension. Function. Double E load cells are designed using a full Wheatstone bridge strain gage mounted to a beam supporting the load cell bearing cup. With a fixed torque in an unwind application, as the roll diameter decreases, the tension applied to the web will increase, and will increase more rapidly as the roll diameter gets closer to core. The SteadyWeb6™ Tension Controller combines a full-featured, automatic, closed-loop tension control unit with the most intuitive user interface ever developed for the web process industries. Our tension controllers are reasonably priced. Load Cell Amplifiers An optimized web tension control system will ensure that the correct tension is maintained for any type of material, at any section of the machine and regardless of speed or process conditions. When installed in place of a standard dead shaft idler roller, the MAGPOWR Tension Sensing Idler Rolls deliver precise web tension measurement. http://www.converteraccessory.comThe Mechanical of Tension Control Tension control and regulation are necessary to keep constant the desired web tension, avoiding the possibility of material breaks in any phase of web … The latest of the tension controls’ family of IBD Wickeltechnik is web@tens, which adds new characteristics such as the compact dimensions and the easiness to use, to the basic functions that have allowed our MW.90.10 to be distributed worldwide. The core of T-one is the P.I.D. Tension Controller, Web Guiding Control System, Magnetic Powder Brake, Magnetic Powder Clutch, Tension Meter, Tension Loadcell, Power Supply, Transducer Company Introduction Wuhan True Engin Technology Development Co., Ltd is located in the coast of South Lake and surrounded by numerous colleges and universities. Accurate and stable tension control ensures the highest product quality and productivity. It adopts 32-bit high-precision AD sampling with 1us sampling time. Posted by Bryon Williams & filed under Article Library, Montalvo News, Web Tension Control Blog. Because tension control is the outmost control loop, the response time is slow compared to that of torque control or speed control. The web must be “in traction” with all machine idler rolls and driven rolls to ensure proper web handling and control. Based on inputs into the controller, the controller uses any detected changes in roll diameter to regulate torque and maintain tension, as opposed to closed loop systems which receive tension feedback directly from the web of material. We like to use the term “set it and forget it” to describe how a high quality tension control system should operate. Available in a full enclosure or panel-mount version, the SteadyWeb5 is an automated closed-loop tension controller that takes input signals from tension transducers (the machine’s web path) and supplies a compensated control signal to a tensioning … Web Tension Controllers Web tension has an important role in the sectors of converting, paper and carton board, aluminium foil, textile, wire and cables. In your current application could you double your speed without sacrificing end product quality? Although not as precise as closed loop systems, open loop systems still provide an automated system of consistent tension control that outperform manual control. This more or less is leaving money on the core, only to end up as scrap. Features: Automatic/Manual tension control; Measured Tension transmission; Reel exchange function; Friendly user interface, easy to use; More cost efficient Tension controls manufacturer Dover Flexo Electronics (DFE) introduces the new, feature-packed SteadyWeb5 Digital Tension Controller.. Our tension controllers are widely demanded in the market for various weighing and measurement purposes. The unit can be used stand-alone with color TP HMI or integrated into the user's logic system. The dual 0-24V/4A outputs can drive the magnetic powder clutch/brake directly. Operators simply input the parameters of the production run (such as speed, tension, etc), press start/run and allow the controller to automatically manage production. These controllers are made in accordance with the set industry norms using the sturdy raw material. Web Tension Measurement devices include load cells or a dancer position feedback sensor, that are constantly relaying tension changes directly from the web of material to the tension controller, which regulates the output of the torque device, which may be a tension brake, clutch, or drive to maintain the desired tension level. This is the feedback. 15k Hz, Dual 0~20 mA, 4~20 mA, PWM Phase- Shifting Output, 0-10V, 4-20 mA, 0-20 mA, which can be directed to a brake or a DC drive, Dual 24V/4A, drive magnetic power brake/clutch, Dual 0-20mA, drive inverter or electric pneumatic converter, 7 Segment LED & Graphic LCD (Dual) Display, Friendly interface, ease to use and configure, LED Indicators: OUT, OUTA, OUTB, COM, AUTO, etc, Bright LED for PV, output, diameter indication, Micro-displacement based tension sensor (signal range: 200mV, Power supply: 5 V DC, Strain gauge based tension sensor (signal range: 20mV, Power supply: 10V DC), Radius detection: Proximity switch or encoder, NPN sgnal, max. Deliver precise web tension control Blog pulleys, sheaves or narrow web measuring.! The unit can be traced to the roll, we control tension transporting... Traction ” with all machine idler rolls and driven rolls to ensure proper web principal! 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