Tension Control 101: Closed Loop PID Control - Dover Flexo Electronics ...

A closed-loop electronic control system can provide far greater accuracy and repeatability than a manual open-loop system. In a closed-loop control system, we replace the operator's judgment and intuition about how much to adjust a tensioning device's output with an electronic controller's control algorithm.

PDF Microsoft Word - THE MECHANICS OF TENSION CONTROL.doc

Closed loop controls are very accurate because they actually measure tension in the web and control a drive to keep tension constant relative to a set point. Unfortunately, closed loop control can lack stability when controlling unwind and rewind tension zones because they do not know distance (roll build) and have to control large ratios in a ...

What is Web Tension Control? Systems & Concepts Explained - Montalvo

Roll defects (telescoping, starring, etc.) 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. Tension Controllers automatically regulate this torque, making any necessary correction or adjustments, throughout the process, allowing for continuous production.

Why Use a Closed-loop Tension Control System for Precise Tension ...

To sum up, through continuously monitoring and adjusting tension in real-time, closed-Loop tension control systems address the challenges associated with maintaining consistent tension and contribute to improved product quality and operational efficiency. As industries continue to demand higher precision and automation, closed-loop tension control will remain a key technology for maintaining ...

Open-Loop vs Closed-Loop Tension Control - Dover Flexo Electronics, Inc ...

One of the only drawbacks to closed-loop tension control systems is that their sophisticated designs and requirements for direct tension measurement (from tension transducers or load cells) make them a bit more costly than open-loop controllers.

Closed-Loop vs. Open-Loop Tension Control Systems - How to Choose the ...

Tension control systems, which manage the force applied to a material as it is processed, are classified into two main types: closed-loop and open-loop. This article provides a detailed comparison between closed-loop and open-loop tension control systems, highlighting their key characteristics, benefits, limitations and optimal use cases.

Tension control products for industrial motion control - Nexen Group

Nexen's Tension Controller line is a closed-loop, load cell-based tension control product that uses torque to control the tension of paper, film, foil, or fabric in all zones of web processing machines. Nexen's products use an adaptive control algorithm to adjust internal gain values, resulting in a simple system with the inherent robustness of more complicated systems that rely on many ...

What is a Closed-Loop Tension Control System | ChatsLine

A closed-loop tension control system is a sophisticated approach to maintaining consistent tension in various industrial processes, such as in printing, packaging, textile manufacturing, and converting operations.

Introduction to Closed-Loop Tension Control Methods in Winding Machines

Effective tension control systems ensure that the tension remains within a narrow range, reducing the risk of over or under-tensioning that can lead to defects.Closed-loop tension control refers to systems that continuously monitor the tension of the material and adjust the braking or drive forces in real-time to maintain a stable tension level.

Open vs Closed-Loop Tension Control for Unwind or Rewind Applications

Tension tolerance values for a well-designed and well-maintained closed-loop system are on the order of 2-5% tension variability or better. Closed loop systems also make it easier to change the tension setpoint to repeatable levels for different materials and web widths.