Web Tension Controller

Control That Delivers Consistency, Speed, and Quality

Inconsistent tension causes product defects, material waste, and costly downtime. That’s why manufacturers across industries choose the Web Tension Controller by Puretronics—a high-precision system built to maintain stable tension during unwinding, winding, or intermediate web handling processes.

Whether you're working with film, paper, foil, fabric, wire, or battery separator material, our controller helps you maintain quality, reduce scrap, and run faster with fewer stops. It’s a smart, flexible, and reliable solution that fits right into your existing workflow.

Key Features
  • Real-Time PID Control

    Automatically adjusts motor, brake or dance behavior to maintain exact web tension during process variations.

  • Microprocessor-Based Feedback System

    Continuously monitors tension data to prevent stretching, slack, or breakage.

  • Integrated Load Cell Input

    Accepts direct feedback from tension sensors for closed-loop precision.

  • Dual Analog I/O (0–10V)

    Allows seamless integration with drives, motors, and PLCs.

  • External Start Function

    Synchronizes easily with automation sequences or operator triggers.

  • User-Friendly Touch screen display

    Resistive touch screen display for easy maneuvering over the menus to do setting.

  • Material Flexibility

    Works with film, foil, paper, wire, textiles, and more without recalibration.

Technical Specifications
Power Supply 24Vdc ± 10%
User Interface Colour LCD with Touchscreen, Keys and LED indications
Strain gauge 2 Channels
Sensitivity 2mV/V
Bridge Supply 5V Bridge Supply
Analog input
Dancer 0 to 10VDC
Line speed 0 to 10VDC
Diameter 0 to 10VDC
Analog output
Magnetic Break (PWM) PWM current output 0 to 4A/24VDC
Pneumatic Brake (E to P) 0 to 10V/0 to 20mA/4 to 20mA
Tension output (F – actual) 0 to 10V
Digital input
Auto/Stop +8V to 24VDC
Break - release +8V to 24VDC
Emergency stop +8V to 24VDC
Digital output
RL1 (Web break) 24VDC/0.5A
RL2 (F - target alarm) 24VDC/0.5A
Interface 100Mbits Ethernet
RS485 Modbus
Operating Temperature 10°C to 50°C
Dimensions [ W x H x D ] 130 x 155 x 106 mm
Available Accessories
  • Load Cells / Tension Sensors

    Provide live tension data for the controller to process and adjust in real time.

  • Wiring Harness and Mounting Kit

    For simplified installation on machines or control panels.

  • Shielded Signal Cables

    Help maintain signal integrity in industrial environments.

  • Communication Add-ons (Optional)

    Modules available for RS485 and ethernet output for enhanced system integration.

  • Protective Housing

    Dustproof enclosures available for challenging work conditions.

Application Areas

Puretronics Web Tension Controller is designed to work seamlessly across various manufacturing sectors where material tension is critical to quality and efficiency:

Film & Flexible Packaging

  • Maintains smooth feeding and accurate registration for films like BOPP, PET, LDPE.

  • Prevents defects like wrinkles, edge misalignment, and breaks during high-speed runs.

Paper & Printing

  • Keeps paper tension stable during slitting, printing, laminating, and rewinding.

  • Minimizes tear-outs and ensures clean edge finishes even with coated or sensitive stocks.

Foil Processing

  • Controls the delicate balance needed for aluminum and laminated foils.

  • Reduces chances of folding, scoring, or material sticking due to excess tension.

Textiles & non-Wovens

  • Enables distortion-free feeding and winding of elastic, mesh, or woven fabric.

  • Useful in garment production, hygiene goods, and technical textiles.

Wire & Cable

  • Prevents wire stretching, tangling, or insulation failure during payout and coiling.

  • Ensures even layering and prevents deformation during fast operations.

Battery Separators

  • Handles ultra-thin separator films used in lithium-ion batteries without stretching.

  • Enhance layer consistency is critical to battery safety and performance.

Use Case Examples
  • Film Printing and processing: By integrating this controller into a packaging film line, one converter reduced edge defects by 35% and gained smoother roll profiles.

  • Paper Printing: By integrating this controller into a packaging film line, one converter reduced edge defects by 35% and gained smoother roll profiles.

  • Textile Winding: A fabric manufacturer running synthetic elastic reduced reject rates caused by tension inconsistencies resulting in better quality and fewer reworks.

Benefits
  • Improves Product Quality
    Achieve consistent tension that leads to cleaner cuts, better prints, and fewer surface flaws.

  • Reduces Downtime
    Automatic tension control minimizes operator interventions and emergency stops.

  • Minimizes Waste
    Less tearing, wrinkling, and roll rejection means more usable product from every run.

  • Easy to Operate
    Simple interface and preset tuning make it ideal for both experienced operators and first-time users.

  • Compatible with Modern & Legacy Systems
    Works with both analog systems and programmable logic controls, making it suitable for new or retrofit installations.

Frequently Asked Questions (FAQs)
Yes. With standard analog input/output and load cell support, it works with most existing systems.
Not at all. It also handles tension for textiles, wires, battery separator films, foils, and more.
No. The controller has onboard PID logic and real-time feedback processing—no external PLC required for basic tension control.
Setup is user-friendly with step-by-step configuration on the touch screen interface. Calibration is straightforward and requires no coding.
Yes, it is designed to manage tension across unwind stands, rewinders, and intermediate zones.
Take control of your tension. Eliminate waste. Improve throughput.

With Puretronics Web Tension Controller, you gain more than accuracy, you gain confidence in every roll, every meter, every shift.

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