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  • Web tension controllers and load cells from the Double E Company
Web Tension Controllers

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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. The unit can be used stand-alone with color TP HMI or integrated into the user's logic system.

Open Loop Torque Controller

The Double E controller uses a distance measurement sensor to monitor roll diameter as the roll unwinds.  The controller compares values registered by the diameter sensor with set values then signals the brake or unwind drive to adjust accordingly.
 
Closed Loop Unwind Controller

The controller uses a dancer roll system or load cells to directly sense web activity.  This signal is then compared to a setpoint, and through a PID loop, provides real time feedback to an unwind brake or drive to correct for any variations in tension.
 
Closed Loop Unwind Controller with Inertia Compensation

The controller operates as described above in closed loop mode, but also uses a diameter input to measure the diameter (and effectively the mass) of the unwinding roll.  The roll size value is used to adapt the PID loop as well as the output signal when the roll is accelerating or decelerating for optimal system response at any roll size.
 
Intermediate Tension Zone Controller

The controller is connected to load cells or a dancer in the middle of a web process between driven nip or pull rolls.  The controller PID output adjusts the speed difference between the two drives and is either increased or decreased to correct for variations in tension.

Features:

  • One controller style for all applications
  • Easy operator interface color touch screen HMI
  • Simple calibration
  • Optional wired integrated system cabinet
  • Measured tension output signal for secondary display
  • Automatic/Stop mode through remote switch
  • Optional remote tension setpoint through analog input
  • Selectable analog inputs (mV load cells, 0-10V, 4-20mA)
  • Selectable analog outputs (0-10V, 4-20mA)
  • RS232 Modbus serial communication
  • Can be used with Double E load cells or existing load cells
Technical Specifications:

Web Tension Controller technical specifications

Related Files

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    Downloadable PDF brochure of the Double E Tension controller outlining the features, benefits and technical information related to using the unit.

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  • Load Cell Amplifier

    Downloadable PDF brochure of the Double E Load Cell Amplifier outlining the features, benefits and technical information related to using the unit.

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