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Solution > Converting > HNC VFD for Winder and Unwinder
HNC VFD for Winder and Unwinder
Application Description– Center Winder/Unwinder is widely used in converting industry such as paper, foil, film and corrugated board etc.– Winds material around a core or mandrel– The coil is driven by a motor.

Application Description

   Center Winder/Unwinder is widely used in converting industry such as paper, foil, film and corrugated board etc.
   Winds material around a core or mandrel
   The coil is driven by a motor
   The motor can be operated in torque or speed controlled mode
   Speed and torque are diameter dependent
    Dancers or load cells for tension control are optional(closed loop tension control)
Technology Requirement
   300~2000m/min line speed
–  ±1% tension control tolerance
   Fast stop possible
   Web break detection
   Precise diameter calculation
   Torque pre-control and moment of inertia adaption
System Diagram
Customer Benefit
   Closed-loop tension control integrated in the drive
   Dynamic response to make sure the tension changed
   Winder and unwinder function implemented by drive






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