Precise tension control is vital to any web or strip fed operation, the product must be fed under tension, processed under tension and wound up again under tension. Tension controllers are an integral part in maintaining this set tension. Nexen tension controllers range from simple systems with diameter feedback (open loop), to dancer control systems, and the highest precision systems using web tension sensor feedback (closed loop).
Closed Loop Tension Controllers
Closed Loop Tension Control Systems use load cells to measure the actual tension in the web. They tend to be 1-2% accurate.
Open Loop Tension Controllers
Open Loop Tension Controllers estimate web tension by measuring the roll diameter, RPM, or a combination of both. Tension accuracy tends to be in the 5-10% range. Typically used with less tension sensitive processes.