U4 Open Loop Controller Support

Common Questions

Can this be used for unwind or rewind?
Can this be used with a drive?
What is the Least/Most tension I can control?
What is the fastest/slowest I can go?
When would I use an open loop controller?
What types of sensors can I use with this controller?
Does this controller control tension?
Does this controller display tension?

Can this be used for unwind or rewind?

Yes, it includes features for both Rewind and unwind applications.

Can this be used with a drive?

Yes, it can be be used in any torque controlled application.

What is the Least/Most tension I can control?

Light tension is limited to the torque device being controlled as well as mechanical limitations of the machine, not the controller.

What is the fastest/slowest I can go?

Fast or Slow speeds both have unique issues that may require specific characteristics of one particular model or another. Please consult one of our application specialists. Contact Us

When would I use an open loop controller?

Applications that are intermittent, such as die cutting and applications that cannot allow both sides of the web to be touched by rollers.

What types of sensors can I use with this controller?

Ultra-Sonic Sensors, Proximity Switches, Laser Sensors, & Rider Arms.

Does this controller control tension?

While it does not directly control tension, by varying the torque proportionally to diameter, the accuracy of maintaining constant tension is only limited by the linearity of the torque device.

Does this controller display tension?

Not at this time.