SD600T Tension Control VFD for Winding Applications (e.g., Paper Rolling)

SD600T achieves tension control by controlling the output frequency or torque, regardless of whether the VFD is equipped with an encoder to form a speed closed-loop. 

Torque control is the process of controlling the output torque of a motor, with the frequency automatically adjusted based on the material speed of the equipment.

1. Precise Tension Regulation

Maintains stable tension during winding, unwinding, or material transport, ensuring consistent product quality.

2. Built-in Torque/Tension Control Modes

Supports open-loop and closed-loop tension control, including dancer arm, load cell, or calculated tension methods.

3. Smooth Speed Adjustment

Automatically adjusts motor speed based on material diameter or line speed, preventing tension spikes.

4. Real-Time Feedback Support

Interfaces with tension sensors (e.g., load cell, analog input) for dynamic, responsive control.

5. Multi-stage Tension Curve Programming

Allows customized tension control at different process stages (e.g., start, acceleration, deceleration, stop).

6. High Stability and Fast Response

Optimized PID and vector algorithms ensure quick response to tension changes without oscillation.