AC200-T special frequency converter for tension control keeps the tension constant by controlling the output torque and automatically calculating the roll diameter. No need to install a tension sensor, no need for external feedback signal of current position or current tension. In most applications, it is not even necessary to install a speed feedback encoder to accurately provide constant tension and ensure that the thickness or thickness of the processed material is uniform.
1. Using the torque recognition algorithm, the output torque has high precision and small torque ripple. 2. Adopt intelligent roll diameter recognition, with high recognition accuracy and strong anti-disturbance ability. 3. It has strong adaptability to the diameter of rewinding and unwinding reel, smooth starting, and stable tension at high and low speeds. 4. The built-in professional friction compensation module fundamentally ensures that the tension control characteristics of the front and back tension are consistent during material processing.
1. Friction compensation, the tension-specific inverter has dynamic and static friction compensation for the mechanical system, which can optimize the control effect of tension and improve the stability and response speed of the tension system. 2. Zero-speed tension, the special frequency converter for tension can provide the tension value that can be automatically identified and set for the on-site zero-speed state to ensure that the on-site operation and zero-speed require different tension. 3. Other functions, stop and brake signal output, material break detection, rewind/unwind frequency limit, etc.
1. Taper coefficient, tension-specific inverters are aimed at the occasions where the tension decreases with the increase of the coil diameter. The taper coefficient can be set to realize the flatness of the winding to achieve better forming effects. 2. Automatic roll change, the tension-specific inverter has a wealth of automatic roll change functions, which can realize automatic roll change without stopping at high speed, which greatly improves production efficiency.
The V in the upper head represents the linear velocity of the traction, W represents the angular velocity of the winding reel, R represents the winding radius, and D represents the winding diameter.
AC200T tension control special frequency converter can obtain accurate winding diameter through the linear speed of the previous stage, its own angular speed, and the mechanical speed ratio.
According to the thickness of the material, the number of rotations of the installation reel is accumulated to obtain the material reel diameter. AC200T tension control special frequency converter accumulates the number of turns of the reel through the encoder, to obtain the diameter of the winding, without adding external proximity switches and several turns of devices.
Speed rigidity: Sudden 100% load and sudden unload at 40Hz, the recovery time is within 10ms.
Torque response: The load is not mechanically locked. The AC200T given torque is suddenly increased from 0% to 100% and suddenly reduced from 100% to 0%, and the torque response time is within 10ms.
Linear speed method application: the front-end machinery provides material traction to determine the material linear speed, and the material tension is determined by AC200T winding. The coil diameter can be calculated by the given linear speed of the traction.
Thickness method application: The front end machine does not provide a traction mechanism to determine the line speed, the material line speed is directly determined by the front motor, and the material tension is determined by the AC200T winding. The winding diameter of this scheme can be calculated by the lap counting pulse provided by the encoder, or an external lap counting device can be added.
Applications：Industrial production requires strip or wire to maintain constant tension.
