7. ATC device
 Recently developped “Auto Tension Control Device"
 * Specifications: 
 Control system: Tension control by road cell and volume control by computer
 Electricity: AC 3? 220~380V
 Control Motor: 5.5Kw~7.5Kw AC Motor & Vector Inverter Control
 Tension control range: 3~100g
 Volume control range: ±1mm 

- ATC is controlled by electronic control system. 
 And it controls wind-up of the beam so identity of all sectional beams of warping set constant same diameter and tension. By ATC the current warping value meets the value of the master beam. Therefore you can get high quality of yarn whose tension is always same, constant the value and the diameter meets master beam during warping.