Plastic extruder principle is a solid plastic at a pressurized condition at a screw rotation extruder heating and melting, plasticizing, through a die into a particular shape and the same cross-sectional shape of the die and a continuous plastics. Most previous extruder drive DC drive or electromagnetic speed control inverter repair, maintenance complexity and cost of the huge former Yueyang drive repair phone, affect the efficiency of the device, which is a low speed precision, low-grade products Yueyang Drive Which is good repair, which are largely influenced the development of the extruder. Because AC inverter technology in China in recent years has been rapid development, but also in the frequency range of frequency control, dynamic response, speed accuracy, low torque, slip compensation, communication, intelligent control, power factor, efficiency, and is easy to use and other aspects of the way the past is unmatched speed, so by the extruder manufacturing enterprises of all ages, in the new extrusion machinery, especially plastic machinery have adopted a high-performance drive, while the original old extruder machine will enter a new round of transformation period. Fault code: OU "OU" is over-voltage error. During operation, the inverter detects the main circuit overvoltage, 200V class: 400V detected when the level exceeds 410VDC: detects more than 820VDC. Measures as follows: ① regenerative capacity is too large (no braking resistor) ◆ need external braking resistor. ◆ Increase the deceleration time. ◆ action to prevent voltage drop stall about 10V (200V to 380V 400V grade level setting is set to 770V) inverter deceleration. ② regeneration process does not move (with braking resistor) ◆ the deceleration in the anti-speed function is set to be invalid. ◆ The automatic deceleration function is set to be invalid. ③ brake option wiring anomaly (with braking resistor), confirm the brake unit, braking resistor is installed correctly. ④ Check the inverter supply voltage exceeds the rated voltage. ⑤ braking resistor selection too (with braking resistor), the replacement of the right and power of the braking resistor resistance. ⑥ damage internal braking transistor inverter, the need to replace the drive. Drive repair sales phone _ Yueyang Ohm Electric (certified) _ miluo drive maintenance provided by Ohm Electric Co., Yueyang City. Yueyang City Ohm Electric Co. (www.yyomdq.com/) Hunan Yueyang, inverters, frequency divider leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . In Yueyang Ohm Electric leadership with the staff warmly welcome all inquiries negotiations to create the ohmic electrical Yueyang a better future.