I. Introduction

 

With the continuous development of urbanization in China and the continuous increase of urban population, urban sewage treatment has become more and more serious, and the demand for cement sewer pipes is also increasing; especially during the recent rainy season in the south, I believe many My friend Youdao felt that the current urban drainage capacity is insufficient. The rolling machine I want to talk about in this case is a kind of equipment for producing cement pipes. It can produce cement pipes of different diameters, such as 40, 50, 60, 80, 100, 120, 135, 150, 200 cm, etc. The starting current is small, the impact on the equipment is small, and the stepless speed regulation can be realized, and the characteristics of the motor speed and current can be monitored. It satisfies the requirements of customers. This article introduces the application of an easy-drive ED3100 series 75KW frequency converter on the rolling machine. The motor is a 55KW electromagnetic speed regulating motor.

 

Four, summary

 

At the beginning, the motor of the customer's spinning machine was an electromagnetic speed-regulating motor, and the coil of the motor speed-regulating part was short-circuited. Therefore, the customer planned to use the inverter for transformation. The easy-drive ED3100 series inverter satisfies the customer's requirements with its good performance. The digital display and monitoring interface allows customers to adjust the speed through the potentiometer to look intuitive and simple. In addition, the stepless speed regulation function of the inverter meets the customer's requirements for manufacturing different diameters and manufacturing a cement pipe at different times.