light industry

1. Overview
CNC lathe, also known as the CNC lathe, that is, the computer digital control lathe, is currently the most widely used, the most extensive coverage of a CNC machine tools, accounting for about 25% of the total number of CNC machine tools. CNC machine is a set of mechanical, electrical, hydraulic, pneumatic, micro electronics and information technology, such as a number of mechanical and electrical products. The technical level of the numerical control machine tools and the percentage of the production and the total amount of the metal cutting machine tool is one of the important symbols to measure the national economic development and the overall level of the industrial manufacturing. With the development of science and technology, the application of AC frequency conversion in the spindle drive, to better meet the spindle of the lathe to control the low frequency and high frequency control.
Keywords: CNC CNC inverter cutting

Two. System requirements
CNC lathe processing range, different processing of the workpiece, different processes, using different tools, need to perform parts with different speeds, inverter with in the drive spindle motor, spindle motor through the transmission mechanism drives the main shaft to rotate, and the inverter control required for spindle speed
System requirements:
1, excellent low frequency torque characteristics;
2, excellent speed control accuracy, good weak magnetic control;
3, the torque response speed, current fluctuation is small, the machine noise is small;
4, high level of protection, greatly improve the reliability of the inverter in the extreme environment;

Three. System solutions

parameter list

Function code	parameter values	Function name
P0-02		Command source selection
P0-03		Dominant frequency source selection
P0-10	50~320	Maximum frequency
P0-12	320	Upper frequency
P0-17	0S~65000S	Acceleration time
P0-18	0S~65000S	Deceleration time
P1-01	0.1KW~1000KW	Motor rated power
P1-04	0.01HZ~ maximum frequency	Rated frequency of motor
P1-05	1rpm~65535rpm	Motor rated speed

Four. Program features

      ECF500 with its excellent performance and high cost performance, in the application of CNC machine tools, can completely replace the imported inverter, using modular design, low temperature rise, low noise, reliable performance, compact layout. The random carrier function can effectively reduce the noise of the motor and suppress the interference of the inverter to the external equipment.