In drawing machine of straight into the control variable frequency speed regulation with configuration concise, clear logic and the characteristics of cost reduction, and at the same time this paper also introduces in detail the TL - MD320 frequency converter in the application of wire drawing machine. keywords Drawing machine of straight into the synchronous frequency conversion control metal products is an important part in the metallurgical industry, but in the industry in China is a weak link, old mechanical and electrical equipment, hindered the development of industry. In metal processing, straight into the type wire drawing machine is a common, usually before the dc generator - electric units (F - D system), now with the progress of technology and the popularity of the inverter frequency conversion control began in drawing machine of straight into a large number of use, and can be realized through PLC drawing varieties setting, automatic operation, production process control, real-time closed-loop control, automatic meter, etc. Using variable frequency speed regulation system of drawing machine of straight into advanced technology, energy-saving significantly, speed range in normal work for spake, at the same time