Lenze is one of the world's leading manufacturers of electromechanical transmission products. Products include: DC speed regulation, AC inverter, AC servo, various motors, small transmissions, various reducers, transmissions, brakes, clutches, etc. It is the first manufacturer to apply frequency conversion technology to the development of AC speed control system, and built the first automatic frequency converter production line in Europe in the 90s of the 20th century. Modern large-scale production methods and perfect service guarantee make Lenze win the trust of users from all walks of life. In the design and manufacture of frequency converters, Lenze has always followed the principle of universality, openness, and openness. The principle of flexibility. The complete product system, reasonable grade matching, and strong universality make Lenze inverter factory widely used in textile, papermaking, printing, packaging, metallurgy, logistics, chemical industry, automobile and other industrial fields.
Due to the special working conditions of the metallurgical industry, higher and more special technical requirements are also put forward for the performance of the inverter.
First of all, the working environment of the metallurgical industry has a lot of conductive dust, high working environment temperature and corrosive gas. The 93EV engineering vector inverter developed by LENZE has good insulation and a dense protective coating on the surface of the circuit board (the coating substance is patented by Lenze), which can effectively protect the erosion and damage of water vapor, corrosive gas, conductive dust and other inverter motherboards, and ensure that the inverter can work stably in harsh environments. In terms of installation method, there are three forms: conventional rail mounting, radiator push-out mounting, and cold plate mounting. If the cold plate is used, the heat dissipation needs can be guaranteed, and the protection level of the control cabinet can be maintained at the same time. The flexible installation method can adapt to various environmental and temperature requirements.
Secondly, when used in the open loop, it can output the rated torque to meet the lifting requirements. The 93EV inverter adopts advanced vector control algorithm, fast control speed (current loop control cycle: 62.5us speed loop control accuracy
250us), with the function of motor self-identification, and establish a perfect motor model internally, so as to ensure that the rated torque can be output to meet the needs of the lifting torque in the case of open loop. Super overload capacity: the motor can withstand 150% overload within 60 seconds with the same power, of which the 0.37-90kW inverter can withstand 180% overload, so that the inverter can adapt to the load of large starting torque. In addition, the 93EV inverter integrates a mechanical brake control function, which can provide perfect protection measures for lifting applications and avoid the occurrence of "slippery hook" phenomenon. At the same time, it reduces the difficulty of the designer's work.
Due to the frequent start and stop of high-power equipment at the metallurgical work site, the fluctuation of power supply voltage is relatively large. The wide voltage input range of the 93EV drives (3x320-528VAC) enables the drives to avoid the effects of voltage fluctuations in the metallurgical industry.
In field application, the walking of the overhead crane brings large vibrations. The internal circuit board of the 93EV inverter is connected with double-row pins, which can adapt to the large vibration on site without loose cables.
The 93EV inverter also has the following features:
Open DC bus design: make the power supply mode and braking mode of the inverter more flexible. Switching between electric and braking is even faster. Users can connect LENZE drives through open DC buses to provide a unified power supply/braking module, which can save costs, and at the same time, the power generated by some motors can be used to other motors to reduce the waste of electric energy.
Rich communication functions: The built-in CAN bus interface can communicate with other controllers and inverters. It can also be expanded via a communication module. SUPPORTED PROTOCOLS INCLUDE RS232/485, INTERBUS, INTERBUS-LOOP, PROFIBUS-DP, CAN, DEVICENET, LON, etc.
Complete system monitoring measures: built-in PTC function, temperature monitoring of the motor, and monitoring of power supply, DC bus, communication and other data of the motor, timely provision of alarm information, convenient for users to diagnose faults.
Free function block programming function: more than 60 kinds of more than 100-part function blocks are integrated inside, and users can freely program according to process needs.
A variety of typical applications are integrated inside: reciprocating control, torque control, lifting brake control, step control, speed synchronization control, winding control, etc. This enables the upper controller to simplify programming and reduce operational tasks
Burden.
Abundant interfaces: CAN bus, digital analog input and output, encoder feedback interface, and digital frequency bus interface are all integrated on the front panel as standard interfaces. The pluggable terminal design allows the user to reduce the process and time of wiring during maintenance.
Modular design: flexible installation, space-saving, and can effectively reduce the work intensity and cost of system installation.
User-friendly programming environment: The GDC software on the Windows interface allows users to program easily and monitor the parameters to optimize the control characteristics.
Convenient parameter copy and transfer function: users can use the computer or operation panel to easily transfer parameters, read and write parameters in accordance with the international standard: CE VDE UL DIN
Because of these advantages, Lenze has an undisputed market share of 70% in the field of metallurgical equipment in Austria, and the cooperation with voestalpine, a well-known supplier of metallurgical equipment in Austria, enables Lenze products to be used in various metallurgical equipment and exported to all over the world. In Zibo Shandong Aluminum Co., Ltd., our frequency converters are also in application.
By using Lenze frequency converters, it is possible to optimize production in the metallurgical industry, minimize losses, increase system reliability and ensure product quality.
Typical applications of frequency converters in the metallurgical industry are as follows:
mill
Wire rod mill
Process the line
Coiler
Fans
Slurry pumps
Since its establishment, Lenze has always been at the forefront of the development of transmission technology, and its product design concept and technical level have always been in the leading position in the industry. Modern large-scale production methods and exquisite manufacturing processes have created Lenze transmission products with excellent characteristics. Sophisticated product quality and perfect service make Lenze win the trust of users from all walks of life.
Over the years, Lenze has accumulated a wealth of experience in the application of industrial drive technology, and is good at providing customers with turnkey drive systems on this basis.
With its worldwide service and consulting network, Lenze guarantees a fast and high-quality service to its users.
With high-performance vector control technology and powerful network junction support, the 93EV inverter is widely used in metallurgical machinery, realizing high-precision speed control, torque control, position control, etc.
Lenze inverter hoisting application part of the performanceLenze transmission products in the metallurgical industry: Application in the metallurgical industry: copper casting unit, wire drawing production line.
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