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Whether batch size 1 or constantly increasing competitive pressure in production - the demands on drive technology are higher than ever. The basic requirements for competitive machine automation are in particular fast reaction times, absolute movement accuracy, intelligent algorithms and maximum productivity. Challenges that the Aerzen-based drive specialist Lenze, thanks to more than 75 years of experience, knows exactly and is happy to take on: with the i750 cabinet multi-axis servo inverter, the company from Lower Saxony now provides the powerful answer for motion control applications. Björn Maltzahn, Product Manager Motion Control at Lenze, comments: "Our new servo inverter represents a consistent evolutionary further development of our portfolio. The i750 masters complex applications and offers mechanical engineering new design scope for future-proof solutions."

Automation is to reach a new level

According to Lenze, the servo inverter scores points in the application due to its maximum precision and dynamics. Its outstanding control performance opens up the possibility for operators to increase the cycle rates of their machines by up to 20 percent. In addition, the auto-tuning function in combination with a Lenze controller makes users' work easier right from the commissioning stage and improves the machine's efficiency. The i750 product range consists of supply units, single and double axes, which are operated in a DC system. Characteristic features are a narrow overall width and extensive integrated safety technology. The units can be used universally in the power range from 1.1 to 15 kilowatts for single axles and from 1.1 to 7.5 kilowatts for double axles. Between 22 and 110 kilowatts, the i950 cabinet servo inverter functions as a power extension.

Indispensable for sophisticated automation systems

In addition to efficiency and precision, the new servo inverter is particularly impressive due to its easy integration into Lenze control systems, as Maltzahn explains: "The i750 offers all the advantages of an open EtherCAT CiA402 interface and is used in centrally controlled system architectures. It unfolds its full potential in conjunction with Lenze controllers, which makes it an indispensable element for sophisticated automation systems. Users benefit from both maximum accuracy and higher throughput." Predefined and tested software modules in the Lenze FAST application software toolbox significantly reduce development and commissioning times thanks to the product philosophy of 'parameterising instead of programming'.

Single-cable technology throughout saves installation effort

The i750 servo inverter series supports the operation of motors with single-cable technology (OCT) across the entire power range. Maltzahn also sees this as a major plus point: "Single-cable technology saves users more than half the installation effort and at the same time gains valuable space in their control cabinet." The use of single-cable technology is possible thanks to the open motor feedback protocol HIPERFACE DSL. Lenze motors and geared motors in single-cable technology are the MCS and m850 motor series, which are equipped with high-resolution HIPERFACE DSL encoders. This means that the i750 servo inverter provides a complete drive system for highly dynamic applications.

A safe choice for the future

Lenze's development team also focused strongly on the new functional safety of the servo inverter. Its integrated safety functions cover a wide range of safety-relevant machine applications. The device fulfils the safety requirements up to Safety Integrity Level 3 (SIL 3) or Performance Level e (PL e). Extended safety functions such as Safely-limited speed (SLS), Safe direction (SDI) and Safely-limited position (SLP) provide even more extensive options for safeguarding machine functions. Maltzahn sums up: "Whether safety, precision or performance: with our new servo inverter and the matching product portfolio, machine builders and operators are able to meet any requirements that drive technology has in store."