Drives & Controls Magazine June 2023

TECHNOLOGY n LENZE HAS ANNOUNCED a multi-axis servo inverter which, it says, will allow users to increase cycle rates of their machines by up to 20%. It adds that the i750 cabinet inverter is suitable for almost any dynamic multi-axis application. The i750 product family consists of power supply modules and single and double axes, operated in a DC network. It spans the 1.1– 15kW power range for single axes, and 1.1– 7.5kW for double axes. Lenze’s i950 inverters can extend power ratings from 22–110kW. The inverter is designed for easy integration with Lenze control systems. When used in this way, auto-tuning simplifies commissioning and improves machine efficiency. “The i750 offers all the advantages of an open EtherCat CiA402 interface and is used in centrally controlled system architectures,” explains Lenze’s motion control product manager, Björn Maltzahn. “Its full potential becomes apparent in conjunction with the Lenze controls, making it an indispensable element in sophisticated automation systems. Users benefit from both maximum accuracy and higher throughput.” The inverter supports one-cable technology (OCT) for motors of all sizes. The OCT is based on the Hiperface DSL open motor feedback protocol. Lenze’s MCS and m850 motors and geared motors are equipped with high-resolution Hiperface encoders and, when used with the i750, form complete drive systems for highly dynamic applications. Maltzahn believes OCT will be a crucial advantage for the new inverters. “One-cable technology saves users more than half the installation effort as well as valuable space in their control cabinets,” he says. The drives meet safety requirements up to SIL 3 / PL e. Extended safety functions include safe-limited speed (SLS), safe direction (SDI) and safe-limited position (SLP). Development and commissioning times can be reduced by using predefined and tested software modules in Lenze’s Fast Application Software Toolbox, which is based on the philosophy of “parameterising instead of programming”. “Our new servo inverter represents an evolutionary development of our portfolio,” Maltzahn concludes. “Whether it is safety, precision or performance, our new servo inverter and the corresponding product portfolio will give mechanical engineers and machine operators all the tools they need to meet any demands for drive technology.” www.lenze.com Multi-axis servo inverter can boost cycle rates by ‘up to 20%’ Lenze says its i750 servo inverter is suitable for almost any dynamic multi-axis application

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