n TECHNOLOGY January 2025 www.drivesncontrols.com 14 LENZE HAS UNVEILED an integrated motor-drive system which, it claims, achieves energy efficiencies to IE5 and IE7 levels, and can cut motor losses by up to 60%. The system, which delivers 300% overload torque, combines Lenze’s m550/m650 permanent magnet synchronous motors, g500 gearboxes and i550 and i650 variable-speed drives. It is said to be as easy to use as an asynchronous motor. Lenze is offering the system with the m550 motor for applications from 0.25-11kW, and the m650 version for more dynamic applications from 0.75-22kW. Both can be combined with Lenze modular gearboxes in helical, angular or bevel formats. The system does not need sensors, even in dynamic applications. This cuts costs because there are no encoders, feedback systems or sensor cables. Mounting and installation are also quick and safe, contributing to system reliability. If the motor is controlled by a decentralised VSD, there is even less need for hardware, because braking resistors are unnecessary. A regenerative capability built into the motec drives feeds any braking energy back into the mains. Lenze’s i500 cabinet-based drives can exchange excess energy via the DC network, making it available to other axes. The company expects the new motor-drive system to open up new applications in intralogistics, and in sectors such as textiles, packaging and material processing. It sees the VSDcontrolled synchronised control as a cost-effective alternative to more expensive servodrives, with added reliability because of its low complexity. Lenze reports that it has had good feedback from pilot users. “Our customers are primarily interested in lower energy costs and reducing their carbon footprint,” says Lenze’s electromechanics product manager, Klaus Dierkes. “This is a very big issue, especially in logistics, and we can deliver this with the m550. Reality shows that the new motor-drive system can reduce motor losses by up to 60%. This is achieved by a newly designed permanent magnet synchronous motor. What's more, the motors are the same size or smaller than comparable IE2/IE3. “We promise a 300% overload torque from a standstill and we deliver it,” he adds. “The start at full load from standstill is achieved without any problems. The beverage industry, the textile industry and, above all, intralogistics benefit from this. This means that the system can be sized more precisely for continuous operation, as it is not oversized, and then immediately delivers the required power. “Efficiency and usabilty are crucial for our customers,” Dierkes reports. Users only need to enter one parameter to set the motor data on the drive. “There is no encoder, therefore less wiring, no adjustments and fewer components.” A SLSM (sensorless synchronous motor control) algorithm built into the drives can achieve performance similar to closed-control loop, without needing a motor feedback system and its cabling. “This allows us to realise sensorless and precise positioning,” says Dierkes. It can help to position goods in materialhandling applications. www.lenze.com BECKHOFF HAS ANNOUNCED a technology that monitors the health of servomotors in real time with minimal effort. The Beckhoff Smart System Diagnosis (B/SSD) technology measures vibration, humidity and temperature directly in the motor and uses this as the basis for predictive maintenance, and for statistical evaluation using Beckhoff’s TwinCat Analytics software. The technology – available as an option for Beckhoff’s AM8000, AM8300, AM8500, AM8700 and AM8800 servomotors – will allow any necessary action to be taken in a timely manner to ensure efficient operation and to maximise uptime. B/SSD uses Beckhoff’s One Cable Technology (OCT), eliminating the need for additional sensors and their cables, and reducing the overall need for wiring. By integrating with TwinCAT Analytics, B/SSD allows live data and historical data to be recorded, visualised and processed into information that can be used to optimise machines. Vibration measurements can be performed as average values (RMS), as well as peak values (peak-to-peak) or statistically (Kurtosis) up to ±50g. www.beckhoff.com Smart diagnostics built into servodrives will cut maintenance and downtime costs Integrated motor-drive is claimed to reach efficiencies of up to ‘IE7’ Lenze says that its integrated motor will operate with efficiencies up to the “IE7” level
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