31 www.drivesncontrols.com January 2026 of all packaging sold in the country – the equivalent of 900 million small PET bottles and 2.5 billion cans annually. Z-conveyors Expanding the Dutch scheme required extensive modifications to the existing recycling infrastructure. Updates were made to the software to enhance the system’s database, and the equipment behind the packaging machines was modified. Some retailers dealt with the increased volume by compacting PET bottles and cans. However, for those using pairs of reverse vending machines (RVMs) sideby-side, a system known as Zconveyor became essential. This moves uncompressed beverage containers, such as PET bottles and cans, into large storage bags. Initially designed to manage smaller volumes (mainly PET bottles), the Z-conveyor faced challenges with the expanded deposit system, which resulted in a much higher volume of cans. The original system was not equipped to handle this surge, risking potential bottlenecks and operational delays. Drives Tomra had to adapt its Zconveyor to handle the increased volumes of both PET bottles and cans, allowing retailers to cope with the expanded intake without disruption. Tomra consulted Duursma, a Dutch wholesaler known for its expertise in variable-speed drives, and services such as maintenance, assembly and support. Duursma replaced the Zconveyors’ original single-phase motors with three-phase machines, combined with Nidec Control Techniques’ Commander S Micro AC variable-speed drives, enabling smooth motor control, and making it possible to switch the conveyor motors on and off in a controlled manner, thus preventing high starting currents and overheating. This approach allowed the old motors to be replaced without needing the entire machine to be returned to the manufacturer. The VSDs’ offline programming capability meant that technicians could arrive on-site with a pre-set configuration, thus simplifying installation. Once the new motor had been mounted, only four parameters had to be set on the VSD to get it up and running. Tomra’s choice of the Commander S drive wasn’t just about functionality – it aligned with the company’s commitment to sustainability and durability. The drive has a sleek design that minimises its carbon footprint, while offering easy access to its terminal blocks. A click-on/clickoff DIN-rail mounting system simplifies installation. The Commander S was the first frequency inverter to come with wireless communications using NFC (Near Field Communications) as standard. Unlike Bluetooth or Wi-Fi, NFC provides faster, more stable, and energy-efficient connections up to 10cm, ensuring secure communications. NFC is already widely used in smartphones for tasks such as payments. App The VSDs also come with an app that allows technicians to commission, monitor and diagnose the drive wirelessly. The app simplifies tasks such as copying and transferring settings between controllers. This is a particular benefit when retrofitting a large number of machines. Any Tomra mechanic, regardless of their expertise, can install and program the drives easily with the help of the app. The process of upgrading Tomra’s Z-conveyors across the Netherlands to the new frequency-controlled three-phase motors is well underway. The company can now offer an efficient way of helping collection points to comply with latest regulations. This allows Tomra to maintain its pivotal role in the circular economy, making it easier for consumers to return their empty drinks containers, and to contribute to a sustainable future. n CLICK GO WIRE, CLICK, COMMAND ASEASYA DERS AS sales@lamonde.com | www.lamon +44 (0)20 3026 2670 Quality Products: Expert A Lamonde Automation Lim nde com Advice mited
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