Motor drives: Compact and robust drive

The VLT Micro Drive includes a number of features that the manufacturer says provide real, tangible benefits to users in industrial appliance, water and HVAC applications, as well as to OEM machine builders.

05/24/2007


Loves Park, IL —The VLT Micro Drive includes a number of features that the manufacturer, Danfoss Drives , says provide real, tangible benefits to users in industrial appliance, water and HVAC applications, as well as to OEM machine builders. The drive eliminates the need for an external controller, and offers true side-by-side mounting without any de-rating due to its compact book-style design. An Automatic Energy Optimizer function allows the drive to consume less energy while the Automatic Motor Adaptation feature leverages the motor’s full operating potential. Users will also benefit from up to 150% more torque for up to a full minute, eliminating the need for a bigger drive. The unit is a general purpose drive designed for rugged and reliable, out-of-the-box, plug-and-play control of ac motors up to 3 hp.

The company claims that the extremely compact drive provides IP20 protection even without the terminal cover. It is available in cabinet sizes as small as 2.75 in. wide x 6 in. tall x 6 in. deep, and can be commissioned in minutes to perform even complex operations. Approximately 100 parameters can be set to optimize energy efficiency and operation. A “flying start” feature provides more uptime while an electronic thermal relay eliminates the need for external motor protection. A built-in RFI filter saves on cost and space.

The smart logic controller is said to be a simple way to seamlessly integrate the drive and motor for optimum application performance. Users can program the controller to react on virtually any event, often eliminating the need for a PLC. Additional features include built-in ac and dc brake functions that help the drive transform kinetic energy from the application into braking power, intelligent heat management and coated electronics for maximized drive reliability and life, and the ability to copy settings via a local control panel (LCP) to easily set up multiple drives.

VLT Micro Drives are available in single-phase 200– 240 V ac: 0.25 – 2 ho; three-phase 200 – 240 V ac: ⅓ – 2 hp; and three-phase 380 – 480 V ac: 0.5 – 3 hp power range configurations.

C.G. Masi , senior editor
Control Engineering Machine Control eNewsletter





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