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22/05/2009
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New drives from ABB include a range designed for the water and wastewater sector, new units with full IP66 protection for machine applications, and OEM drive modules and adapters.
 ABB's water industry drives cobver from 1.1 to 400 kW at 380 to 480V, for single and parallel pumps systems. Built-in intelligent pump controls cover flow calculations, soft-start pipe filling (for smooth start and over-pressure avoidance) and sleep and boost (which runs pumps to boost pressure prior to shutdown).
They also feature pump reverse cleaning, level control (for storage tanks) and pump balancing. ABB reckons the drives can result in 50% energy and pollution savings.
Meanwhile, the new machinery drives are hygienic-designed and protected to IP66/67 and even the German 69K standard (against water and dust ingress, as well as high pressure washing and cleaning chemicals).
They are rated 4, 7.5 and 22kW, three-phase 200V ac, and have die cast aluminium chassis, with GRP cover and smooth slanting surfaces to drain liquid. Also, the heat sink's cooling fins are open from top to bottom, allowing easy washing, and the drive features an optional maintenance switch for fast shutdown and safety.
ABB makes the point that, since these drives are totally enclosed, the cost of cabinets and associated sealing glands, gaskets and wiring are eliminated.
Finally, ABB's next generation customisable drives, for OEMs and panel builders, are based on narrow, compact, plug-in modules for cabinet or DIN rail mounting.
Applications include extruders, cranes, mixers, pumps and fans in the power range 1.1 to 400kW, from 380 to 480 V, requiring IP20 protection. Features include: diagnostics; 24V dc backup; removable memory (holding all set-up data to ease commissioning); built-in fiedbus adapters and a user interface showing energy and CO2 saving.
The company points to: DTC (direct torque control), for handling rapid load changes; STO (safe torque off); ultra-flexible programming; and a 'changed parameter list' feature for trouble-shooting. There is also a statistical load analyser to assist with continuous improvement.
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Author
Brian Tinham
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