British Sugar Cantley has specified variable speed drives from Control Techniques for their new beet finisher drum, with associated high pressure spraywater pump. Unidrive SP drives from Control Techniques, ranging from 3 kW up to 250 kW were selected for all of the key motor control operations, an investment in excess of 1 million by British Sugar.
The new plant provides thorough cleaning of the beet at the start of the process, reducing the amount of sand, dirt and stones entering the processing line, cutting damage from abrasion and reducing general wear and tear further down the line.
Control Techniques is our drive of choice for a number of reasons, they give us increased reliability, compared with other drive systems says Graham Goodrum, Electrical Engineering Team Leader at British Sugar Cantley. We find the drives easy to use we particularly like the SmartCards that cut parameter set-up times. They are ultra-reliable, reducing our maintenance costs and, very important for such a safetyconscious site, they include a safe torque off function. The applications modules allow direct communications with the rest of the plant and, on some applications, such as the beet finisher, there is a huge start-up torque and the Control Techniques drives give more than 180% start-up current to get it moving. The closed loop vector mode gives us positive, accurate feedback of machine speed, so that we can be confident that everything is operating within safety limits.
The upgraded Maguin beet washing plant comprises a rotary drum driven by two variable speed electric motors, a high pressure spray water pump, a new stone catcher and a sand screen.
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