Drives help a Danish company keep production at home
16 March 2014
BogensePlast is a Danish company that has demonstrated how its approach to energy efficiency has helped it become more competitive and, as a result, keep production in Denmark.
BogensePlast team manager, Freddy Søby checks one of the Danfoss 55kW VLT drives
BogensePlast produces plastic components for use in products that range from machine parts to household name designer products. Energy efficiency has long been a top priority for the company, which employs 75 people, and is seen as a decisive factor in keeping costs down and staying competitive in a global market.
Following a strategic review of its operations, the company decided that an investment in motor drives would, in part, help it achieve these aims. BogensePlast duly invested in eight 30-55kW Danfoss VLT Automation Drives, which are installed to control motors in various parts of its factory, including those serving the injection-moulding machines and water chillers.
This strategy, combined with other energy-efficient practices employed around the factory, has resulted in a 40 percent overall reduction in energy consumption, corresponding to annual savings of approximately 53,600 euros. BogensePlast's technical director, Per GrunddalJørgensen takes up the story:
“It comes naturally in the plastics industry to focus on energy savings, because all processes depend on electricity to heat the plastic, to operate the machines and to transport materials,” he says, suggesting that keeping a green focus not only means cutting the energy bill – but also securing more contracts. “Increasingly, our global customers are demanding that we focus on energy optimisation and the environment. Many of them have a green profile, and as they outsource their competences to sub-suppliers, they are beginning to send these demands about energy optimisation on down the supply chain.”
According to GrunddalJørgensen, Danfoss was the natural choice when the company decided to invest in frequency converters. “Danfoss delivers good service, which is incredibly important to u," he says. "In addition, the company offers product support that we can use to get answers to our queries - that’s great.”
The payback time of the eight VLT frequency converters is expected to be around two years. In addition to energy savings, they have also reduced the consumption of cooling oil in the machines, and, equally, machine wear has been reduced, because they are no longer are exposed to constant high-pressure loads. Meanwhile, maintenance costs have also dropped and the noise level has been reduced, which results in a better working environment for the staff.
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