May 3, 2016 - Businesses consider options ranging from simply adopting best practice in terms of switching off energy sources when not required, to making significant changes to machinery. Maintenance personnel are often the individuals tasked with making the savings. However these teams often come up against the issue of obsolescence, which can make it extremely challenging to find new efficiency opportunities.
When Tech Folien Ltd, based in Liverpool, UK, was faced with this very issue, the company turned to Emerson official partner RJW, who designed and installed a solution which delivered energy savings of over 75%.
Tech Folien is a specialist producer of polycarbonate, polypropylene and other co-extruded blown films, specifically for industries such as packaging, automotive and construction.
The previous motor and drive solutions had been installed on the company’s extruding line for over 15 years. The challenge for maintenance personnel has been the sourcing of spares. Having been out of production for a number of years, parts for the incumbent solution were becoming hard to find. It was also noted that from an energy consumption perspective, the existing solution was highly inefficient. As a result, Tech Folien decided it was time to renew and upgrade.
Once the company had specified its requirements, RJW was able to advise on a solution. It was decided that the Unidrive M701 variable speed drive from Control Techniques and an energy efficient IE4 LSRPM motor from Leroy-Somer (both Emerson Industrial Automation group companies) would provide the optimum solution.
Installed in a cabinet away from the line, the Unidrive M701 sets the speed control parameters of the motor, which itself is installed close to the line in the space vacated by the obsolete combination. The control parameters can be easily programmed via a set of on-board drive macros.
When it came to the installation of the motor, RJW’S engineering expertise and support were vital as the solution had to fit in to the same space occupied by the old product. A custom base plate was machine engineered by RJW for the motor to drop onto. This matched the old footprint, which was critical as installation space was very limited.
Tech Folien had the old solution independently verified by a firm of energy consultants, who in turn also measured the new solution once installation was completed. The difference in energy usage was significant. Measured over a year, the new solution is predicted to deliver savings of over 75% annually in energy costs.
