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Two lines at SCA’s Trafford Park paper mill in Manchester, UK, have been updated with AC drives supplied by Control Techniques.

The facility produces a range of household paper products utilising recycled paper. Two lines — one for toilet tissue and the other for kitchen towels — needed upgrading to enhance reliability, product throughput and accuracy.

Both lines are now equipped with Unidrive SP AC drives — the tissue line with 26 and the paper-towel line with 16. The drives range in size from 1.1kW to 20kW.

The drives on the tissue line provide functions including position control, control of the belt height for the parent roll and tracking and unwind and rewind control. The drives on the paper-towel line control unwinding and rewinding, the insertion of a new core into the log, the synchro bar to cut the log into sections, the diameter of the log and the sheet length.

Key benefits of product application

  • Paul Heywood, who is responsible for keeping the lines working day and night at the paper mill, said his team has been impressed with the reliability and performance of the AC drives; the drives are enabling both lines to meet production targets.
  • A key factor in SCA’s decision to choose the Unidrive systems was the high level of support provided by Control Techniques.
  • Heywood’s team was able to install and commission all of the drives thanks to the information it received from Control Techniques’ Unidrive SP training course.
  • The drives can be configured to operate in several modes, including servo, and comes with a wide range of system integration features; each drive can accept three option modules, allowing the user to select the level of integrated automation/motion control, connectivity and I/O needed.

Control Techniques

Control Techniques, an Emerson Industrial Automation company, is a world leader in the design, production and marketing of electronic variable speed drives for the control of electric motors. Our strategy is to concentrate on delivering drives and servo products that enhance the productivity of our customers’ machines and processes.

We operate through a global network of drive and application centres that both distribute product and add value by building our drive products into custom designed systems and by offering the highest levels of customer service.

Our Control Techniques drive centres also provide us with invaluable feedback and market intelligence so that we can further improve our products and service. This customer focused strategy will enable us to continue to grow profitably.

Our competitive edge is based on our unique focus on drives, our strength in research and development, our investment low-cost manufacturing and an effective worldwide marketing strategy.

Emerson Industrial Automation, a business of Emerson, is a global technology provider that enables productivity, efficiency and quality gains for customers across a spectrum of industries. Our products include alternators, electric motors and drives, electrical distribution devices and mechanical power transmission, fluid automation and ultrasonic joining solutions. Visit our website for more details.

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