Product Details Supplier Info More products
Download document:

More information on the Unidrive SP AC drive system - .PDF file.

Control Techniques supplied custom-built drive systems for the renovation of lifts at the Frauenfeld Hospital in Switzerland.

Control Techniques worked alongside AS Aufzüge AG (AS) to renovate a bank of six lifts at Frauenfeld Hospital in Switzerland.

Kantonsspital Frauenfeld — the Frauenfeld regional hospital — is owned by Spital Thurgau AG and has 19 stories, four of which are below ground-level. Its three passenger lifts and three bed lifts are used to quickly transport patients, visitors, heavy beds with equipment and medical personnel.

The new lift systems were built by AS and combined with individual, custom-built drive systems supplied by Control Techniques.

The Unidrive SP AC drive system was used for the six electrically-interconnected systems and utilised a four-quadrant power regenerative mode, rather than brake resistance units that generate heat and waste energy.

Key benefits of product application

  • The upgrade was carried out with minimal disruption to hospital routine.
  • Lift capacity was increased by 30 per cent.
  • The hospital has estimated that the lifts save it €2,700 (£2,349) per annum.
  • The modular design of the system can be disconnected from the mains power supply when not under load.
  • It can be operated independently and without DC intermediate circuit network.
  • The feedback system recycles power via a common DC bus, enabling energy to be returned to the power supply network.
  • Activation of drive commands and position management are displayed on screens in the reception area and the machine room.
  • Activation is transmitted as digital signals and DCP-04 BUS communication to the Unidrive SP drive.
  • Employees are able to reach their destinations directly in batch mode, after which the lift takes its other passengers to each storey selectively.

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.

View full profile