December 3, 2021

Contactless Data and Power Transmission Now Replacing Slip Rings in Rotating Applications

The data volumes transmitted by rotating systems in industrial facilities are steadily growing. Users’ expectations are also increasing – not only regarding performance and transmission quality, but also where the reliability of machines is concerned. In many cases, independently of the rotational speeds involved, they need to be able to operate reliably 24/7 without any interruptions.

Failsafe Transmission of Data and Power

Slip rings began approaching their limits long ago, but you can continue to rely on contactless rotary transmitters from SPINNER – whether you only need to transfer data or power or both. Contactless transmitters are especially valuable in applications involving large diameters, high data transfer volumes, and long maintenance intervals.

The new compact transmission systems now available from SPINNER brilliantly combine proven contactless data transfer on real-time bus systems with power transmission up to 750W, while still leaving space inside the central axis for device-specific connections to the rotating unit.

Here’s an overview of the features

Data transfer

  • EtherCat (Beckhoff)
  • Profinet Class A,B, and C ( Real Time IRT) – Siemens and Phoenix Contact
  • Powerlink (B&R)
  • Bluecom (Bachmann)
  • Sercos III (Bosch)
  • DriveCliq (Siemens)
  • … and various others.

Overview of power transmission specifications

  • Input/output voltage: 24V or 48V
  • Max. transmittable power: 24V/50W, 48V//24V/300W, 48V/750W
  • Controlled output voltage with low ripple
  • Clear inside diameter in 50W version: 100mm, in 300W version: 20mm, in 750W version: 50mm
  • Max. rotational speed: 300rpm (in special versions up to 3000rpm)
  • Operation independent of rotational speed and direction of rotation
  • Highly efficient

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Contact with SPINNER

SPINNER GmbH
Erzgiessereistr. 33 | 80335 Munich | Germany | Phone +49 (89) 12601-0