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Positioning and control systems


The APS is a contactless absolute positioning system for elevators. It supports speeds of up to 20 m/s and distances of up to 1,500 m. As SIL 3 rated, it can be used for safety-relevant functions.

The contactless, SIL 3-rated, twin IR-camera system on the elevator car continuously reads the APS code tape mounted along the elevator shaft. The position and velocity information of the elevator car is then transmitted to the elevator controller through customer specific interfaces such as CAN. Because the APS code tape can be mounted on guide rails, C-profiles, landing door operators or landing door sills, the APS fits into every elevator configuration, including modernization and retrofitting projects.


  • SIL 3 certified
  • Wear-free, contactless principle
  • Absolute position up to 1,500 m with a resolution of 0.5 mm
  • Velocity up to 20 m/s with a resolution of 0.001 m/s
  • Integrated building compression detection, no additional sensors needed
  • Floor level detection using mounting clips
  • Very robust system due to high light reserve and dual camera readout
  • Robust against smoke and dust
  • CAN, RS485 or customer-specific interfaces available
  • Simple and flexible mounting


  • SIL 3 Absolute positioning system for elevators


Tech. specification for architects, consultants and planners


Info sheet

CE / UKCA certificate

CSA certificate

TÜV certificate


Function of APS
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