Product line

Positioning and control systems


The iDiscovery is a powerful SIL 3 and EN 81-20/50 compliant safety supervisor unit. In conjunction with CEDES’ APS (Absolute Positioning System), it takes over safety-relevant functions of the elevator.

It also includes enhanced inspection functions for elevators with reduced headroom or pit (EN 81-21). The system features a pure electronic overspeed governor to trip an electrically activated safety gear.

This highly integrated system eliminates many of the individual systems and components currently required for a conventional elevator. Combined with APS, iDiscovery significantly reduces elevator cost and complexity, as well as  installation and maintenance time.

The configuration of safety-relevant parameters is performed with configuration clips that are mounted with the APS code tape. This allows to configure the safety parameters of the device in the field on the job site. The configuration can also be changed in the field. The use of the configuration clips in combination with the floor indicator clips allows for a fully automated teach process. 


  • Door monitoring
  • Leveling, re-leveling and preliminary operation with open doors
  • Detection of unintended car movement (UCM)
    - Door zone speed-monitoring
    - Monitoring that door zone of target floor is not left with open doors
  • Overspeed detection with different speed limits
  • Retardation control / ETSL
  • Final limit switches
  • Bridging of door contacts for maintenance (BYPASS)
  • Check if door contacts are faulty (bridged)
  • Safety gear monitoring
  • Inspection limit switches
  • Extended inspection limit switches
    - Additional limit switch according to EN 81-21
    - Pre trigger in case working space according to EN81-20 has been activated
  • Safety spaces in case of reduced headroom and/or pit
    - Reduced top/bottom clearances according to EN 81-21
    - Working space according to EN 81-20


  • Simplifies the hoistway by replacing many individual systems and components
  • Easy configuration in the field on job site without the need of any tool/computer
  • Automated and straightforward teach process
  • Large operating range offers high flexibility in mounting variations
  • Easily integrated into elevator control system; communication via CANopen DS417 protocol
  • Contactless and robust positioning system is operating wear-free as well as noiseless


  • Significantly reduced complexity
  • Significantly reduced time of
    - integration
    - installation
    - teaching
    - maintenance
  • Significantly reduced material and labor costs of your installation



Info sheet

TÜV certificate



Statement Lars Kollmorgen - Kollmorgen GmbH
Statement Stuart Davidson - Lester Controls
Statement Christian-Erik Thöny - CEO CEDES Group
Statement Mirsada - Head of SMD-Testing - CEDES AG
Statement Marcial Lendi - Head of iDiscovery Engineering - CEDES AG
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