Radio controlled safety system UH 6900 – In pair operation

The safety approved, bidirectional radio controlled safety system UH 6900 from the SAFEMASTER W series, is for the transmission of safety inputs such as E-stop and conventional control functions and offers great flexibility for the protection of hazardous areas. By implementing the latest radio controlled technologies, a high degree of availability, a wide range, and safety is achieved. Two safety zones can easily be connected wirelessly over a considerable distance. The main application areas include applications covering large areas and mobile applications such as fully automated conveyor systems and driverless transport systems. Simple and inexpensive retrofitting of existing safety systems can also be achieved wirelessly with this system.

The device allows connection of up to 3 two-channel safety transmitters (E-stop, LC, safety gate, two-hand, etc.), simple configuration, and comprehensive sampling and diagnostic options.

With the radio controlled safety system from DOLD, you will have an automated safety solution that can be integrated wirelessly into various applications. The option to select between three operating modes (complete protected mode, cross mode, protected mode with connectable ratio control) allows the device to be quickly and reliably adapted to your individual application.

Advantages and customer benefit: 


  • For safety applications up to Cat. 4 / PL e or SIL 3, TÜV certified
  • Safety approved, bidirectional E-stop transmission
  • High online availability with long range (up to 800m)
  • Quick start, fast set-up procedure
  • Reliable data transmission with superior interference suppression
  • Comprehensive error indication and diagnostics
  • Two channel safety inputs/outputs
  • control inputs / outputs
  • Integrated analysis of existing on-site radio networks

Technical features:

  • Complies with:
    • Performance Level (PL) e and category 4 according to EN ISO 13849-1
    • SIL Limit (SIL CL) 3 according to IEC/EN 62061
    • Safety Integrity Level (SIL) 3 according to IEC/EN 61508 and IEC/EN 61511
  • Machine directive 2006/42/EC
  • 3 different operating modes selectable
  • Connect 3 two-channel safety functions, depending on operating mode:
    • E-stop
    • safety door
    • 1 start button
    • Two-handed control
  • single safety output with 3 contact paths
  • 8 semiconductor inputs and outputs for control functions
  • Semiconductor outputs to signal radio reception, status display
  • Different frequency ranges possible (433 / 869 MHz)
  • LEDs for status display
  • 45 mm width

Application examples 

The application example shows, safe, wireless protection of automated machinery and systems of large physical size.