SPRY347 June   2022

 

  1.   At a glance
  2.   Authors
  3.   3
  4.   Introduction
  5.   Functional safety requirements for industrial robots
    1.     ISO 13849 in factory automation
    2.     ISO 10218 in industrial robots
  6.   Designing functional safety architectures for industrial robots
    1.     Dual external safety controllers
    2.     Single integrated safety controller
    3.     Dual integrated safety controllers
  7.   Processor-level integration for industrial robots
  8.   Making certification easier
    1.     Documentation support
    2.     Software support
  9.   Summary
  10.   References

Dual integrated safety controllers

Figure 3 illustrates the highest level of integration where safety channel 1 integrates into the central compute processor and safety channel 2 integrates into the communication processor. No additional external controller is needed for functional safety. This level of integration saves additional printed circuit board (PCB) space and external component cost. An example implementation for this highly-integrated robot controller architecture with TI processors as shown in Figure 4.

GUID-20220519-SS0I-299F-NJ4B-M6LXWZHJSJ5V-low.jpg Figure 3 Dual integrated safety controllers.
GUID-20220519-SS0I-TLZD-1DFB-FPDS2BPKKJ4L-low.jpg Figure 4 Integrated robot controller architecture with TI processors.