AC 800M High Intergrity Controller
The AC 800M HI offers a SIL3 TÜV certified control environment for combining safety and business critical process control in one controller without sacrificing safety integrity. When configured as a SIL1-2 system, the AC800M HI is realized in a 1oo1D structure by combining application execution in the PM865 with diagnostic and monitoring functions in the SM811/SM810. When configured as a SIL3 system, the AC800M HI is realized in a 1oo2D structure by executing application in both PM865 and SM811.
For embedded safety and control applications, all functions/types in standard libraries usable in SIL classified application are marked SIL2, SIL2 Restricted, SIL3 or SIL3 restricted. Embedded safety measures prevent inadvertant degradation of safety applications. SIL selection activates the relevant restrictions and limitations, such as only SIL marked elements to be used in SIL applications.
In SIL rated applications,it is possible to choose between three IEC 61131-3 languages, Function Block Diagram, Structured Text, and Sequential Function Chart (only SIL1-2). For non-SIL applications, all five IEC 61131-3 languages are available for use.