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System Architecture for SIL1, SIL2, SIL3 systems
System Architecture for SIL1, SIL2, SIL3 systems

Can anybody advise on the system architecture for SIL1, SIL2, SIL3 systems? How about the hardware? Any redundancy for the DI, DO, AI, AO, PI, PO or specific wiring/hardware configuration to be done to achieve the said SILs level?

Any engineering standards for reference? Iappreciate the advice. Thank you.