Does ABB offer NAMUR enabled DI modules for SIS Controller?
NAMUR Sensors are different than ordinary sensors in way which gives either Open or Close status. NAMUR Sensors: detected at <1.2 mA ON) and not detected at >2.1 mA (OFF), so we can have sensor failure/diagnostics feature in NAMUR enabled Digital Input Module.
Question is does ABB 800xa family offer NAMUR enabled DI modules for High Integrity SIS Controller?
DI880 is not NAMUR Compliant. If your question is based on NAMUR proximity sensor I guess you can use AI880A with loop supervised DI function which has NAMUR compliance. For further details about termination and loop drawings please refer the s800 IO modules termination units document