Profibus System Integration PDF 4.03MB - Schneider Electric

Selecting the cablingIntroductionCompleting a Profibus PA architecture with the proper connection topology requiresthe following:• One or more segments couplers or linking devices between the Profibus DP andthe Profibus PA. These are selected based on the number of instruments toconnect, their consumption characteristics desired speed of the bus.• The selection of junctions boxes, which depends on the environment of theapplication• The possible selection of multi-barriers in the case of an explosive environment.• The selection of cables typesxI/OProfibus DPCouplersDP DPPA PAMasterZone 1Profibus PAJunctions boxesJunctions boxes or multi-barriersxZone 0The diagram above represents a sample topology. Please note that the selections arebased on the type of zone, and must follow fixed rules for that zone.25