《P+F安全栅应用指南》.pdf

Engineer’s Guide Section 9 Hazardous Safe Area, Div 2 or Zone 2 Product info. on Area pgs. 301, 309 Practical Solutions Z787.* Safe Intrinsic safety barriers are the core of Pepperl+Fuchs product Plus portfolio. We offer the widest selection of products for protection of electrical signals located in hazardous (explosive) areas. This guide presents common hazardous area applications involving intrinsic safety barriers to assist in selecting the correct barrier for your application. By far, our most popular intrinsic safety barrier is the flexible, DIN rail mounted K-System isolator. This product line consists of over 150 different functional designs to meet the demands of today’s factory and process automation industries. The unique Figure 9.1 design allows simple expansion with no additional wires, and can be easily designed for several redundant power configurations. This illustrates an alternate method of providing mutlitple channels K-System components meet SIL IEC61508 ratings to ensure in a “quasi-floating” configuration. The first channel of the Z787.* conformity to international safety standards for systems and (or Z787.H.*) is used as the field power supply while each diode pro