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PSR-PS21 датащи(PDF) 13 Page - PHOENIX CONTACT |
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PSR-PS21 датащи(HTML) 13 Page - PHOENIX CONTACT |
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13 / 14 page ![]() PSR-PS21 106253_en_02 PHOENIX CONTACT 13 14 Application examples Key: Applications with the PSR-PS21 14.1 Application example 1 - SIL 2 – Low-demand application – Single-channel control – Diagnostic supply voltage is present Figure 10 Application example 1 - SIL 2 SIS = Safety Instrumented System (safe control) DC = Diagnostic Coverage according to IEC 61508 (line/load diagnostics at DO) DI = Digital input DO = Digital output K1 M 24V L M (N) K1 DO DO DI SIS DC 90% 13 14 ( ) 21 M1 22 ( ) ( ) A1 A2 PSR-PS21 Data for the application example as 1001 structure Equipment type A HFT 0 SIL 2 SFF 81.20 % SD 0 FIT SU 794.1 FIT DD 0 FIT DU 183.8 FIT Total 977.9 FIT MTBF 99 years PFD avg 8.06 x 10 -04 (for T1 = 1 year) |
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