10/22/2014 3:59 PM | |
Posts: 2661 Rating: (279)
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See chapter 16 in the following manual: http://support.automation.siemens.com/WW/view/en/82478488 |
10/23/2014 4:47 PM | |
Posts: 5 Rating: (0) |
Thanks Phantom for your reply Is it the same for the fail safe system? |
10/23/2014 5:25 PM | |
Joined: 9/27/2006 Last visit: 9/24/2024 Posts: 12282 Rating: (2685) |
Hello H. Tahoon; The purpose of a fail-safe system is very different than that of a fault-tolerant (redundant)system. It is designed to save lives and preventinjuries, by detecting unsafesituations and being able to place a system in a safe state when such situations occur (e-stops for example). Fali-safe systems (F-systems, in Siemens mnemonics) can be setup as part of a fault-tolerant (H-system). You would then be able to setup what is known as a S7-400FH system, combining the purposes of both systems in a pair of redundant controllers ith fail-safe IOs and functions. More information is available in the following manual: SIMATIC Industrial Software Safety Engineering in SIMATIC S7 Hope this helps, Daniel Chartier |
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