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| 4/20/2011 8:08 PM | |
Joined: 9/27/2006 Last visit: 9/9/2024 Posts: 12282 Rating:
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Hello deepak; Your last request will be the toughest to respect. A "reasonable" price level while asking for full redundancy and SIS protection is difficult to achieve. As they say: Good, Fast, Cheap, choose 2 out of 3. And with Siemens you often do not have the option of cheap,because you are working with the best. Redundancy at harware and software levels imply S7-400H CPUs; an SIS requires S7-F system blocks. H here(as in S7-400H)refers to HotStandby (full redundancy); F (as in S7-F)means Failsafe. So your complete system will be a S7-400FH. So for hardware redundancy you will need (because of your low number of IOs) something like 2 S7-412H CPUs, dual power supplies, redundant Profibus slaves with F-IOs, redundant Ethernet processors (if Modbus-TCP isrequired; you will also need the Open ModbusTCP blocks, which can be made redundant.)... Note: for pricing issues, contact the nearest Siemens representative and ask about the required part numbers" A S7-412H bundle (6ES7400-0HR00-4AB0 ) would include the followingelements which would give you the basic redundant CPU: SIMATIC S7-400H, 412-3H SYSTEM-BUNDLE H-SYSTEM WITH: -2 X MC 1MB RAM, -1 X UR2-H, -2 X PS407 UC120/230V, 10A -4 X SYNC-MODULE 10M -2 X SYNC-CABLE 1M -2 X CPU 412-3H -4 X BACK-UP BATTERIES Look at the Siemens Industry Mall for more info: https://eb.automation.siemens.com/goos/catalog/Pages/ProductData.aspx?nodeID=10041139&catalogRegion=WW&language=en&activetab=product®ionUrl=%2f#B&activetab=product& Of course, the design of the Safety IO (F-IO) still need s to be done. https://eb.automation.siemens.com/goos/catalog/Pages/ProductData.aspx?catalogRegion=WW&language=en®ionUrl=%2f&activetab=product&nodeID=10087404#activetab=product& For the -F blocks, you need the S7-F Blocks license (6ES7833-1CC00-6YX0) SIMATIC S7, S7 F SYSTEMS RT LICENSE COPY LICENSE F.1 INSTALLATION PER AS; REFERENCE-HW:SIMATIC S7-400H CPU412H/414H/417H There are many manuals you would need to look at if you decide to go this route and understand all you need for this system. here are a few: SIMATIC Fault-tolerant Systems S7-400H SIMATIC Industrial Software S7 F/FH Systems - Configuring and Programming SIMATIC Distributed I/O System Fail-Safe Engineering ET 200S Distributed I/O System - Fail-Safe Modules But you could start by looking at an application example for a system that is close to the one you wish to develop: a burner control application. It uses the same hardware and software platforms, and it should hep you get a feel for the requirements. http://support.automation.siemens.com/WW/view/en/16887335 Look especially at the attached document (in the previous link): "10 steps to burner application", which should guide you well. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 4/20/2011 11:21 PMLast edited by: dchartier at: 4/20/2011 8:28 PM |
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| 6/5/2011 1:46 PM | |
Joined: 1/28/2009 Last visit: 9/9/2024 Posts: 6849 Rating:
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Hi Also check the following links for alternative solutions: Fire and Gas Detection Milford Haven - Fire & Gas DetectionBest Regards |
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| 6/7/2011 8:06 AM | |
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Posts: 947 Rating:
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Hello deepak.samal05 You may want to abandon the TCP / IP protocols (modbus-tcp) - for the H-system, this greatly complicates the implementation and increases the price |
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