11/16/2017 11:13 AM | |
Joined: 2/25/2011 Last visit: 9/6/2024 Posts: 67 Rating: (5) |
Dear Experts, Waiting for your suggestions. Thanks. |
11/17/2017 3:50 AM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685)
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Hello Person; I am not aware of the possibility of a backup H-system to a primary H-system in Siemens' world. Perhaps someone here with experience in such applications can provide some information on this architecture, or you could go directly to Siemens Support (through a Support Request, you will find a link at the top of this page) and ask for an official statement on the subject. In many critical processes (such as power generator and chemical plants) Siemens will propose PCS 7 with redundant H-system controllers as their main platform. Of course the architecture will involve redundant power supplies on each H-system, individual UPS on each rack, separate redundant main power input lines and/or emergency generator systems, redundant communication servers, etc...See the screenshot below for a typical design diagram.. The main competition to Siemens' H-systems for critical applications is known as triple modular redundancy (TMR) systems. In a recent discussion on the forum the differences between the 2 architectures was described: How Siemens Safety Systems FMR Architecture Competing with TMR Systems! Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 11/17/2017 3:59:59 AM |
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