Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

TMR

Created by: N. Vijay at: 6/23/2013 12:56 PM (4 Replies)

Rating (0)

Thanks 0

5 Entries

6/23/2013 12:56 PM	Rate (0)
N. Vijay Silver Member Joined: 3/17/2013 Last visit: 8/25/2024 Posts: 481 Rating: (43)	Hi Experts, Does any of the SIEMENS PLCs support Triple Modular Redundancy. If yes details please Regards Vijay

Suggestion To thank Quote Answer

6/23/2013 3:53 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 9/9/2024 Posts: 12282 Rating: (2682)	Hello Vijay; Siemens does not provide a TMR or QMR (Quadruple Modular Redundancy) system, that relies on increasing levels of hardware for security purposes. Rather it proposes an alternative based on FMR (Flexible Modular Redundancy) that implements the same SIL or PEL levels of safety using software configurations. Our member Gunner proposes a very informative presentation on that subject in the following discussion. You should also spend some time on the fine analysis provided by our friend H-H in the same thread: How Siemens Safety Systems FMR Architecture Competing with TMR Systems! Hope this helps, Daniel Chartier

Suggestion To thank Quote Answer

6/27/2013 6:46 PM	Rate (0)
RKM Posts: 93 Rating: (13)	Dear friends, As far as what gunners said is the inheritent feature of FH systems. and same has been impemented in almost all instalations of FH systems. The only creative thing inFlexible modular redundamcy is the saperate location for main and standby controllers using the property of FO cable. so in case of problem of main cabnate standby CPU will be unaffected.
RKM Posts: 93 Rating: (13)
Suggestion To thank Quote Answer

6/28/2013 6:49 AM	Rate (0)
viralpatel Silver Member Joined: 11/18/2010 Last visit: 8/5/2022 Posts: 523 Rating: (31)	Hi , i think vijay mean to say redundancy is in terms of 3/4 CPUcommunicate with each other same time not only Expansion level moduleand FH system is totally different part,in siemens wehave not seen this type of architecture but in GE PLC have this type of option upto Quad redundancy, viral patel

Suggestion To thank Quote Answer

7/2/2013 8:49 AM	Rate (0)
Anit Kumar Posts: 153 Rating: (2)	dchartier Hello Vijay; Siemens does not provide a TMR or QMR (Quadruple Modular Redundancy) system, that relies on increasing levels of hardware for security purposes. Rather it proposes an alternative based on FMR (Flexible Modular Redundancy) that implements the same SIL or PEL levels of safety using software configurations. Our member Gunner proposes a very informative presentation on that subject in the following discussion. You should also spend some time on the fine analysis provided by our friend H-H in the same thread: How Siemens Safety Systems FMR Architecture Competing with TMR Systems! Hope this helps, Daniel Chartier one more detailed reply bydchartier /tf/WW/en/Posts/81620#top
Anit Kumar Posts: 153 Rating: (2)
Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on