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Baseefa Ltd

Improve scalability and flexibility with DeltaV SIS™ system

04 July 2016

The Local Safety Network Bridge (LSNB), available in Emerson’s DeltaV SIS™ process safety systems, is a new non-interfering device, enables flexibility and ease of system expansion by providing safety-rated communication among multiple local safety networks through a global safety network. The global safety network not only enables even larger applications, but also allows functional segregation.

The Local Safety Network Bridge (LSNB) enables flexibility and ease of system expansion by providing safety-rated communication among multiple local safety networks through a global safety network.

A typical example of functional segregation enabled by the LSNB is separation of fire and gas (F&G) and emergency shutdown (ESD) applications over separate local safety networks while allowing safe and secure communication across both F&G and ESD. No user configuration is required to transfer data across different local safety networks. LSNBs communicate over a redundant Ethernet safety network that can be extended via fiber optic links to cover large distances.

*  Dedicated to safety – no possibility of common-cause control and safety communication failures.
*  Required update time supported on the DeltaV SIS local safety network.
*  Fully redundant networks.

All the data broadcast on the LSN is available to every CSLS on the same LSN every 50 milliseconds. Combined with the speed of the CSLS, the 50 millisecond update time guarantees input-to-output time of less than 300 milliseconds anywhere on the LSN when the CSLS is configured for 50 millisecond scan rate.

Network components are compliant with standards such as IEEE, CE, and CSA.

You can to expand the system readily and economically by adding hardware incrementally to your system. Just plug another CSLS into the LSN and it is recognized by the system. Online addition of new CSLSs will not interrupt your process.

Learn more at: http://www2.emersonprocess.com/siteadmincenter/PM%20DeltaV%20Documents/DeltaV%20SIS/SIS%20Product%20Data%20Sheets/SIS_PDS_LSN.pdf
 


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