Emerson DeltaV SIS™ Safety Network Components GSN Hardware

GSN Hardware Includes:

• NextGen DeltaV SIS Smart Switches

• LSNBs to communicate with other LSNs throughout the GSN.

LSNB communicates over the GSN with other LSNBs,

allowing great flexibility and ease of system expansion.

Up to 16 LSNBs can publish safety data into one GSN domain

but the maximum number of LSNBs publishing information

depends on amount of data published by each LSNB.

There is no limit for the number of LSNBs subscribing to

information from the GSN. Prior to v14.LTS, only one domain

was supported within the GSN, starting v14.LTS and later,

up to 16 domains are supported within the GSN. Refer to

Books Online for more information about system capacities.

Only DeltaV SIS Smart Switches are supported on the GSN.

The GSN requires DeltaV SIS NextGen Smart Switches or the

legacy DeltaV SIS Smart Switches with software release 4.2.14 or greater.

The GSN is certified according to the concept of black channel

per IEC61508-2. Therefore, the GSN hardware components

are considered as an interference free hardware component of the SIS.

NextGen DeltaV SIS Smart Switches

The DeltaV SIS Smart switches are “built-for-purpose” switches with DeltaV SIS specific software and features to make them

plug-and-play in the safety network.

DeltaV SIS Smart Switches require no configuration to function on the safety network.

DeltaV SIS NextGen Smart Switches and the legacy DeltaV SIS Smart Switches are the only supported switch to be used

within the LSN and GSN. DeltaV SIS Smart Switches are different than DeltaV Smart switches (non-SIS) and are not interchangeable.