LSN Hardware Includes:

• NextGen DeltaV SIS Smart Switches

• Ethernet Isolation Ports on the SZ Controller

•  SNPs on the CSLS carrier

•  LSNB to communicate with other LSNs through a GSN.

A redundant CSLS communicates over the LSN with up to

15 other CSLSs, 1 SZ controller, and 1 LSNB allowing great

flexibility and ease of system expansion.

Only DeltaV SIS Smart Switches are supported on the LSN.

The LSN is certified according to the concept of black channel

per IEC61508-2. Therefore, the LSN hardware components

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

Fiberoptic Wiring

Safety network ports (SNP) on the CSLS are available for

copper only. DeltaV SIS Smart Switches can be connected

using fiberoptic cables.

Because fiberoptic cables do not conduct electricity,

they should be used in connections between buildings

or in plant areas where electromagnetic interference is present.

Fiberoptic cabling must be used where cable runs are longer

than 100 meters (328 ft.).