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August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components LSN Description

LSN Description and Specification

The SZ controllers and CSLSs can be physically connected

as a star topology (the LSN does not support network

ring topologies).

Starting with DeltaV SIS v13. the LSN Bridge (LSNB) allows

communication across multiple LSNs. The LSNB connect

to the LSN following a star topology.

Refer to the latest DeltaV SIS Installation and Planning Guide

for details of network layouts and network cable shielding

requirements and power and grounding requirements for

the overall DeltaV SIS system.

Wiring

The LSN requires the use of Category 5e screened (ScTP)

cable for the 100/1000 BaseT/TX safety network.

The maximum twisted-pair cable length for the LSN for any

device is 100 meters (328 feet).

The CSLS, LSNB, and SZ controller carriers contain Ethernet

ports to provide the redundant communication for the LSN.
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components Benefits Standards compliance

Standards compliance. Network components are compliant

with standards such as IEEE, CE, and CSA.

Scalable in small increments. You can 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.

Fully redundant communications. The safety networks are

fully redundant communication networks. The carriers for all

nodes have redundant safety network ports for communication

with primary and secondary network connections.

Port mirroring functionality. Port Mirroring can be

configured on the NextGen Safety Network Switches

either with an “administrator” role or a “engineer” role.

These switches have the capability to mirror the traffic of

several source ports, in a read only manner, to a destination port (probe port).
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components Benefits

Benefits

Dedicated to safety. Some systems from other

vendors use the same networks for both control and

safety. The DeltaV SIS LSN and GSN are dedicated to safety,

carrying only safety-rated signals and isolated from the

control network. They are therefore immune to any failure

of the control network.

Fifty millisecond update time. 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.

Plug-and-play components. As a dedicated safety network

with predictable communications traffic, Emerson has done all

of the system testing so you only have to plug the components

together to create the safety networks.
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components Introduction

• Dedicated to safety – no possibility

of common-cause control and safety

communication failures

• Required update time supported on

the DeltaV SIS™ local safety network

• Scalable and cost-effective

• Fully redundant networks

Introduction

The local safety network (LSN) is the communication backbone

of the DeltaV SIS™ process safety system. The LSN is a standard

Ethernet network dedicated to the DeltaV SIS system that

enables communication between CHARMs smart logic solvers

(CSLS) and a single SZ controller. The CSLSs communicate

secure parameters and input data to other CSLSs over the LSN.

SZ controllers connect to both the area control network and

the LSN to isolate the CSLSs from the process control system.

Starting with v13. the global safety network (GSN) enables

safety-rated communication among LSNs while allowing

functional segregation on different LSNs. A typical example is

separation of fire and gas (F&G) and emergency shutdown

(ESD) applications over separate LSNs while allowing safe and

secure communication across both applications. Starting with

v14.LTS, the GSN can be logically separated in domains which

are a group of LSNs.
August 19, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel with 5 populated slots

Applications information

VSA003 BNC cable assemblies are typically used

with VSA004 BNC patch panels in order to make

the buffered “raw” outputs from VSV30x + VSB300

monitoring modules readily available via BNC

connectors in a rack, panel or other permanent enclosure.

As each populated VSA004 BNC patch panel slot

uses a VSA003 BNC cable assembly to connect to

a VSV30x + VSB300 module, one VSA003 is

automatically included for each populated

panel slot in an order, although they can also be

ordered separately.

For specific applications and other information,

contact your local Meggitt representative.

The VSA004 BNC patch panel is a DIN-rail

mounting device, making it suitable for industrial

environments where equipment must be installed

on DIN rails. Its compact dimensions also allow it

to be deployed within an industrial housing with a

particular IP or NEMA rating, in order to provide

environmental protection.
August 19, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel with 5 populated slots Communications

VSA004 BNC patch panel

The VSA004 BNC patch panel is designed to

provide a permanently installed patch panel that

makes the buffered outputs from

VSV30x + VSB300 monitoring modules available

via BNC connectors in a rack, panel or other enclosure.

The VSA004 is a robust aluminium enclosure with a

standard height of 2U (HE). It provides 10

individual slots with a standard width of 4 TE that

can be populated with either a blank slot panel

or a populated slot panel with cutouts for three

BNC connectors (female), corresponding to the

buffered “raw” outputs of a VSV30x + VSB300

module. That is, the RAW CH1, RAW CH2 and

RAW AUX signals.

The VSA004 BNC patch panel is a DIN-rail

mounting device, making it suitable for industrial

environments where equipment must be installed

on DIN rails. Its compact dimensions also allow it

to be deployed within an industrial housing with a

particular IP or NEMA rating, in order to provide

environmental protection.
August 19, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel VSA003 BNC cable assembly

VSA003 BNC cable assembly

The VSA003 BNC cable assembly is designed to

connect the buffered sensor “raw” outputs

available from VSV30x + VSB300 monitoring

modules to other systems.

The VSA003 uses a 2 m long cable, one end of

which is terminated with flying leads crimped with

wire-end ferrules for easy connection to a

VSV30x + VSB300 module (via the terminal base’s

J2 connector). The other end of the cable is

terminated with female BNC connectors for use

with patch panels such as the VSA004 BNC patch panel.
August 19, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel VibroSmart distributed monitoring system

VibroSmart distributed monitoring system

A VibroSmart® distributed monitoring system

(DMS) is a network of small and economical

modules providing measurement,

communications or other functions that are

connected together in distributed, networked

measurement blocks in order to provide the

functionality normally offered by rack-based

machinery monitoring systems. A VibroSmart

system consists of one or more measurement

blocks, each containing up to sixteen VibroSmart

modules, such as VSV30x + VSB300 monitoring

modules, a power supply and an optional host

computer running the VibroSight® software.

As each populated VSA004 BNC patch panel slot

uses a VSA003 BNC cable assembly to connect to

a VSV30x + VSB300 module, one VSA003 is

automatically included for each populated

panel slot in an order, although they can also be

ordered separately.

For specific applications and other information,

contact your local Meggitt representative.
August 19, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel with 5 populated slots DESCRIPTION

The VibroSmart® VSA00x BNC cable assemblies

and BNC patch panels are accessories designed

for operation with VibroSmart VSV30x + VSB300

monitoring modules. The VSA003 is a BNC cable

assembly while the VSA004 is a BNC patch panel.

More specifically, VSA003 BNC cable assemblies

and VSA004 BNC patch panels make the

buffered sensor “raw” outputs from

VSV30x + VSB300 monitoring modules available

via BNC connectors in a rack, panel or other

enclosure in order to allow test and measurement

equipment to be more easily connected to these

VibroSmart module signals.
August 19, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel with 5 populated slots Introduction

Introduction

The VibroSmart® distributed monitoring system

(DMS) is a system of modular and scalable

products designed for condition monitoring and

machinery protection applications for power

generation turbines, oil and gas applications and

auxiliary balance-of-plant equipment.

VibroSmart® modules can be mounted directly

on machinery, eliminating the need for costly

cabling, because it is designed and certified to

work in extremes, such as harsh industrial

environments characterized by potentially

explosive atmospheres (Ex Zone 2), high

temperatures (70°C, 158°F) and high mechanical

stress. VibroSmart® complements the

VM600Mk2/VM600 series of rack-based solutions

from Meggitt’s vibro-meter® product line and is

compatible with the same VibroSight® machinery

monitoring system software.

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