Emerson DeltaV SIS™ Logic Solver Benefits-Flexible deployment

Benefits

The World’s first smart SIS. Research shows that over 85% of all faults in SIS

applications occur in field instruments and final control elements.

The DeltaV SIS process safety system has the first smart logic solver.

It communicates with intelligent field devices using the HART protocol

to diagnose faults before they cause spurious trips. This approach increases

process availability and reduces lifecycle costs.

Flexible deployment. Traditionally, process safety systems have been deployed

either separate from the control system or interfaced to control systems via

engineered interfaces based on open protocols (e.g. Modbus).

However, most end users require a higher integration for configuration,

maintenance, and operations environment. DeltaV SIS can be deployed

either as interfaced to any DCS or integrated with DeltaV DCS.

Integration is accomplished without scarifying functional separation as safety

functions are implemented in separate hardware, software, and networks

while being seamlessly integrated at the workstations.

Easy Compliance with IEC 61511. IEC 61511 demands rigorous user

management and the DeltaV SIS process safety system provides it.

IEC 61511 requires that any changes made from an HMI (e.g. to a trip limit)

be extensively vetted to ensure that the right data is written to the right Logic Solver.

The DeltaV SIS process safety system automatically provides this data verification.

Scales to fit any size application. Whether you have anisolated wellhead

or a large ESD/fire and gas application, the DeltaV SIS process safety system

scales to provide you with the safety coverage you need for your SIL 1. 2 and 3 safety

functions. Each SLS 1508 Logic Solver has dual CPUs and sixteen channels

of I/O built into it. This means that no additional processors will ever be required

to expand the system, since each Logic Solver contains its own CPUs.

Scan rate and memory usage are constant and independent of system size.

SIL 3-rated. DeltaV SLS 1508 Logic Solvers are installed inredundant pairs for

increased process availability of your SIS loops.

Redundant architecture includes:

• Dedicated redundancy link

• Separate power supply to each Logic Solver

• I/O published locally every scan on redundant peer-to-peer link

• Same input data for each Logic Solver

Cybersecurity readiness. In an increasingly connected world,cybersecurity rapidly

became an integral part of every process safety project. Building a defendable

architecture is the basisfor achieving a defendable safety system.

DeltaV SIS when deployed with DeltaV DCS was the first process safety system

to be certified according to ISA System Security Assurance (SSA) Level 1. based on IEC 62443.