SLS1508 KJ2201X1-BA1 Emerson DeltaV SIS™ Logic Solver

SLS1508 KJ2201X1-BA1 is a safety instrument system logic solver (SIS Logic Solver) in the Emerson DeltaV system. It is mainly used in industrial automation and control systems as a bridge to connect sensors, actuators, cables and other devices to achieve signal transmission and control functions.

The DeltaV SIS™ process safety system, part of Emerson's smart SIS, ushers in the next generation of Safety Instrumented Systems (SIS). This smart SIS approach uses the power of predictive field intelligence to increase the availability of the entire safety instrumented function.

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 an isolated 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 in redundant 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 basis for 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.

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