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EMERSON SLS24012 Output Open Linear Power Module

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.

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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.

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  Introduction

  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 functionhttps://www.axcontroler.com/


  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


  Product Description

  This section provides general information on DeltaV SIS hardware. Refer to the Installing Your DeltaV Distributed Control System manual for more information on DeltaV system hardware.


  DeltaV SIS Hardware

  The DeltaV SIS process safety system consists of the following hardware:

   Redundant Logic Solvers (SLS 1508) and termination blocks

   SISNet Repeaters (see separate product data sheet)

   Carrier extender cables

   Local peer bus extender cables

   Right 1-wide carrier with termination

  Logic Solvers (SLS 1508) contain the logic-solving capability and provide an interface to 16 I/O channels that can be configured as Discrete Input, Discrete Output, Analog Input (HART) and HART two-state output channels. Logic Solvers and termination blocks install on the 8-wide carrier. Logic Solvers communicate with each other through the carriers over a two-channel, local peer bus (SISnet) and remote peer ring. Local Logic Solvers are hosted by the same DeltaV controller and remote Logic Solvers are hosted by a different DeltaV controller. Logic Solvers are powered by a 24 V DC power supply that is separate from the power supply that drives the DeltaV controller and I/O. Logic Solvers install in odd-numbered slots (1,3,5,7) on the 8-wide carrier. Redundant Logic Solvers use four slots.

  SISNet Repeaters extend communication beyond the local Logic Solvers connected to one DeltaV controller and broadcast global messages to remote SLS 1508 Logic Solvers through a fiber-optic ring Carrier extender cables extend Local Bus power and signals between 8-wide carriers. Local peer bus extender cables extend the local peer bus (SISNet) between SLS 1508 Logic Solvers on different carriers. 1-wide carriers with terminators terminate the local peer bus at the final carrier. For additional information please consult DeltaV SISNet Repeater product datasheet.


  Communication

  Control Network: The DeltaV Control Network provides communication between the nodes in the DeltaV network. Refer to the Installing Your DeltaV Digital Automation System manual for complete information on the Control Network.

  Local Bus: The Local Bus provides communication between DeltaV controllers and SLS 1508 Logic Solvers and between DeltaV controllers and SISnet Repeaters.

  Local Peer Bus (SISNet): SLS 1508 Logic Solvers communicate with other SLS 1508 Logic Solvers and with local SISNet Repeaters through the carriers over a 2 channel local peer bus. The same message is broadcasted over both channels. The local peer bus must be terminated at both ends. The local peer bus is terminated at the left end through the 2-wide power/controller carrier and at the right end through a terminated 1-wide carrier.

  The SISNet Repeaters can be located anywhere on a local peer bus – between the DeltaV Controller(s) and the terminated 1-wide carrier

  Remote Peer Ring: SISNet Repeaters hosted by one DeltaV controller communicate with SISNet Repeaters hosted by a different DeltaV controller over a fiber-optic remote peer ring. A local SISNet Repeater collects locally generated messages that have been designated as global variables into a single message and sends it to the next SISNet Repeater in the ring. Upon receipt of a message, the receiving SISNet Repeater broadcasts it on its local peer bus (SISNet) and forwards the message to the next SISNet Repeater in the ring. A global message is forwarded around the ring once. The primary SISNet Repeaters form one fiber-optic ring and the secondary form a separate, independent ring.

  Carrier extender cables and local peer bus extender cables connecting a DeltaV controller and 8-wide carrier with standard DeltaV I/O and SLS 1508 Logic Solver to a second 8-wide carrier (hosted by the same controller) are installed with SLS 1508 Logic Solvers, SISNet Repeaters, and a terminated 1-wide carrier. SLS 1508 Logic Solver messages are communicated to a remote SLS 1508 Logic Solver (hosted by a separate controller) through fiber-optic cables. Multiple Domains: The simplest implementation of an SLS 1508 network is to have one SIS Network ring and one SIS Network domain, that includes all of the logic solvers in the SIS Network ring. In larger applications, the logic solvers can be split into multiple SIS Network domains. Another approach is to have multiple SIS Network rings, each on a SIS Network domain


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