Emerson DeltaV SIS Logic Solver Process Safety System Brand New In Stock

DeltaV SIS™ Logic Solver

„ World’s first smart SIS Logic Solver

„ Flexible deployment

„ Easy compliance with IEC 61511

„ Scales to fit any size application

„ SIL 3-rated

„ Cybersecurity readiness

DeltaV SIS enhances safety function availability with predictive field intelligence.Reduces capital equipment costs with flexible and efficient installation.

It diagnoses faults in field instruments and control elements to improve process availability.

•Shortens installation time and reduces costs through modular design and plug-and.

•DeltaV SIS integrates with any DCS or DeltaV DCS without compromising safety.

play features

*The system ensures IEC 61511 compliance with automatic data verification.

•Boosts productivity by simplifying field installation.

•DeltaV SIS scales to fit various applications without needing additional processors.

• Increases process availability with reliable and robust design

•It is certified for cybersecurity according to ISA SSA Level 1 and IEC 62443

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 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.

The DeltaV SIS process safety system scales to fit your

safety application.

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.

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.

Unique Redundancy Methodology

Introduction to Redundancy

While the SLS 1508 Logic Solver is rated suitable for use in

SIL 3 applications in simplex mode, it is installed in redundant

pairs for increased process availability.

Redundant SLS 1508 Logic Solvers run in parallel at all times.

Both read the inputs from the I/O terminals, both execute

the logic and both drive the outputs at the I/O terminals.

There is no concept of primary and backup or master and slave,

which is unlike any other SIS. The only difference between

the two is that one communicates with both the engineering

and operator workstations and the dedicated safety network

(SISNet); this is the one with the Active light on the bezel.

The other (Standby) is communicating only on the SISNet.

In the event that a failure is detected in one of the SLS 1508

Logic Solvers, it automatically goes to a failed state. In this

condition, all its output channels are de-energized; this has

no impact on the other SLS 1508 Logic Solver or the physical

outputs because the other SLS 1508 Logic Solver continues

to read inputs, execute logic and drive outputs. The transition

from redundant to simplex mode is therefore

completely bumpless.

Redundancy

The redundant SLS 1508 Logic Solver modules are connected

to the field at the redundant terminal block. No control strategy

configuration is required to take advantage of SLS 1508 Logic

Solver redundancy, as the system’s auto-sense capability

automatically recognizes the redundant pair of Logic Solvers.

An integrity error alarm in a redundant SLS 1508 Logic Solver

pair will notify the operator of a failure. Both SLS 1508

Logic Solvers in a redundant pair are monitored for integrity

alarms at all times.

Events that can cause integrity alarms include:

„ Hardware failure within a SLS 1508 Logic Solver

„ Communications failure between a SLS 1508 Logic Solver

and the SISNet

„ Communications failure between a redundant pair of

SLS 1508 Logic Solvers

„ Communications failure between a SLS 1508 Logic Solver

and an DeltaV Controller

„ Removal of a SLS 1508 Logic Solver from the carrier

The health and status of both SLS 1508 Logic Solvers

and their channels are available in the diagnostics explorer.

When one of a redundant pair of SLS 1508 Logic Solvers

is removed online there is no disturbance to the process.

When the missing SLS 1508 Logic Solver is replaced with

another SLS 1508 Logic Solver, the new SLS 1508 Logic Solver

completes its power-up self-tests before the active Logic Solver

cross-loads the current database. In safe areas, failed SLS 1508

Logic Solvers can be replaced under power. In hazardous areas,

appropriate installation procedures must be followed.

Automatic proof testing can be selected on a redundant pair

of SLS 1508 Logic Solvers. The desired proof-test interval is set

in the configuration and the SLS 1508 Logic Solvers perform

the proof test automatically. A warning is given to the operator

before the automatic proof test is started.

Sequence of Events Capability

With DeltaV SIS process safety system, events are automatically

generated as function blocks are executed within a module

scan. Events are time stamped with a resolution of <1 ms,

and they are recorded in the sequence that they occur in the

Event Chronicle. When using standard function blocks such

as input blocks, |voter blocks, and cause and effect blocks,

a standard set of events are automatically generated without

special configuration or programing required. For example,

I/O failures, trip limits, first outs, and other similar events are

automatically time stamped by function blocks and recorded

in the Event Chronicle. When a process variable exceeds the

trip limit, DeltaV SIS records the event along with the analog

value and the trip condition

In general, when there is a plant event that triggers an

emergency shutdown from the SIS, one input will exceed a

trip limit on one scan and this will cause outputs to trip and

more inputs will then change state. Sequence of Events

Recording has been used to find that first input that caused

the trip by looking at all of the inputs in the plant. With the

DeltaV SIS system, the operator simply filters the Event

Chronicle for first out trips, and the first-out is clearly visible.

If higher resolution is required for some channels then they can

be wired to both the DeltaV SIS Logic Solver and also to a DeltaV

Discrete Input Card for Sequence of Events, which provides a

resolution of 0.25 ms.

System Compatibility

DeltaV SLS 1508 Specifications

Common Environmental Specifications for SLS 1508 Logic Solver

Category Specifications

Storage Temperature -40 to 85°C (-40° to 185°F)

Operating Temperature* -40 to 70°C (-40° to 158°F)

Relative Humidity 5 to 95% , non-condensing

Airborne Contaminants ISA-S71.04-1985 Airborne Contaminants Class G3

Conformal coating

Protection Rating IP 20

Hazardous Area/Location European EMC Directive per EN61326-1, Criterion A

NAMUR NE21 EMC Requirements

Low Voltage Directive IEC 61010-1

Factory Mutual, Non-Arcing

Class 1, Div 2, Groups A, B, C, D, T4 hazardous locations

ATEX 3 G EEx IIC-nA T4 EN50021:1999

CSA 1010

Shock 10 g ½-sine wave for 11 ms

Vibration 1 mm peak-to-peak from 5 to 16 Hz;

0.5 g from 16 to 150 Hz

SLS 1508 Logic Solver Physical Specifications

Item Specifications

Input Power 24 V DC ± 20%, 1.0 A plus field power (5.0 A total)

Note: It is recommended that the SLS and DeltaV controller and I/O use separate

power supplies

Field Power 4 A maximum (actual value depends upon channel type and field device type)

Isolation Each channel is optically isolated from the system and factory-tested to 1500 V DC.

No channel-to-channel isolation.

Local Bus Current None

Mounting In SIS (yellow) terminal blocks in odd-numbered slots (1, 3, 5, 7) on the 8-wide carrier.

Redundant SLSs take 4 slots.

Channel Specifications

The Logic Solver provides 16 channels of flexible I/O, meaning that each channel can be configured as an Analog Input (HART),

HART Two-State Output, Discrete Input, or Discrete Output channel.

Analog Input Channel Specifications (Includes Hart)

Item Specifications

Number of Channels 16

Isolation Each channel is optically isolated from the system and factory-tested to 1500 V DC.

No channel-to-channel isolation.

Nominal Signal Span 4 to 20 mA

Full Signal Range 1 to 24 mA

2-Wire Transmitter Power 15.0 V minimum terminal-to-terminal @ 20 mA; current limited to 24 mA max

Input measurement accuracy 0.2% of span

Safety / Diagnostic Accuracy 2.0% of span

Resolution 16 bits

Filtering 2-pole, corner frequency 5.68 Hz

-3 dB at 5.68 Hz

-20.0 dB at 40 Hz (half the sample rate)

SLS 1508 Logic Solver Weight, Heat Generation and Power Consumption

Item Specifications

Redundant Logic Solver Weight – 1.20 kg

Heat Dissipation – 24 W

Power – 2 A @ 24 V DC + Dig out Field Loads

Hart Two-State Output Channel Specifications

Item Specifications

Number of Channels 16

Isolation Each channel is optically isolated from the system and factory-tested to 1500 V DC.

No channel-to-channel isolation.

Nominal Signal Span On state 20 mA

Off state 0 or 4 mA (configurable)

Full Signal Range 0 to 24 mA

Safety / Diagnostic Accuracy 5.0% of span

Resolution 12 bits

Compliance Voltage 20 mA into 600 Ω load

Open-Loop Detection < 1.0 mA – when the output drifts 15% out of the configured value

Discrete Input Channel Specifications

Item Specifications

Number of Channels 16

Isolation Each channel is optically isolated from the system and factory-tested to 1500 V DC.

No channel-to-channel isolation.

Detection Level For On ≥2 mA

Detection Level For Off ≤1.65 mA

Input Impedance ~1790 Ω

Input Compatibility Inputs compatible with:

„ NAMUR sensors (12 V)

„ Dry contact

„ Dry contact with end-of-line resistance

Line Fault Detection –

Short Circuit (Optional)

100 Ω

> 6 mA

Line Fault Detection –

Open Circuit (Optional)

> 40 kΩ

< 0.35 mA

Discrete Output Channel Specifications

Item Specifications

Number of Channels 16

Isolation Each channel is optically isolated from the system and factory-tested to 1500 V DC.

No channel-to-channel isolation.

Output Voltage Field power minus 2 V

Field Power 0.5 A continuous per channel; 4.0 A max. per card

Output Loading 56 to 3500 Ω

Off-State Leakage Open loop test on: 7.8 mA

Open loop test off: 4.5 μA typical; 10 μA max.

Note: Optional pulse test will apply 24 V DC pulse on line for 1.0 mS every 50 mS.

Refer to the Installation Notes for more information on pulse testing.

Short Circuit Protection Outputs current limited to 2.0 A typical

Line Fault Detection – Short Circuit <5 Ω for >1 second with +24 V DC field power.

Refer to the Installation Notes for information on pulse testing.

Line Fault Detection – Open Circuit

(With +24 V Dc Field Power)

>25 kΩ for open loop detection

<3.5 kΩ for no open loop detection

Refer to the Installation Notes for information on pulse testing

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