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 Emerson extends the proven innovations of our PlantWeb® architecture to safety applications.
The resulting smart safety instrumented system is the first to provide an integrated approach to complete safety loops - from sensor to logic solver to final control element.
It's also the first to use digital intelligence and diagnostics to enable more automated safety loop testing and other features that increase system availability while reducing life-cycle costs and easing regulatory compliance.
At the heart of smart
As a key component of this smart SIS solution, the IEC 61508 certified DeltaV SIS system (2.5MB PDF) takes advantage of the PlantWeb architecture's digital communications and smart diagnostics within field devices to increase the availability of the whole of the Safety Instrumented Function. Scheduled partial-stroke testing of final control elements can improve the safety level, reduce the number of risky personnel trips into the field, and increase the mandatory proof test interval.
And, the DeltaV SIS system has the proven ease of use of our industry-leading DeltaV digital automation system.
DeltaV SLS 1508 logic solver
Key DeltaV SLS 1508 logic solver capabilities include
- 24V DC redundant power
- 16 channels per logic solver in any combination of HART AI, HART AO, DI, and DO
- Line fault detection on all I/O
- Separate I/O processor and CPU
- Redundant CPU processor
- 50 ms execution
- Upgradeable under power
- -40° to 70° C (compliant with NAMUR NE 21 temperature rating)
- ISA G3 (corrosion environment rating)
Flexible architecture for any size
Whether you have an isolated boiler or a large ESD application, the DeltaV SIS system can provide the safety coverage you require. The modular logic solver hardware scales in sizes of 16 configurable I/O, so you automatically add memory and CPU every time you add a logic solver. The days of running out of memory or CPU power are over.
Integrated but separate
With a DeltaV digital automation system as your basic process control system, choosing a DeltaV SIS system provides the integrated engineering and operating environment you've always wanted - while maintaining separation of safety-critical elements as required by IEC standards.
Integration with other systems or applications is also available using OPC or Modbus.
Available redundancy
You can increase the availability of your safety loops with a redundant pair of SLS logic solvers. Features include separate power, separate logical addresses, a dedicated redundancy link, and CRC checking on every scan.
Intuitive software
A full palette of smart function blocks designed specifically for SIS functions is available for your smart SIS solution. Special blocks like XooY voter blocks reduce what used to be pages and pages of ladder to engineer, test, and commission into a simple drag-and-drop configuration activity. You also get
- Built-in alarm state engine per EEMUA 191 standard
- Built-in sequence of events handler
- Optional operator interface
- Off-line simulation
- Built-in bypass handling
- Built-in override bundling
- Automatic compliance to IEC 61511
The DeltaV SIS system delivers version control and audit trail (VCAT) within its software and the AMS™ Suite: Intelligent Device Manager software to help simplify process manufacturers' compliance with IEC 61511. Changes are recorded in the DeltaV SIS system, including date, time, author, or respective alarm level. Plant Messenger will direct the events with corrective actions to the relevant department by e-mail, text message (SMS), or pager. Plant
Event Historian will automatically document all the events.
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