Process Safety (SIS)

Regardless of plant complexity or size, safety and security are a high priority for the process industry. Siemens SIMATIC PCS 7 and SIMATIC SIS Compact provide Safety Instrumented System (SIS) solutions specifically designed to protect your critical assets.

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Control Engineering Engineers choice award

Engineers' Choice Award for Process Safety

Spotlight on innovation: SIMATIC SIS Compact Safety System was voted best product in the Process Safety category. Engineers' choice winners are awarded based on technological advancement, service to the industry, and market impact.

7 reasons SIMATIC PCS 7 is your choice for process safety

  • Intuitive interface makes it easy to comply with OSHA's process safety management (PSM) requirements for documenting and managing your dedicated Safety Instrumented Systems (SIS)

  • Complete range of safety-rated field devices flexible enough to stand alone and operate as an independent Safety Instrumented System 

  • Simple process safety with automatic self-diagnostics that remove the need for manual proof tests

  • Scalable I/O options for small, compact to large and remote applications

  • Secure SIL-rated communication protocols protect against unauthorized interference

  • Integrated handling of both safety and standard signals provides a cost effective motor management system for safety applications that require final control of low voltage process motors

  • Available flexibility to support multiple redundant architectures, preventing nuisance trips without compromising safety


SIMATIC SIS Compact - The Stand-Alone Safety PLC

SIMATIC SIS Compact was designed as a dedicated safety control system for Safety Instrumented Systems (SIS) based on selected system components of SIMATIC PCS 7 and the SIMATIC Safety product portfolio.


Studies show that incorrect specifications are the number-one cause of process-related accidents. Avoid these unnecessary risks by downloading the following specification that will help your safety system project move along smoothly.



SIS Compact Benefits:


  • Reduced cost - The SIS Compact is designed as a stand-alone SIS without the DCS overhead

  • Low risk - Using the field-proven SIMATIC technology with over 30 years of SIS experience

  • Industry compliant - Certified by TUV for Safety (IEC 61508) and Security (IEC62443)

  • Reduced false trips – Fault-tolerant architectures provide high system availability

  • Simplified maintenance - Uses the latest state-of-art SIS tools (function block and cause-and-effect diagrams) for easy trouble shooting and MOC

  • Powerful - Can also support integrated control functions when physical separation isn't feasible or practical

  • Expandable - Supports the ability to network multiple systems together as your plant needs grow

Benefit from a wide range of applications


SIMATIC SIS Compact – designed for use in safety-critical applications in the process industry.

SIMATIC SIS Compact can be used for safety applications up to SIL 3, as per IEC 61508. In addition to the engineering tools, the SIMATIC SIS Compact also offers an optional operator package to provide and integrated HMI to operate, monitor and maintain your SIS.


Industry applications include:

Burner Management System Safety-Rated Technology

Siemens pre-packaged Burner Management Systems (BMS) are designed and built in accordance to NFPA and ISA safety standards.


Our system includes:

  • Best-in-class local HMI for better operation and maintenance of your fired equipment

  • TUV-certified BMS logic blocks

  • Flexible redundancy options

  • Complete safety lifecycle tools to help meet functional safety requirements

Integrated safety for a single BMS that meets today's safety standards


Complete this short form to download a white paper by Exida for new information about the latest standards required for combining control and safety in certain applications.


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Choosing Functional Safety Instrumentation

Certified, prior use or both? Fundamentals of VDI 2180. Can you justify safety instrumentation?


Determining the equipment to use in safety instrumented systems (SIS) and the rules for maintaining them is one of the most difficult and controversial topics in the industrial SIS marketplace. Learn more from Siemens industry experts.