Most safety instrumented functions only require a safety performance rating of up to SIL 2. However, most of today's safety PLCs are certified to SIL 3. Why can't you simply use a standard PLC configured to be safe in order to achieve your safety performance goals?
During this Innovation Session, we'll:
• Explore how different technologies fail in different modes
• Discuss why SIL 3 safety PLCs might be needed for safety instrumented functions with SIL 2 performance requirements
• Analyze an accident where SIL 2 generic PLCs configured to be safe were used