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Jim Cahill
11 Jan 2012
Technologies
distributed safety
centralized safety
IEC 61508
IEC 61511
Safety
process safety
safety instrumented system
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Centralized, Distributed, and Hybrid Safety Instrumented Systems
Emerson’s Mike Boudreaux alerted me to a great article comparing safety instrumented system architectures. The ISA InTech article, Centralized or distributed process safety compares and contrasts centralized, distributed, and hybrid safety systems. Centralized systems have a single logic solver with all safety I/O routed and hardwired back to it. Distributed systems locate the logic controllers [...]