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  • When to Use Multi-Function Safety Relays

    Author: Lenny Filipkowski, AutomationDirect

    Often the Best Choice for Applications Where SingleFunction Relays Aren’t Capable Enough and a Safety-Rated PLC is Overkill

  • Redundancy for OPC

    Author: Robert McIlvride, Andew Thomas, Cogent Real‐Time Systems Inc.

    Redundancy in a process control system means that some or all of the system is duplicated, or redundant. The goal is to eliminate, as much as possible, any single point of failure. When a piece of equipment or a communication link goes down, a similar or i

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