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Opto 22 redundant SNAP PAC controllersController Redundancy with Opto 22 SNAP PACs

You can create a redundant industrial control and automation system for even greater system reliability without having to buy special controllers, cables, or I/O.

  • Use Opto 22 SNAP PAC S-series programmable automation controllers, our regular standalone PACs at regular prices—the same ones you use in any SNAP PAC System.
  • Use SNAP I/O, known for its reliability and wide variety of signal inputs. Standard product.
  • Connect controllers with standard Cat5 Ethernet network and RS-485 serial cabling. No special wires.
  • Develop your redundant control program with our standard PAC Project Professional 9.x industrial control software suite.

Standard controllers make commissioning and testing easier. Since either controller can be active or backup, you can swap controller roles at any time.

What is controller redundancy? It's a way to increase your system's mean time between failures (MTBF) by providing a backup controller that takes over running the control program in the unlikely event that the first controller fails.

For details on setting up a redundant system, see the SNAP PAC Redundancy Option User's Guide, form #1831.

Learn more: watch this Controller Redundancy webinar:  

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