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Entry type: FAQ Entry ID: 81353885, Entry date: 09/21/2018

Input expansion of a fail-safe controller with 3SK1

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This article contains a statement on the input extension of a fail-safe controller with 3SK1

How can I multiply inputs of a fail-safe controller or read in sensors with voltages other than 24 V DC to a failsafe PLC?



The SIRIUS 3SK1 safety relays offer such an option with their basic unit and input expansion modules. This means you can expand the number or connectable sensors for each F-input terminal of the fail-safe controller. This FAQ shows the different options for using the 3SK1 device series as input expansion modules.

  FAQ_81353885_Input_expansion_of_a_fail-safe_controller_with_3SK1_V2_1_en.pdf (1002,4 KB) 



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SIMATIC S7-300, Safety, SIRIUS



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