ET 200S 1F-RO 5 A fail-safe relay module
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The 1 F-RO module 6ES7138-4FR00-0AA0 is a safety-related component for the SIMATIC ET 200S distributed I/O system. It provides relay-based disconnection of a load circuit and can be used for the safe shutdown of standard load groups.
In a typical configuration, the F-RO module is controlled by a fail-safe output of the ET 200S system. Siemens permits use up to high safety levels only when the requirements for the configuration and control of the complete safety circuit are met, so the safety level must not be assessed from the relay module alone.
When selecting a replacement, verify the complete order number and compatibility with the existing ET 200S configuration. Detailed electrical ratings and design data are listed in the technical specifications section.
