Fail-safe I/O for ET 200eco PN — what it is and where it fits
Siemens 6ES7146-6FF00-0BB0 is a fail-safe I/O module for the ET 200eco PN distributed I/O family. It packs four fail-safe digital inputs and two fail-safe digital outputs rated 2 A each, plus four configurable DI/Q channels and one IO-Link master channel, all in a compact M12-L housing with eCoding plug-in connector. The module carries a PROFIsafe safety rating up to PL e (ISO 13849) and SIL 3 (IEC 61508), so it handles machine safety functions like emergency stop, light curtains, and two-hand control directly on the remote I/O node without a separate safety relay. IP65/67 and IP69K protection makes it suitable for washdown environments — food processing, car washes, or chemical plants where hose-down is routine. The M12 connectors are tool-less and seal against coolant ingress.
Active lifecycle and compliance documentation
RoHS compliance effective from 03-09-25 is documented, and REACH candidate list information is available for documentation packages. REACH information can be provided for SVHC declarations. Export control is AL: N / ECCN: 9N9999, so no special license required for standard industrial shipments.
Sourcing and supply posture
As a current active item, this part is sourced through standard Siemens distribution channels. For tail-spend consolidation, it can be placed on a preferred-supplier punch-out catalog for one-click reorder — no maverick spend per PO. Group code R136 and product group 4B83 help match it to your procurement system's commodity codes, reducing invoice reconciliation time.