What it is, and where it sits in the cabinet
The Omron E3NXFA41AN2MOMS is a fibre-optic amplifier unit from the E3NX-FA series, built as the electronic half of a remote optical sensing pair — the amplifier sits in the panel while a fibre cable reaches out to the actual photoelectric work in the field. The housing is 10 mm wide, 33.5 mm tall, and 71.8 mm long — the same compact DIN-rail-friendly footprint carried across the series, so it lands in tight sensor banks without forcing a re-layout. The light source is a red LED, and the unit ships with a 2 m cable lead for direct wiring into the amplifier terminals inside the cabinet.
Electrical envelope and what the numbers actually govern
Load current is rated 100 mA on the switching output, which is the ceiling for the PNP driver into the downstream input card or relay coil — beyond that the output transistor derates, so watch it when fanning out to two parallel loads. Ambient operating range is −25 °C to +55 °C, which lines the amplifier up for outdoor plant skids and non-climate-controlled rooms; storage limits extend further but the operating ceiling is what governs placement near motor cabinets or kiln-adjacent panels.
Speed, switching, and PNP wiring logic
Response time is 30 µs — fast enough for short-stroke indexing lines, label-detection at moderate web speeds, and small-part counting, but not a sub-microsecond vision-grade pick — which means cable-length capacitance on the 2 m lead will not meaningfully slow it. Switching mode is selectable between Light-ON and Dark-ON, so the same amplifier covers presence-detect and absence-detect logic without re-ordering a different SKU. The optical sensor output is PNP, sourcing the load to the positive rail — the wiring logic for a sinking-input PLC or relay coil referenced to common. The E3NXFA11AN2MOMS sibling in the same housing covers NPN.
Sourcing closure
This page targets the exact code E3NXFA41AN2MOMS: a PNP-output fibre amplifier with 30 µs response that drops into an existing E3NX-FA amplifier slot. The lifecycle stage supports a normal, repeatable procurement posture. Send the BOM line in as an RFQ — quoting against the order code returns a current lead-time and supply window against the same channel the rest of the E3NX-FA panel runs through, and keeps the amplifier on its documented spec rather than a parametric substitute the panel never validated.