The Schneider BMXDAI1603H is a Modicon X80 discrete input module with 16 channels rated for 48 V AC at 5 mA per input, positive logic sink. That means it picks up standard 48 V AC sensor signals directly — no signal conditioning needed between the field device and the backplane. Power dissipation runs 4 W, which keeps heat low in a dense rack. Current consumption from the backplane is 107 mA at 3.3 V DC typical, so you’re not eating into the bus budget. Physical envelope: 32 mm wide, 86 mm deep, 103.7 mm tall. Conformal coating is standard on this module — not an option. Combined with the gas, dust, salt, and mold resistance ratings, it’s built for severe industrial environments: washdown zones, chemical processing, coastal installations.
Markings include CE, UKCA, CULus, EAC, and RCM — covers EU, UK, US/Canada, Eurasian, and Australian approvals. Standards compliance to IEC 61131-2 and low-voltage/EMC directives (2014/35/EU, 2014/30/EU). Documentation for your compliance pack is straightforward.
Integration & field wiring
Input wiring uses 2 or 3 wires per channel. One external 0.5 A fast-blow fuse protects each group of channels. The module supplies sensor power at 40…52 V from the internal source — no separate auxiliary supply needed for the sensors. Dielectric strength tested at 1500 V AC for 1 minute between channel and bus, so isolation is robust. Shock rated at 30 gn, vibration at 3 gn — tough enough for rotating machinery and conveyors. State 0 guaranteed above 10 MΩ at 500 V DC; state 1 guaranteed at ≥ 34 V AC. The AC response time is 10 ms on activation, 20 ms on deactivation — fast enough for process monitoring, not for high-speed counting.