Overview
The 140DAI35300 is a Schneider Modicon Quantum VAC discrete input module, order code 140-DAI-353-00, providing 32 discrete input points across 4 channels at 24 VAC nominal. It mounts on a Quantum chassis and carries CE marking with UL 508 and CSA C22.2 No 142 certifications.
Input status is indicated by 32 green LEDs, one per point, plus a green bus-communication LED and a red external-fault LED. The module responds within 4.9 ms and requires 2 input words of addressing in the Quantum backplane. The absolute maximum input rating is 30 V continuous, 32 V for 10 s, and 50 V for 1 cycle — a useful margin for transient handling on lightly regulated AC supplies.
Applications
This module is used in Modicon Quantum automation platforms for monitoring discrete AC signals — limit switches, pushbuttons, proximity sensors, and relay contacts on 24 VAC control circuits. Typical installations include packaging lines, conveyor systems, water treatment skids, and material handling cells where the control voltage is AC rather than DC.
The 140DAI35300 carries CE marking and is certified to UL 508 and CSA C22.2 No 142. Additional certifications include FM Class 1 Division 2 for hazardous locations and cUL. The module also lists California Proposition 65 compliance. No lifecycle status (active/obsolete) is specified in the available documentation; confirm current availability through an RFQ.
The module mounts on a Quantum chassis backplane and is packaged as a single unit (PCE format). It occupies 2 input words of addressing space. The isolation between groups and between group and bus is rated at 1780 Vrms for 1 minute, so plan for separate wiring ducts per channel group when routing field wiring.