Schneider Electric 140-DAO-842-10 Discrete Output Module

Schneider Electric's Modicon Quantum 140-DAO-842-10 is a 16-channel discrete AC output module for the Modicon Quantum backplane, delivering 16 triac outputs that switch standard AC loads in the 83 to 253 VAC range. Each channel is individually addressable via a single output word, with an on-state voltage drop around 1.5 V and a maximum load current of up to 4 A RMS per point (subject to grouping constraints per the module's spec). The module includes fault-detection features such as blown-fuse and loss-of-field indicators, and uses RC snubber protection for reliable switching of inductive loads. Fusing is configured with an internal 5 A fuse per group, and external 5 A per point is recommended, aligning with Schneider Electric's Quantum I/O architecture. Common applications include industrial machine control, process automation, and panel wiring where multiple AC loads—relays, contactors, heaters, and solenoids—are driven directly from a single controller. The 140-DAO-842-10 is part of the Modicon Quantum I/O family and is compatible with Quantum controllers and the X80 backplane ecosystem, supporting scalable expansion while maintaining centralized diagnostics and status indications on each channel.