Schneider Electric TWDDAI8DT Digital Input Module

The Schneider Electric Telemecanique TWDDAI8DT is an 8-point 120 VAC discrete input expansion module for Twido programmable logic controller (PLC) systems, designed to add eight 120 VAC digital inputs to a Twido baseline I/O count. It enables monitoring of field devices such as pushbuttons, selector switches, limit switches, and relays, making it suitable for packaging machinery, conveyors, material handling equipment, OEM production machines, and other factory automation setups that require expanded 120 VAC input capacity. Key specifications include eight digital inputs rated for 120 VAC, typical input current of 7.5 mA at 100 VAC, input impedance of 11 kΩ, turn-on time of 25 ms, and turn-off time of 30 ms, with wiring via a removable screw terminal block and mounting on a DIN rail. The module is compatible with Twido PLC systems and is targeted at PLC digital input expansion for reliable AC input monitoring in machine control and process automation. It is listed as discontinued, with common replacements including Schneider Electric TM2DAI8DT and OEM equivalents of TWDDAI8DT.