Schneider Electric TM2DDI16DT Digital Input Module

Schneider Electric TM2DDI16DT is a 16‑channel digital input expansion module for the TM2/M238 PLC family that accepts 24 VDC sensors with either sink or source wiring. Each input is rated for 24 Vdc (20.4–28.8 Vdc) and draws about 7 mA per channel, with an input impedance of 3.4 kΩ and turn‑on/turn‑off times of around 4 ms, meeting IEC 61131‑2 Type 1 characteristics. The module provides 500 Vac isolation between input terminals and the internal bus, uses a single common line, and ships with a removable screw‑terminal block for field wiring; it also notes current draw on the internal supplies (5 V bus 40 mA when all inputs are on, 5 mA when all off; 0 mA on the 24 V bus). This discrete input expansion is designed to interface 24 VDC sensors into the TM2 I/O system for centralized control in automation applications.