Allen-Bradley 1756-IA32 AC Input Module

Allen-Bradley 1756-IA32 is a ControlLogix digital AC input module that provides 32 input points for AC signals (74–132 V AC, 47–63 Hz) with a nominal 120 V AC supply, organized as two 16‑point groups. The IA32 supports 32 points of AC input with a maximum off-state voltage of 20 V, off-state current up to 2.5 mA, and on-state current ranging from 5 mA minimum to 15 mA maximum at 132 V AC, with an input impedance up to 14 kΩ at 132 V AC, 60 Hz. Transition delays are 1.5 ms nominal (up to 10 ms) for OFF→ON and 1 ms nominal (up to 8 ms) for ON→OFF, with user-selectable input filter times of 1 or 2 ms (and, in certain variants, 9 or 18 ms) to tailor response and noise rejection. Backplane power is 0.9 W, with a maximum draw of 6.1 W at 60 °C; the electronics draw about 165 mA at 5.1 V and 2 mA at 24 V. Operating conditions span 0–60 °C, with -40 to 85 °C non-operating, and 5–95% relative humidity noncondensing, plus vibration and shock specs for industrial environments. The IA32K variant is conformally coated for harsher environments.